Remove non-converted OFDM code from blks2impl (examples still use blks, not blks2.)

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6649 221aa14e-8319-0410-a670-987f0aec2ac5

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/Makefile.am b/gnuradio-core/src/python/gnuradio/blks2impl/Makefile.am
index 3fb23caef3f971a8d1aee3b9674535f08c03c09d..e3d83aeee97d719bc051ae32c453c78e44571da5 100644 (file)
--- a/gnuradio-core/src/python/gnuradio/blks2impl/Makefile.am
+++ b/gnuradio-core/src/python/gnuradio/blks2impl/Makefile.am
@@ -40,12 +40,6 @@ grblkspython_PYTHON =                \
        cpm.py                  \
        nbfm_rx.py              \
        nbfm_tx.py              \
-       ofdm.py                 \
-       ofdm_receiver.py        \
-       ofdm_sync_fixed.py      \
-       ofdm_sync_ml.py         \
-       ofdm_sync_pnac.py       \
-       ofdm_sync_pn.py         \
        pkt.py                  \
        psk.py                  \
        qam.py                  \

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm.py b/gnuradio-core/src/python/gnuradio/blks2impl/ofdm.py
deleted file mode 100644 (file)
index b040d8c..0000000
--- a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm.py
+++ /dev/null
@@ -1,305 +0,0 @@
-
-#
-# Copyright 2006,2007 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-# 
-
-import math
-from numpy import fft
-from gnuradio import gr, ofdm_packet_utils
-import gnuradio.gr.gr_threading as _threading
-import psk, qam
-
-from gnuradio.blksimpl.ofdm_receiver import ofdm_receiver
-
-
-# /////////////////////////////////////////////////////////////////////////////
-#                   mod/demod with packets as i/o
-# /////////////////////////////////////////////////////////////////////////////
-
-class ofdm_mod(gr.hier_block):
-    """
-    Modulates an OFDM stream. Based on the options fft_length, occupied_tones, and
-    cp_length, this block creates OFDM symbols using a specified modulation option.
-    
-    Send packets by calling send_pkt
-    """
-    def __init__(self, fg, options, msgq_limit=2, pad_for_usrp=True):
-        """
-       Hierarchical block for sending packets
-
-        Packets to be sent are enqueued by calling send_pkt.
-        The output is the complex modulated signal at baseband.
-
-       @param fg: flow graph
-       @type fg: flow graph
-        @param options: pass modulation options from higher layers (fft length, occupied tones, etc.)
-        @param msgq_limit: maximum number of messages in message queue
-        @type msgq_limit: int
-        @param pad_for_usrp: If true, packets are padded such that they end up a multiple of 128 samples
-        """
-
-        self._pad_for_usrp = pad_for_usrp
-        self._modulation = options.modulation
-        self._fft_length = options.fft_length
-        self._occupied_tones = options.occupied_tones
-        self._cp_length = options.cp_length
-
-        win = [] #[1 for i in range(self._fft_length)]
-
-        # Use freq domain to get doubled-up known symbol for correlation in time domain
-        zeros_on_left = int(math.ceil((self._fft_length - self._occupied_tones)/2.0))
-        ksfreq = known_symbols_4512_3[0:self._occupied_tones]
-        for i in range(len(ksfreq)):
-            if((zeros_on_left + i) & 1):
-                ksfreq[i] = 0
-
-        # hard-coded known symbols
-        preambles = (ksfreq,
-                     known_symbols_4512_1[0:self._occupied_tones],
-                     known_symbols_4512_2[0:self._occupied_tones])
-        
-        padded_preambles = list()
-        for pre in preambles:
-            padded = self._fft_length*[0,]
-            padded[zeros_on_left : zeros_on_left + self._occupied_tones] = pre
-            padded_preambles.append(padded)
-            
-        symbol_length = options.fft_length + options.cp_length
-        
-        mods = {"bpsk": 2, "qpsk": 4, "8psk": 8, "qam8": 8, "qam16": 16, "qam64": 64, "qam256": 256}
-        arity = mods[self._modulation]
-        
-        rot = 1
-        if self._modulation == "qpsk":
-            rot = (0.707+0.707j)
-            
-        if(self._modulation.find("psk") >= 0):
-            rotated_const = map(lambda pt: pt * rot, psk.gray_constellation[arity])
-        elif(self._modulation.find("qam") >= 0):
-            rotated_const = map(lambda pt: pt * rot, qam.constellation[arity])
-        #print rotated_const
-        self._pkt_input = gr.ofdm_mapper_bcv(rotated_const, msgq_limit,
-                                                 options.occupied_tones, options.fft_length)
-        
-        self.preambles = gr.ofdm_insert_preamble(self._fft_length, padded_preambles)
-        self.ifft = gr.fft_vcc(self._fft_length, False, win, True)
-        self.cp_adder = gr.ofdm_cyclic_prefixer(self._fft_length, symbol_length)
-        self.scale = gr.multiply_const_cc(1.0 / math.sqrt(self._fft_length))
-        
-        fg.connect((self._pkt_input, 0), (self.preambles, 0))
-        fg.connect((self._pkt_input, 1), (self.preambles, 1))
-        fg.connect(self.preambles, self.ifft, self.cp_adder, self.scale)
-        
-        if options.verbose:
-            self._print_verbage()
-
-        if options.log:
-            fg.connect(self._pkt_input, gr.file_sink(gr.sizeof_gr_complex*options.fft_length,
-                                                     "ofdm_mapper_c.dat"))
-
-        gr.hier_block.__init__(self, fg, None, self.scale)
-
-    def send_pkt(self, payload='', eof=False):
-        """
-        Send the payload.
