gr_ofdm_cyclic_prefixer.cc \
gr_ofdm_demapper_vcb.cc \
gr_ofdm_mapper_bcv.cc \
- gr_ofdm_bpsk_demapper.cc \
- gr_ofdm_bpsk_mapper.cc \
- gr_ofdm_qpsk_mapper.cc \
- gr_ofdm_qam_mapper.cc \
gr_ofdm_frame_sink.cc \
gr_ofdm_insert_preamble.cc \
gr_ofdm_sampler.cc \
gr_ofdm_cyclic_prefixer.h \
gr_ofdm_demapper_vcb.h \
gr_ofdm_mapper_bcv.h \
- gr_ofdm_bpsk_mapper.h \
- gr_ofdm_qpsk_mapper.h \
- gr_ofdm_qam_mapper.h \
- gr_ofdm_bpsk_demapper.h \
gr_ofdm_frame_sink.h \
gr_ofdm_insert_preamble.h \
gr_ofdm_sampler.h \
gr_ofdm_cyclic_prefixer.i \
gr_ofdm_demapper_vcb.i \
gr_ofdm_mapper_bcv.i \
- gr_ofdm_bpsk_demapper.i \
- gr_ofdm_bpsk_mapper.i \
- gr_ofdm_qpsk_mapper.i \
- gr_ofdm_qam_mapper.i \
gr_ofdm_frame_sink.i \
gr_ofdm_insert_preamble.i \
gr_ofdm_sampler.i \
#include <gr_probe_signal_f.h>
#include <gr_ofdm_frame_acquisition.h>
#include <gr_ofdm_cyclic_prefixer.h>
-#include <gr_ofdm_bpsk_demapper.h>
#include <gr_ofdm_mapper_bcv.h>
-#include <gr_ofdm_bpsk_mapper.h>
-#include <gr_ofdm_qpsk_mapper.h>
-#include <gr_ofdm_qam_mapper.h>
#include <gr_ofdm_frame_sink.h>
#include <gr_ofdm_insert_preamble.h>
#include <gr_ofdm_sampler.h>
%include "gr_probe_signal_f.i"
%include "gr_ofdm_frame_acquisition.i"
%include "gr_ofdm_cyclic_prefixer.i"
-%include "gr_ofdm_bpsk_demapper.i"
%include "gr_ofdm_mapper_bcv.i"
-%include "gr_ofdm_bpsk_mapper.i"
-%include "gr_ofdm_qpsk_mapper.i"
-%include "gr_ofdm_qam_mapper.i"
%include "gr_ofdm_frame_sink.i"
%include "gr_ofdm_insert_preamble.i"
%include "gr_ofdm_sampler.i"
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gr_ofdm_bpsk_mapper.h>
-#include <gr_io_signature.h>
-#include <stdexcept>
-#include <string.h>
-
-gr_ofdm_bpsk_mapper_sptr
-gr_make_ofdm_bpsk_mapper (unsigned int msgq_limit,
- unsigned int occupied_carriers, unsigned int fft_length)
-{
- return gr_ofdm_bpsk_mapper_sptr (new gr_ofdm_bpsk_mapper (msgq_limit, occupied_carriers, fft_length));
-}
-
-// Consumes 1 packet and produces as many OFDM symbols of fft_length to hold the full packet
-gr_ofdm_bpsk_mapper::gr_ofdm_bpsk_mapper (unsigned int msgq_limit,
- unsigned int occupied_carriers, unsigned int fft_length)
- : gr_sync_block ("ofdm_bpsk_mapper",
- gr_make_io_signature (0, 0, 0),
- gr_make_io_signature2 (1, 2, sizeof(gr_complex)*fft_length, sizeof(char))),
- d_msgq(gr_make_msg_queue(msgq_limit)), d_msg_offset(0), d_eof(false),
- d_occupied_carriers(occupied_carriers),
- d_fft_length(fft_length),
- d_bit_offset(0),
- d_pending_flag(0)
-{
- if (!(d_occupied_carriers <= d_fft_length))
- throw std::invalid_argument("gr_ofdm_bpsk_mapper: occupied carriers must be <= fft_length");
-}
-
-gr_ofdm_bpsk_mapper::~gr_ofdm_bpsk_mapper(void)
-{
-}
-
-static float
-randombit()
-{
- int r = rand()&1;
- return (float)(1 - 2*r);
-}
-
-int
-gr_ofdm_bpsk_mapper::work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
-{
- gr_complex *out = (gr_complex *)output_items[0];
-
- unsigned int i=0;
- unsigned int unoccupied_carriers = d_fft_length - d_occupied_carriers;
- unsigned int zeros_on_left = (unsigned)ceil(unoccupied_carriers/2.0);
-
- //printf("OFDM BPSK Mapper: ninput_items: %d noutput_items: %d\n", ninput_items[0], noutput_items);
-
- if(d_eof) {
- return -1;
- }
-
- if(!d_msg) {
- d_msg = d_msgq->delete_head(); // block, waiting for a message
- d_msg_offset = 0;
- d_bit_offset = 0;
- d_pending_flag = 1; // new packet, write start of packet flag
-
- if((d_msg->length() == 0) && (d_msg->type() == 1)) {
- d_msg.reset();
- return -1; // We're done; no more messages coming.