-
-        @param payload: data to send
-        @type payload: string
-        """
-        if eof:
-            msg = gr.message(1) # tell self._pkt_input we're not sending any more packets
-        else:
-            # print "original_payload =", string_to_hex_list(payload)
-            pkt = ofdm_packet_utils.make_packet(payload, 1, 1, self._pad_for_usrp, whitening=True)
-            
-            #print "pkt =", string_to_hex_list(pkt)
-            msg = gr.message_from_string(pkt)
-        self._pkt_input.msgq().insert_tail(msg)
-
-    def add_options(normal, expert):
-        """
-        Adds OFDM-specific options to the Options Parser
-        """
-        normal.add_option("-m", "--modulation", type="string", default="bpsk",
-                          help="set modulation type (bpsk or qpsk) [default=%default]")
-        expert.add_option("", "--fft-length", type="intx", default=512,
-                          help="set the number of FFT bins [default=%default]")
-        expert.add_option("", "--occupied-tones", type="intx", default=200,
-                          help="set the number of occupied FFT bins [default=%default]")
-        expert.add_option("", "--cp-length", type="intx", default=128,
-                          help="set the number of bits in the cyclic prefix [default=%default]")
-    # Make a static method to call before instantiation
-    add_options = staticmethod(add_options)
-
-    def _print_verbage(self):
-        """
-        Prints information about the OFDM modulator
-        """
-        print "\nOFDM Modulator:"
-        print "Modulation Type: %s"    % (self._modulation)
-        print "FFT length:      %3d"   % (self._fft_length)
-        print "Occupied Tones:  %3d"   % (self._occupied_tones)
-        print "CP length:       %3d"   % (self._cp_length)
-
-
-class ofdm_demod(gr.hier_block):
-    """
-    Demodulates a received OFDM stream. Based on the options fft_length, occupied_tones, and
-    cp_length, this block performs synchronization, FFT, and demodulation of incoming OFDM
-    symbols and passes packets up the a higher layer.
-
-    The input is complex baseband.  When packets are demodulated, they are passed to the
-    app via the callback.
-    """
-
-    def __init__(self, fg, options, callback=None):
-        """
-       Hierarchical block for demodulating and deframing packets.
-
-       The input is the complex modulated signal at baseband.
-        Demodulated packets are sent to the handler.
-
-       @param fg: flow graph
-       @type fg: flow graph
-        @param options: pass modulation options from higher layers (fft length, occupied tones, etc.)