- }
- }
-
- char *out_flag = 0;
- if(output_items.size() == 2)
- out_flag = (char *) output_items[1];
-
-
- // Build a single symbol:
-
-
- // Initialize all bins to 0 to set unused carriers
- memset(out, 0, d_fft_length*sizeof(gr_complex));
-
- i = 0;
- while((d_msg_offset < d_msg->length()) && (i < d_occupied_carriers)) {
- unsigned char bit = (d_msg->msg()[d_msg_offset] >> (d_bit_offset)) & 0x01;
- out[i + zeros_on_left] = gr_complex(1-2*(bit));
- i++;
- d_bit_offset++;
- if(d_bit_offset == 8) {
- d_bit_offset = 0;
- d_msg_offset++;
- }
- }
-
- // Ran out of data to put in symbol
- if (d_msg_offset == d_msg->length()) {
- while(i < d_occupied_carriers) { // finish filling out the symbol
- out[i + zeros_on_left] = gr_complex(randombit(),0);
- i++;
- }
-
- if (d_msg->type() == 1) // type == 1 sets EOF
- d_eof = true;
- d_msg.reset(); // finished packet, free message
- assert(d_bit_offset == 0);
- }
-
- if (out_flag)
- out_flag[0] = d_pending_flag;
- d_pending_flag = 0;
-
- return 1; // produced symbol
-}
-
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-#ifndef INCLUDED_GR_OFDM_BPSK_MAPPER_H
-#define INCLUDED_GR_OFDM_BPSK_MAPPER_H
-
-
-#include <gr_sync_block.h>
-#include <gr_message.h>
-#include <gr_msg_queue.h>
-
-class gr_ofdm_bpsk_mapper;
-typedef boost::shared_ptr<gr_ofdm_bpsk_mapper> gr_ofdm_bpsk_mapper_sptr;
-
-gr_ofdm_bpsk_mapper_sptr
-gr_make_ofdm_bpsk_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length);
-
-/*!
- * \brief take a message in and map to a vector of complex
- * constellation points suitable for IFFT input to be used in an ofdm
- * modulator. Simple BPSK version.
- * \ingroup modulation
- */
-
-class gr_ofdm_bpsk_mapper : public gr_sync_block
-{
- friend gr_ofdm_bpsk_mapper_sptr
- gr_make_ofdm_bpsk_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length);
- protected:
- gr_ofdm_bpsk_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length);
-
- private:
- gr_msg_queue_sptr d_msgq;
- gr_message_sptr d_msg;
- unsigned d_msg_offset;
- bool d_eof;
-
- unsigned int d_occupied_carriers;
- unsigned int d_fft_length;
- unsigned int d_bit_offset;
- int d_pending_flag;
-
- public:
- ~gr_ofdm_bpsk_mapper(void);
-
- gr_msg_queue_sptr msgq() const { return d_msgq; }
-
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-
-};
-
-
-#endif
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-GR_SWIG_BLOCK_MAGIC(gr,ofdm_bpsk_mapper);
-
-gr_ofdm_bpsk_mapper_sptr
-gr_make_ofdm_bpsk_mapper (unsigned int msgq_limit,
- unsigned int bits_per_symbol,
- unsigned int fft_length);
-
-
-class gr_ofdm_bpsk_mapper : public gr_sync_block
-{
- protected:
- gr_ofdm_bpsk_mapper (unsigned int msgq_limit,
- unsigned int bits_per_symbol,
- unsigned int fft_length);
-
- public:
- gr_msg_queue_sptr msgq();
-
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
char c[2] = {0,0};
diff_left = (int)ceil((float)diff/2.0f); // number of carriers to put on the left side
- c[0] = abc[((1 << diff_left) - 1)]; // convert to bits and move to ASCI integer
+ c[0] = abc[(1 << diff_left) - 1]; // convert to bits and move to ASCI integer
carriers.insert(0, c);
diff_right = diff - diff_left; // number of carriers to put on the right side
- c[0] = abc[(0xF^(1 << diff_left) - 1)]; // convert to bits and move to ASCI integer
+ c[0] = abc[0xF^((1 << diff_right) - 1)]; // convert to bits and move to ASCI integer
carriers.insert(carriers.length(), c);
}
char c[2] = {0,0};
diff_left = (int)ceil((float)diff/2.0f); // number of carriers to put on the left side
- c[0] = abc[((1 << diff_left) - 1)]; // convert to bits and move to ASCI integer
+ c[0] = abc[(1 << diff_left) - 1]; // convert to bits and move to ASCI integer
carriers.insert(0, c);
diff_right = diff - diff_left; // number of carriers to put on the right side
- c[0] = abc[(0xF^(1 << diff_left) - 1)]; // convert to bits and move to ASCI integer
+ c[0] = abc[0xF^((1 << diff_right) - 1)]; // convert to bits and move to ASCI integer
carriers.insert(carriers.length(), c);
}
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gr_ofdm_qam_mapper.h>
-#include <gr_io_signature.h>
-#include <stdexcept>
-#include <string.h>
-
-gr_ofdm_qam_mapper_sptr
-gr_make_ofdm_qam_mapper (unsigned int msgq_limit,
- unsigned int occupied_carriers, unsigned int fft_length,
- int m)
-{
- return gr_ofdm_qam_mapper_sptr (new gr_ofdm_qam_mapper (msgq_limit, occupied_carriers, fft_length, m));
-}
-
-// Consumes 1 packet and produces as many OFDM symbols of fft_length to hold the full packet
-gr_ofdm_qam_mapper::gr_ofdm_qam_mapper (unsigned int msgq_limit,
- unsigned int occupied_carriers, unsigned int fft_length,
- int m)
- : gr_sync_block ("ofdm_qam_mapper",
- gr_make_io_signature (0, 0, 0),
- gr_make_io_signature2 (1, 2, sizeof(gr_complex)*fft_length, sizeof(char))),
- d_msgq(gr_make_msg_queue(msgq_limit)), d_msg_offset(0), d_eof(false),
- d_occupied_carriers(occupied_carriers),
- d_fft_length(fft_length),
- d_bit_offset(0),
- d_pending_flag(0),
- d_mod_order(m)
-{
- if (!(d_occupied_carriers <= d_fft_length))