-        @param callback:  function of two args: ok, payload
-        @type callback: ok: bool; payload: string
-       """
-        self._rcvd_pktq = gr.msg_queue()          # holds packets from the PHY
-
-        self._modulation = options.modulation
-        self._fft_length = options.fft_length
-        self._occupied_tones = options.occupied_tones
-        self._cp_length = options.cp_length
-        self._snr = options.snr
-
-
-        # Use freq domain to get doubled-up known symbol for correlation in time domain
-        ksfreq = known_symbols_4512_3[0:self._occupied_tones]
-        for i in range(len(ksfreq)):
-            if(i&1):
-                ksfreq[i] = 0        
-
-        zeros_on_left = int(math.ceil((self._fft_length - self._occupied_tones)/2.0))
-        zeros_on_right = self._fft_length - self._occupied_tones - zeros_on_left
-        ks0 = zeros_on_left*[0.0,]
-        ks0.extend(ksfreq)
-        ks0.extend(zeros_on_right*[0.0,])
-        
-        ks0time = fft.ifft(ks0)
-        # ADD SCALING FACTOR
-        ks0time = ks0time.tolist()
-
-        # hard-coded known symbols
-        preambles = (ks0time,
-                     known_symbols_4512_1[0:self._occupied_tones],
-                     known_symbols_4512_2[0:self._occupied_tones])
-        
-        symbol_length = self._fft_length + self._cp_length
-        self.ofdm_recv = ofdm_receiver(fg, self._fft_length, self._cp_length,
-                                       self._occupied_tones, self._snr, preambles,
-                                       options.log)
-
-        mods = {"bpsk": 2, "qpsk": 4, "8psk": 8, "qam8": 8, "qam16": 16, "qam64": 64, "qam256": 256}
-        arity = mods[self._modulation]
-        
-        rot = 1
-        if self._modulation == "qpsk":
-            rot = (0.707+0.707j)
-
-        if(self._modulation.find("psk") >= 0):
-            rotated_const = map(lambda pt: pt * rot, psk.gray_constellation[arity])
-        elif(self._modulation.find("qam") >= 0):
-            rotated_const = map(lambda pt: pt * rot, qam.constellation[arity])
-        #print rotated_const
-        self.ofdm_demod = gr.ofdm_frame_sink(rotated_const, range(arity),
-                                             self._rcvd_pktq,
-                                             self._occupied_tones)
-        
-        fg.connect((self.ofdm_recv, 0), (self.ofdm_demod, 0))
-        fg.connect((self.ofdm_recv, 1), (self.ofdm_demod, 1))
-
-        if options.verbose:
-            self._print_verbage()
-            
-        gr.hier_block.__init__(self, fg, self.ofdm_recv, None)
-        self._watcher = _queue_watcher_thread(self._rcvd_pktq, callback)
-
-
-    def add_options(normal, expert):
-        """
-        Adds OFDM-specific options to the Options Parser
-        """
-        normal.add_option("-m", "--modulation", type="string", default="bpsk",
-                          help="set modulation type (bpsk or qpsk) [default=%default]")
-        expert.add_option("", "--fft-length", type="intx", default=512,
-                          help="set the number of FFT bins [default=%default]")
-        expert.add_option("", "--occupied-tones", type="intx", default=200,
-                          help="set the number of occupied FFT bins [default=%default]")
-        expert.add_option("", "--cp-length", type="intx", default=128,
-                          help="set the number of bits in the cyclic prefix [default=%default]")
-    # Make a static method to call before instantiation
-    add_options = staticmethod(add_options)
-
-    def _print_verbage(self):
-        """
-        Prints information about the OFDM demodulator
-        """
-        print "\nOFDM Demodulator:"
-        print "Modulation Type: %s"    % (self._modulation)
-        print "FFT length:      %3d"   % (self._fft_length)
-        print "Occupied Tones:  %3d"   % (self._occupied_tones)
-        print "CP length:       %3d"   % (self._cp_length)
-
-
-
-class _queue_watcher_thread(_threading.Thread):
-    def __init__(self, rcvd_pktq, callback):
-        _threading.Thread.__init__(self)
-        self.setDaemon(1)
-        self.rcvd_pktq = rcvd_pktq
-        self.callback = callback
-        self.keep_running = True
-        self.start()
-
-
-    def run(self):
-        while self.keep_running:
-            msg = self.rcvd_pktq.delete_head()
-            ok, payload = ofdm_packet_utils.unmake_packet(msg.to_string())
-            if self.callback:
-                self.callback(ok, payload)
-
-# Generating known symbols with:
-# i = [2*random.randint(0,1)-1 for i in range(4512)]
-
-known_symbols_200_1 = [1.0, 1.0, -1.0, 1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0]
-        
-known_symbols_200_2 = [-1.0, -1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0, -1.0, -1.0, 1.0, -1.0, 1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, 1.0, 1.0, 1.0]
-
-
-known_symbols_4512_1 = [-1, 1, 1, 1, -1, -1, 1, -1, 1, -1, 1, 1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, 1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, 1, 1, 1, 1, 1, -1, -1, -1, 1, 1, -1, -1, 1, -1, -1, 1, 1, -1, 1, -1, -1, -1, -1, 1, 1, -1, 1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, 1, -1, 1, -1, 1, 1, -1, 1, -1, 1, 1, -1, 1, 1, 1, -1, -1, -1, 1, -1, -1, -1, 1, 1, 1, -1, -1, -1, -1, 1, -1, 1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, 1, -1, 1, -1, -1, -1, -1, 1, -1, -1, -1, 1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1, -1, 1, 1, -1, 1, -1, -1, -1, 1, 1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, 1, -1, -1, 1, -1, -1, -1, 1, -1, 1, -1, 1, 1, -1, 1, 1, 1, 1, -1, 1, 1, -1, 1, -1, 1, 1, -1, -1, 1, -1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, -1, 1, -1, 1, 1, 1, 1, 1, 1, -1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, 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-known_symbols_4512_impulse = 4512*[1,]