- throw std::invalid_argument("gr_ofdm_qam_mapper: occupied carriers must be <= fft_length");
-
- bool ok = false;
- if(m == 2) {
- ok = true;
- }
- if(m == 4) {
- ok = true;
- }
- if(m == 16) {
- ok = true;
- }
- if(m == 64) {
- ok = true;
- }
- if(m == 256) {
- ok = true;
- }
-
- if(!ok)
- throw std::invalid_argument("Order M must be [2, 4, 16, 64, 256]");
-
- make_constellation();
-}
-
-gr_ofdm_qam_mapper::~gr_ofdm_qam_mapper(void)
-{
-}
-
-void gr_ofdm_qam_mapper::make_constellation()
-{
- int i = 0, j = 0, ii = 0, jj = 0;
- // number of bits/symbol (log2(M))
- int k = (int)(log10(d_mod_order) / log10(2.0));
-
- int a, b;
- float re, im;
- float coeff = 1;
- std::vector<int> bits_i, bits_q;
-
- int rr = 0;
- int ss = 0;
- int ll = bits_i.size();
-
- for(i=0; i < d_mod_order; i++) {
- a = (i & (0x01 << (k-1))) >> (k-1);
- b = (i & (0x01 << (k-2))) >> (k-2);
- for(j=2; j < k; j+=2) {
- bits_i.push_back( (i & (0x01 << (k-j-1))) >> (k-j-1));
- bits_q.push_back( (i & (0x01 << (k-(j+1)-1))) >> (k-(j+1)-1));
- }
-
- ss = 0;
- ll = bits_i.size();
- for(ii = 0; ii < ll; ii++) {
- rr = 0;
- for(jj = 0; jj < (ll-ii); jj++) {
- rr = abs(bits_i[jj] - rr);
- }
- ss += rr * pow(2.0, ii+1.0);
- }
- re = (2.0*a-1.0)*(ss+1.0);
-
- ss = 0;
- ll = bits_q.size();
- for(ii = 0; ii < ll; ii++) {
- rr = 0;
- for(jj = 0; jj < (ll-ii); jj++) {
- rr = abs(bits_q[jj] - rr);
- }
- ss += rr*pow(2.0, ii+1.0);
- }
- im = (2.0*b-1.0)*(ss+1.0);
-
- a = std::max(re, im);
- if(a > coeff) {
- coeff = a;
- }
- d_constellation_map.push_back(gr_complex(re, im));
- }
-
- d_constellation_map[0] = gr_complex(-3, -3);
- d_constellation_map[1] = gr_complex(-3, -1);
- d_constellation_map[2] = gr_complex(-3, 1);
- d_constellation_map[3] = gr_complex(-3, 3);
- d_constellation_map[4] = gr_complex(-1, -3);
- d_constellation_map[5] = gr_complex(-1, -1);
- d_constellation_map[6] = gr_complex(-1, 1);
- d_constellation_map[7] = gr_complex(-1, 3);
- d_constellation_map[8] = gr_complex(1, -3);
- d_constellation_map[9] = gr_complex(1, -1);
- d_constellation_map[10] = gr_complex(1, 1);
- d_constellation_map[11] = gr_complex(1, 3);
- d_constellation_map[12] = gr_complex(3, -3);
- d_constellation_map[13] = gr_complex(3, -1);
- d_constellation_map[14] = gr_complex(3, 1);
- d_constellation_map[15] = gr_complex(3, 3);
-
- coeff = sqrt(31.0)/2.0;
- for(i = 0; i < static_cast<int>(d_constellation_map.size()); i++) {
- d_constellation_map[i] /= coeff;
- printf("const[%d]: %f + j%f\n", i, d_constellation_map[i].real(), d_constellation_map[i].imag());
- }
-}
-
-#if 0
-static float
-randombit()
-{
- int r = rand()&1;
- return (float)(-1 + 2*r);
-}
-#endif
-
-int
-gr_ofdm_qam_mapper::work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
-{
- gr_complex *out = (gr_complex *)output_items[0];
-
- unsigned int i=0;
- unsigned int unoccupied_carriers = d_fft_length - d_occupied_carriers;
- unsigned int zeros_on_left = (unsigned)ceil(unoccupied_carriers/2.0);
-
- //printf("OFDM QAM Mapper: ninput_items: %d noutput_items: %d\n", ninput_items[0], noutput_items);
-
- if(d_eof) {
- return -1;
- }
-
- if(!d_msg) {
- d_msg = d_msgq->delete_head(); // block, waiting for a message
- d_msg_offset = 0;
- d_bit_offset = 0;
- d_pending_flag = 1; // new packet, write start of packet flag
-
- if((d_msg->length() == 0) && (d_msg->type() == 1)) {
- d_msg.reset();
- return -1; // We're done; no more messages coming.
- }
- }
-
- char *out_flag = 0;
- if(output_items.size() == 2)
- out_flag = (char *) output_items[1];
-
-
- // Build a single symbol:
-
-
- // Initialize all bins to 0 to set unused carriers
- memset(out, 0, d_fft_length*sizeof(gr_complex));
-
- i = 0;
- while((d_msg_offset < d_msg->length()) && (i < d_occupied_carriers)) {
- unsigned char bit0 = (d_msg->msg()[d_msg_offset] >> (d_bit_offset)) & 0x01;
- d_bit_offset++;
-
- unsigned char bit1 = (d_msg->msg()[d_msg_offset] >> (d_bit_offset)) & 0x01;
- d_bit_offset++;
-
- unsigned char bit2 = (d_msg->msg()[d_msg_offset] >> (d_bit_offset)) & 0x01;
- d_bit_offset++;
-
- unsigned char bit3 = (d_msg->msg()[d_msg_offset] >> (d_bit_offset)) & 0x01;
- d_bit_offset++;
-
- unsigned char bit = (bit0 << 3) | (bit1 << 2) | (bit2 << 1) | (bit3 << 0);
-
- out[i + zeros_on_left] = d_constellation_map[bit];
- i++;
- if(d_bit_offset == 8) {
- d_bit_offset = 0;
- d_msg_offset++;
- }
- }
-
- // Ran out of data to put in symbol
- if (d_msg_offset == d_msg->length()) {
- while(i < d_occupied_carriers) { // finish filling out the symbol
- out[i + zeros_on_left] = d_constellation_map[rand() & 0x0F];
- i++;
- }
-
- if (d_msg->type() == 1) // type == 1 sets EOF
- d_eof = true;
- d_msg.reset(); // finished packet, free message
- assert(d_bit_offset == 0);
- }
-
- if (out_flag)
- out_flag[0] = d_pending_flag;
- d_pending_flag = 0;
-
- return 1; // produced symbol
-}
-
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-#ifndef INCLUDED_GR_OFDM_QAM_MAPPER_H
-#define INCLUDED_GR_OFDM_QAM_MAPPER_H
-
-
-#include <gr_sync_block.h>
-#include <gr_message.h>
-#include <gr_msg_queue.h>
-
-class gr_ofdm_qam_mapper;
-typedef boost::shared_ptr<gr_ofdm_qam_mapper> gr_ofdm_qam_mapper_sptr;
-
-gr_ofdm_qam_mapper_sptr
-gr_make_ofdm_qam_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length,
- int m=4);
-
-/*!
- * \brief take a message in and map to a vector of complex
- * constellation points suitable for IFFT input to be used in an ofdm
- * modulator. Simple QAM version.
- * \ingroup modulation
- */
-
-class gr_ofdm_qam_mapper : public gr_sync_block
-{
- friend gr_ofdm_qam_mapper_sptr
- gr_make_ofdm_qam_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length,
- int m);
- protected:
- gr_ofdm_qam_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length,
- int m);
-
- private:
- gr_msg_queue_sptr d_msgq;
- gr_message_sptr d_msg;
- unsigned d_msg_offset;
- bool d_eof;
-
- unsigned int d_occupied_carriers;
- unsigned int d_fft_length;
- unsigned int d_bit_offset;
- int d_pending_flag;
-
- int d_mod_order;
- std::vector<gr_complex> d_constellation_map;
-
- void make_constellation();
-
- public:
- ~gr_ofdm_qam_mapper(void);
-
- gr_msg_queue_sptr msgq() const { return d_msgq; }
-
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-
-};
-
-
-#endif
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-GR_SWIG_BLOCK_MAGIC(gr,ofdm_qam_mapper);
-
-gr_ofdm_qam_mapper_sptr
-gr_make_ofdm_qam_mapper (unsigned int msgq_limit,
- unsigned int bits_per_symbol,
- unsigned int fft_length,
- int m=16);
-
-
-class gr_ofdm_qam_mapper : public gr_sync_block
-{
- protected:
- gr_ofdm_qam_mapper (unsigned int msgq_limit,
- unsigned int bits_per_symbol,
- unsigned int fft_length,
- int m);
-
- public:
- gr_msg_queue_sptr msgq();
-
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gr_ofdm_qpsk_mapper.h>
-#include <gr_io_signature.h>
-#include <stdexcept>
-#include <string.h>
-
-gr_ofdm_qpsk_mapper_sptr
-gr_make_ofdm_qpsk_mapper (unsigned int msgq_limit,
- unsigned int occupied_carriers, unsigned int fft_length)
-{
- return gr_ofdm_qpsk_mapper_sptr (new gr_ofdm_qpsk_mapper (msgq_limit, occupied_carriers, fft_length));
-}
-