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-1, 1, -1, 1, 1, -1, -1, -1, -1, 1, 1, -1, -1, 1, -1, 1, -1, -1, 1, -1, 1, -1, -1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, 1, 1, 1, -1, -1, -1, -1, 1, -1, 1, -1, 1, -1, -1, 1, 1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, -1, -1, -1, -1, 1, -1, -1, 1, -1, -1, -1, 1, 1, 1, 1, 1, 1, 1, -1, 1, -1, 1, -1, -1, -1, 1, 1, 1, 1, -1, -1, 1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, 1, -1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, 1, -1, 1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1, 1, -1, 1, -1, -1, -1, 1, -1, -1, 1, -1, -1, 1, 1, 1, 1, 1, 1, -1, 1, 1, -1, 1, -1, 1, -1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 1, 1, 1, -1, 1, 1, -1, -1, -1, 1, -1, 1, -1, 1, 1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, 1, -1, -1, -1, -1, -1, 1, 1, -1, 1, -1]

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_receiver.py b/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_receiver.py
deleted file mode 100644 (file)
index d16d2e2..0000000
--- a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_receiver.py
+++ /dev/null
@@ -1,64 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2006, 2007 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-# 
-
-import math
-from gnuradio import gr
-from gnuradio.blksimpl.ofdm_sync_ml import ofdm_sync_ml
-from gnuradio.blksimpl.ofdm_sync_pn import ofdm_sync_pn
-from gnuradio.blksimpl.ofdm_sync_pnac import ofdm_sync_pnac
-
-class ofdm_receiver(gr.hier_block):
-    def __init__(self, fg, fft_length, cp_length, occupied_tones, snr, ks, logging=False):
-        self.fg = fg
-
-        bw = (float(occupied_tones) / float(fft_length)) / 2.0
-        tb = bw*0.08
-        chan_coeffs = gr.firdes.low_pass (1.0,                     # gain
-                                          1.0,                     # sampling rate
-                                          bw+tb,                   # midpoint of trans. band
-                                          tb,                      # width of trans. band
-                                          gr.firdes.WIN_HAMMING)   # filter type
-        self.chan_filt = gr.fft_filter_ccc(1, chan_coeffs)
-        
-        win = [1 for i in range(fft_length)]
-
-        SYNC = "pn"
-        if SYNC == "ml":
-            self.ofdm_sync = ofdm_sync_ml(fg, fft_length, cp_length, snr, logging)
-        elif SYNC == "pn":
-            self.ofdm_sync = ofdm_sync_pn(fg, fft_length, cp_length, logging)
-        elif SYNC == "pnac":
-            self.ofdm_sync = ofdm_sync_pnac(fg, fft_length, cp_length, ks[0])
-
-        self.fft_demod = gr.fft_vcc(fft_length, True, win, True)
-        self.ofdm_corr  = gr.ofdm_correlator(occupied_tones, fft_length,
-                                             cp_length, ks[1], ks[2])
-
-        self.fg.connect(self.chan_filt, self.ofdm_sync, self.fft_demod, self.ofdm_corr)
-        
-        if logging:
-            self.fg.connect(self.chan_filt, gr.file_sink(gr.sizeof_gr_complex, "chan_filt_c.dat"))
-            self.fg.connect(self.fft_demod, gr.file_sink(gr.sizeof_gr_complex*fft_length, "fft_out_c.dat"))
-            self.fg.connect(self.ofdm_corr, gr.file_sink(gr.sizeof_gr_complex*occupied_tones, "ofdm_corr_out_c.dat"))
-            self.fg.connect((self.ofdm_corr,1), gr.file_sink(1, "found_corr_b.dat"))
-
-        gr.hier_block.__init__(self, fg, self.chan_filt, self.ofdm_corr)

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_fixed.py b/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_fixed.py
deleted file mode 100644 (file)
index b56f656..0000000
--- a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_fixed.py
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2007 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-# 
-
-import math
-from gnuradio import gr
-
-class ofdm_sync_fixed(gr.hier_block):
-    def __init__(self, fg, fft_length, cp_length, snr):
-        self.fg = fg
-
-        # Use a fixed trigger point instead of sync block
-        data = (fft_length+cp_len)*[0,]
-        data[(fft_length+cp_len)-1] = 1
-        peak_trigger = gr.vector_source_b(data, True)
-        
-        self.fg.connect(peak_trigger, (self.sampler,1))
-
-        if 1:
-            self.fg.connect(self.sampler, gr.file_sink(gr.sizeof_gr_complex*fft_length,
-                                                       "ofdm_sync_fixed-sampler_c.dat"))
-        
-        gr.hier_block.__init__(self, fg, (self.sampler,0), self.sampler)

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_ml.py b/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_ml.py
deleted file mode 100644 (file)
index d58f56c..0000000
--- a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_ml.py
+++ /dev/null
@@ -1,135 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2007 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-# 
-
-import math
-from gnuradio import gr
-
-class ofdm_sync_ml(gr.hier_block):
-    def __init__(self, fg, fft_length, cp_length, snr, logging):
-        ''' Maximum Likelihood OFDM synchronizer:
-        J. van de Beek, M. Sandell, and P. O. Borjesson, "ML Estimation
-        of Time and Frequency Offset in OFDM Systems," IEEE Trans.
-        Signal Processing, vol. 45, no. 7, pp. 1800-1805, 1997.
-        '''
-
-        self.fg = fg
-
-        # FIXME: when converting to hier_block2's, the output signature
-        # should be the output of the divider (the normalized peaks) and
-        # the angle value out of the sample and hold block
-
-        self.input = gr.add_const_cc(0)
-
-        SNR = 10.0**(snr/10.0)
-        rho = SNR / (SNR + 1.0)
-        symbol_length = fft_length + cp_length
-
-        # ML Sync
-
-        # Energy Detection from ML Sync
-
-        # Create a delay line
-        self.delay = gr.delay(gr.sizeof_gr_complex, fft_length)
-        self.fg.connect(self.input, self.delay)
-
-        # magnitude squared blocks
-        self.magsqrd1 = gr.complex_to_mag_squared()
-        self.magsqrd2 = gr.complex_to_mag_squared()
-        self.adder = gr.add_ff()
-
-        moving_sum_taps = [rho/2 for i in range(cp_length)]
-        self.moving_sum_filter = gr.fir_filter_fff(1,moving_sum_taps)
-        
-        self.fg.connect(self.input,self.magsqrd1)
-        self.fg.connect(self.delay,self.magsqrd2)
-        self.fg.connect(self.magsqrd1,(self.adder,0))
-        self.fg.connect(self.magsqrd2,(self.adder,1))
-        self.fg.connect(self.adder,self.moving_sum_filter)
-        
-
-        # Correlation from ML Sync
-        self.conjg = gr.conjugate_cc();
-        self.mixer = gr.multiply_cc();
-
-        movingsum2_taps = [1.0 for i in range(cp_length)]
-        self.movingsum2 = gr.fir_filter_ccf(1,movingsum2_taps)
-        
-        # Correlator data handler
-        self.c2mag = gr.complex_to_mag()
-        self.angle = gr.complex_to_arg()
-        self.fg.connect(self.input,(self.mixer,1))
-        self.fg.connect(self.delay,self.conjg,(self.mixer,0))
-        self.fg.connect(self.mixer,self.movingsum2,self.c2mag)
-        self.fg.connect(self.movingsum2,self.angle)
-
-        # ML Sync output arg, need to find maximum point of this
-        self.diff = gr.sub_ff()
-        self.fg.connect(self.c2mag,(self.diff,0))
-        self.fg.connect(self.moving_sum_filter,(self.diff,1))
-
-        #ML measurements input to sampler block and detect
-        nco_sensitivity = -1.0/fft_length
-        self.f2c = gr.float_to_complex()
-        self.sampler = gr.ofdm_sampler(fft_length,symbol_length)
-        self.pk_detect = gr.peak_detector_fb(0.2, 0.25, 30, 0.0005)
-        self.sample_and_hold = gr.sample_and_hold_ff()
-        self.nco = gr.frequency_modulator_fc(nco_sensitivity)
-        self.sigmix = gr.multiply_cc()
-
-        # Mix the signal with an NCO controlled by the sync loop
-        self.fg.connect(self.input, (self.sigmix,0))
-        self.fg.connect(self.nco, (self.sigmix,1))
-        self.fg.connect(self.sigmix, (self.sampler,0))
-
-        # use the sync loop values to set the sampler and the NCO
-        #     self.diff = theta
-        #     self.angle = epsilon
-                          
-        self.fg.connect(self.diff, self.pk_detect)
-
-        use_dpll = 1
-        if use_dpll:
-            self.dpll = gr.dpll_bb(float(symbol_length),0.01)
-            self.fg.connect(self.pk_detect, self.dpll)
-            self.fg.connect(self.dpll, (self.sampler,1))
-            self.fg.connect(self.dpll, (self.sample_and_hold,1))
-        else:
-            self.fg.connect(self.pk_detect, (self.sampler,1))
-            self.fg.connect(self.pk_detect, (self.sample_and_hold,1))
-            
-        self.fg.connect(self.angle, (self.sample_and_hold,0))
-        self.fg.connect(self.sample_and_hold, self.nco)
-
-        if logging:
-            self.fg.connect(self.diff, gr.file_sink(gr.sizeof_float, "ofdm_sync_ml-theta_f.dat"))
-            self.fg.connect(self.angle, gr.file_sink(gr.sizeof_float, "ofdm_sync_ml-epsilon_f.dat"))
-            self.fg.connect(self.pk_detect, gr.file_sink(gr.sizeof_char, "ofdm_sync_ml-peaks_b.dat"))
-            if use_dpll:
-                self.fg.connect(self.dpll, gr.file_sink(gr.sizeof_char, "ofdm_sync_ml-dpll_b.dat"))
-
-            self.fg.connect(self.sigmix, gr.file_sink(gr.sizeof_gr_complex, "ofdm_sync_ml-sigmix_c.dat"))
-            self.fg.connect(self.sampler, gr.file_sink(gr.sizeof_gr_complex*fft_length, "ofdm_sync_ml-sampler_c.dat"))
-            self.fg.connect(self.sample_and_hold, gr.file_sink(gr.sizeof_float, "ofdm_sync_ml-sample_and_hold_f.dat"))
-            self.fg.connect(self.nco, gr.file_sink(gr.sizeof_gr_complex, "ofdm_sync_ml-nco_c.dat"))
-            self.fg.connect(self.input, gr.file_sink(gr.sizeof_gr_complex, "ofdm_sync_ml-input_c.dat"))
-
-        gr.hier_block.__init__(self, fg, self.input, self.sampler)

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_pn.py b/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_pn.py
deleted file mode 100644 (file)
index 5642586..0000000
--- a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_pn.py
+++ /dev/null
@@ -1,135 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2007 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-# 
-
-import math
-from numpy import fft
-from gnuradio import gr
-
-class ofdm_sync_pn(gr.hier_block):
-    def __init__(self, fg, fft_length, cp_length, logging=False):
-        ''' OFDM synchronization using PN Correlation:
-        T. M. Schmidl and D. C. Cox, "Robust Frequency and Timing
-        Synchonization for OFDM," IEEE Trans. Communications, vol. 45,
-        no. 12, 1997.
-        '''
-        
-        self.fg = fg
-
-        # FIXME: when converting to hier_block2's, the output signature
-        # should be the output of the divider (the normalized peaks) and
-        # the angle value out of the sample and hold block
-            
-        self.input = gr.add_const_cc(0)
-
-        symbol_length = fft_length + cp_length
-
-        # PN Sync
-
-        # Create a delay line
-        self.delay = gr.delay(gr.sizeof_gr_complex, fft_length/2)
-
-        # Correlation from ML Sync
-        self.conjg = gr.conjugate_cc();
-        self.corr = gr.multiply_cc();
-
-        # Create a moving sum filter for the corr output
-        if 1:
-            moving_sum_taps = [1.0 for i in range(fft_length//2)]
-            self.moving_sum_filter = gr.fir_filter_ccf(1,moving_sum_taps)
-        else:
-            moving_sum_taps = [complex(1.0,0.0) for i in range(fft_length//2)]
-            self.moving_sum_filter = gr.fft_filter_ccc(1,moving_sum_taps)
-
-        # Create a moving sum filter for the input
-        self.inputmag2 = gr.complex_to_mag_squared()
-        movingsum2_taps = [1.0 for i in range(fft_length//2)]
-
-        if 1:
-            self.inputmovingsum = gr.fir_filter_fff(1,movingsum2_taps)
-        else:
-            self.inputmovingsum = gr.fft_filter_fff(1,movingsum2_taps)
-
-        self.square = gr.multiply_ff()
-        self.normalize = gr.divide_ff()
-     
-        # Get magnitude (peaks) and angle (phase/freq error)
-        self.c2mag = gr.complex_to_mag_squared()
-        self.angle = gr.complex_to_arg()
-
-        self.sample_and_hold = gr.sample_and_hold_ff()
-
-        # Mix the signal with an NCO controlled by the sync loop
-        nco_sensitivity = -2.0/fft_length
-        self.nco = gr.frequency_modulator_fc(nco_sensitivity)
-        self.sigmix = gr.multiply_cc()
-
-        #ML measurements input to sampler block and detect
-        self.sub1 = gr.add_const_ff(-1)
-        self.pk_detect = gr.peak_detector_fb(0.2, 0.25, 30, 0.0005)
-        self.regen = gr.regenerate_bb(symbol_length)
-
-        self.sampler = gr.ofdm_sampler(fft_length,symbol_length)
-        
-        self.fg.connect(self.input, self.delay)
-        self.fg.connect(self.input, (self.corr,0))
-        self.fg.connect(self.delay, self.conjg)
-        self.fg.connect(self.conjg, (self.corr,1))
-        self.fg.connect(self.corr, self.moving_sum_filter)
-        self.fg.connect(self.moving_sum_filter, self.c2mag)
-        self.fg.connect(self.moving_sum_filter, self.angle)
-        self.fg.connect(self.angle, (self.sample_and_hold,0))
-        self.fg.connect(self.sample_and_hold, self.nco)
-
-        self.fg.connect(self.input, (self.sigmix,0))
-        self.fg.connect(self.nco, (self.sigmix,1))
-        self.fg.connect(self.sigmix, (self.sampler,0))
-
-        self.fg.connect(self.input, self.inputmag2, self.inputmovingsum)
-        self.fg.connect(self.inputmovingsum, (self.square,0))
-        self.fg.connect(self.inputmovingsum, (self.square,1))
-        self.fg.connect(self.square, (self.normalize,1))
-        self.fg.connect(self.c2mag, (self.normalize,0))
-
-        # Create a moving sum filter for the corr output
-        matched_filter_taps = [1.0/cp_length for i in range(cp_length)]
-        self.matched_filter = gr.fir_filter_fff(1,matched_filter_taps)
-        self.fg.connect(self.normalize, self.matched_filter)
-        
-        self.fg.connect(self.matched_filter, self.sub1, self.pk_detect)
-        self.fg.connect(self.pk_detect, self.regen)
-        self.fg.connect(self.regen, (self.sampler,1))
-        self.fg.connect(self.pk_detect, (self.sample_and_hold,1))
-
-
-        if logging:
-            self.fg.connect(self.matched_filter, gr.file_sink(gr.sizeof_float, "ofdm_sync_pn-mf_f.dat"))
-            self.fg.connect(self.normalize, gr.file_sink(gr.sizeof_float, "ofdm_sync_pn-theta_f.dat"))
-            self.fg.connect(self.angle, gr.file_sink(gr.sizeof_float, "ofdm_sync_pn-epsilon_f.dat"))
-            self.fg.connect(self.pk_detect, gr.file_sink(gr.sizeof_char, "ofdm_sync_pn-peaks_b.dat"))
-            self.fg.connect(self.regen, gr.file_sink(gr.sizeof_char, "ofdm_sync_pn-regen_b.dat"))
-            self.fg.connect(self.sigmix, gr.file_sink(gr.sizeof_gr_complex, "ofdm_sync_pn-sigmix_c.dat"))
-            self.fg.connect(self.sampler, gr.file_sink(gr.sizeof_gr_complex*fft_length, "ofdm_sync_pn-sampler_c.dat"))
-            self.fg.connect(self.sample_and_hold, gr.file_sink(gr.sizeof_float, "ofdm_sync_pn-sample_and_hold_f.dat"))
-            self.fg.connect(self.nco, gr.file_sink(gr.sizeof_gr_complex, "ofdm_sync_pn-nco_c.dat"))
-            self.fg.connect(self.input, gr.file_sink(gr.sizeof_gr_complex, "ofdm_sync_pn-input_c.dat"))
-
-        gr.hier_block.__init__(self, fg, self.input, self.sampler)

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_pnac.py b/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_pnac.py
deleted file mode 100644 (file)
index e3774e3..0000000
--- a/gnuradio-core/src/python/gnuradio/blks2impl/ofdm_sync_pnac.py
+++ /dev/null
@@ -1,126 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2007 Free Software Foundation, Inc.
-# 
-# This file is part of GNU Radio
-# 
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-# 
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-# 
-
-import math
-from numpy import fft
-from gnuradio import gr
-
-class ofdm_sync_pnac(gr.hier_block):
-    def __init__(self, fg, fft_length, cp_length, ks):
-        self.fg = fg
-
-        # FIXME: when converting to hier_block2's, the output signature
-        # should be the output of the divider (the normalized peaks) and
-        # the angle value out of the sample and hold block
-            
-        self.input = gr.add_const_cc(0)
-
-        symbol_length = fft_length + cp_length
-
-        # PN Sync
-
-        # autocorrelate with the known symbol
-        ks = ks[0:fft_length//2]
-        ks.reverse()
-        self.crosscorr_filter = gr.fir_filter_ccc(1, ks)
-        self.fg.connect(self.crosscorr_filter, gr.file_sink(gr.sizeof_gr_complex, "crosscorr.dat"))
-        
-        # Create a delay line
-        self.delay = gr.delay(gr.sizeof_gr_complex, fft_length/2)
-
-        # Correlation from ML Sync
-        self.conjg = gr.conjugate_cc();
-        self.corr = gr.multiply_cc();
-
-        # Create a moving sum filter for the corr output
-        moving_sum_taps = [1.0 for i in range(fft_length//2)]
-        self.moving_sum_filter = gr.fir_filter_ccf(1,moving_sum_taps)
-
-        # Create a moving sum filter for the input
-        self.inputmag2 = gr.complex_to_mag_squared()
-        movingsum2_taps = [1.0 for i in range(fft_length/2)]
-        self.inputmovingsum = gr.fir_filter_fff(1,movingsum2_taps)
-        self.square = gr.multiply_ff()
-        self.normalize = gr.divide_ff()
-     
-        # Get magnitude (peaks) and angle (phase/freq error)
-        self.c2mag = gr.complex_to_mag_squared()
-        self.angle = gr.complex_to_arg()
-
-        self.sample_and_hold = gr.sample_and_hold_ff()
-
-        # Mix the signal with an NCO controlled by the sync loop
-        nco_sensitivity = -1.0/fft_length
-        self.nco = gr.frequency_modulator_fc(nco_sensitivity)
-        self.sigmix = gr.multiply_cc()
-
-        #ML measurements input to sampler block and detect
-        self.sub1 = gr.add_const_ff(-1)
-        self.pk_detect = gr.peak_detector_fb(0.2, 0.25, 30, 0.0005)
-
-        self.sampler = gr.ofdm_sampler(fft_length,symbol_length)
-        
-        self.fg.connect(self.input, self.crosscorr_filter)
-        self.fg.connect(self.crosscorr_filter, self.delay)
-        self.fg.connect(self.crosscorr_filter, (self.corr,0))
-        self.fg.connect(self.delay, self.conjg)
-        self.fg.connect(self.conjg, (self.corr,1))
-        self.fg.connect(self.corr, self.moving_sum_filter)
-        self.fg.connect(self.moving_sum_filter, self.c2mag)
-        self.fg.connect(self.moving_sum_filter, self.angle)
-        self.fg.connect(self.angle, (self.sample_and_hold,0))
-        self.fg.connect(self.sample_and_hold, self.nco)
-
-        self.fg.connect(self.input, (self.sigmix,0))
-        self.fg.connect(self.nco, (self.sigmix,1))
-        self.fg.connect(self.sigmix, (self.sampler,0))
-
-        self.fg.connect(self.input, self.inputmag2, self.inputmovingsum)
-        self.fg.connect(self.inputmovingsum, (self.square,0))
-        self.fg.connect(self.inputmovingsum, (self.square,1))
-        self.fg.connect(self.square, (self.normalize,1))
-        self.fg.connect(self.c2mag, (self.normalize,0))
-        self.fg.connect(self.normalize, self.sub1, self.pk_detect)
-
-        self.fg.connect(self.pk_detect, (self.sampler,1))
-        self.fg.connect(self.pk_detect, (self.sample_and_hold,1))
-            
-
-        if 1:
-            self.fg.connect(self.normalize, gr.file_sink(gr.sizeof_float,
-                                                         "ofdm_sync_pnac-theta_f.dat"))
-            self.fg.connect(self.angle, gr.file_sink(gr.sizeof_float,
-                                                     "ofdm_sync_pnac-epsilon_f.dat"))
-            self.fg.connect(self.pk_detect, gr.file_sink(gr.sizeof_char,
-                                                         "ofdm_sync_pnac-peaks_b.dat"))
-            self.fg.connect(self.sigmix, gr.file_sink(gr.sizeof_gr_complex,
-                                                      "ofdm_sync_pnac-sigmix_c.dat"))
-            self.fg.connect(self.sampler, gr.file_sink(gr.sizeof_gr_complex*fft_length,
-                                                       "ofdm_sync_pnac-sampler_c.dat"))
-            self.fg.connect(self.sample_and_hold, gr.file_sink(gr.sizeof_float,
-                                                               "ofdm_sync_pnac-sample_and_hold_f.dat"))
-            self.fg.connect(self.nco, gr.file_sink(gr.sizeof_gr_complex,
-                                                   "ofdm_sync_pnac-nco_c.dat"))
-            self.fg.connect(self.input, gr.file_sink(gr.sizeof_gr_complex,
-                                                     "ofdm_sync_pnac-input_c.dat"))
-
-        gr.hier_block.__init__(self, fg, self.input, self.sampler)