-// Consumes 1 packet and produces as many OFDM symbols of fft_length to hold the full packet
-gr_ofdm_qpsk_mapper::gr_ofdm_qpsk_mapper (unsigned int msgq_limit,
- unsigned int occupied_carriers, unsigned int fft_length)
- : gr_sync_block ("ofdm_qpsk_mapper",
- gr_make_io_signature (0, 0, 0),
- gr_make_io_signature2 (1, 2, sizeof(gr_complex)*fft_length, sizeof(char))),
- d_msgq(gr_make_msg_queue(msgq_limit)), d_msg_offset(0), d_eof(false),
- d_occupied_carriers(occupied_carriers),
- d_fft_length(fft_length),
- d_bit_offset(0),
- d_pending_flag(0)
-{
- if (!(d_occupied_carriers <= d_fft_length))
- throw std::invalid_argument("gr_ofdm_qpsk_mapper: occupied carriers must be <= fft_length");
-}
-
-gr_ofdm_qpsk_mapper::~gr_ofdm_qpsk_mapper(void)
-{
-}
-
-static gr_complex
-randombit()
-{
- int r1 = rand()&1;
- int r2 = rand()&1;
- return gr_complex((0.707)*(1 - 2*r1),(0.707)*(1 - 2*r2));
-}
-
-int
-gr_ofdm_qpsk_mapper::work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
-{
- gr_complex *out = (gr_complex *)output_items[0];
-
- unsigned int i=0;
- unsigned int unoccupied_carriers = d_fft_length - d_occupied_carriers;
- unsigned int zeros_on_left = (unsigned)ceil(unoccupied_carriers/2.0);
-
- //printf("OFDM QPSK Mapper: ninput_items: %d noutput_items: %d\n", ninput_items[0], noutput_items);
-
- if(d_eof) {
- return -1;
- }
-
- if(!d_msg) {
- d_msg = d_msgq->delete_head(); // block, waiting for a message
- d_msg_offset = 0;
- d_bit_offset = 0;
- d_pending_flag = 1; // new packet, write start of packet flag
-
- if((d_msg->length() == 0) && (d_msg->type() == 1)) {
- d_msg.reset();
- return -1; // We're done; no more messages coming.
- }
- }
-
- char *out_flag = 0;
- if(output_items.size() == 2)
- out_flag = (char *) output_items[1];
-
-
- // Build a single symbol:
-
-
- // Initialize all bins to 0 to set unused carriers
- memset(out, 0, d_fft_length*sizeof(gr_complex));
-
- i = 0;
- while((d_msg_offset < d_msg->length()) && (i < d_occupied_carriers)) {
- unsigned char bit0 = (d_msg->msg()[d_msg_offset] >> (d_bit_offset)) & 0x01;
- d_bit_offset++;
-
- unsigned char bit1 = (d_msg->msg()[d_msg_offset] >> (d_bit_offset)) & 0x01;
- d_bit_offset++;
-
- out[i + zeros_on_left] = gr_complex((0.707)*(1-2*(bit0)), (0.707)*(1-2*(bit1)) );
- i++;
- if(d_bit_offset == 8) {
- d_bit_offset = 0;
- d_msg_offset++;
- }
- }
-
- // Ran out of data to put in symbol
- if (d_msg_offset == d_msg->length()) {
- while(i < d_occupied_carriers) { // finish filling out the symbol
- out[i + zeros_on_left] = randombit();
- i++;
- }
-
- if (d_msg->type() == 1) // type == 1 sets EOF
- d_eof = true;
- d_msg.reset(); // finished packet, free message
- assert(d_bit_offset == 0);
- }
-
- if (out_flag)
- out_flag[0] = d_pending_flag;
- d_pending_flag = 0;
-
- return 1; // produced symbol
-}
-
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-#ifndef INCLUDED_GR_OFDM_QPSK_MAPPER_H
-#define INCLUDED_GR_OFDM_QPSK_MAPPER_H
-
-
-#include <gr_sync_block.h>
-#include <gr_message.h>
-#include <gr_msg_queue.h>
-
-class gr_ofdm_qpsk_mapper;
-typedef boost::shared_ptr<gr_ofdm_qpsk_mapper> gr_ofdm_qpsk_mapper_sptr;
-
-gr_ofdm_qpsk_mapper_sptr
-gr_make_ofdm_qpsk_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length);
-
-/*!
- * \brief take a message in and map to a vector of complex
- * constellation points suitable for IFFT input to be used in an ofdm
- * modulator. Simple QPSK version.
- * \ingroup modulation
- */
-
-class gr_ofdm_qpsk_mapper : public gr_sync_block
-{
- friend gr_ofdm_qpsk_mapper_sptr
- gr_make_ofdm_qpsk_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length);
- protected:
- gr_ofdm_qpsk_mapper (unsigned msgq_limit,
- unsigned occupied_carriers, unsigned int fft_length);
-
- private:
- gr_msg_queue_sptr d_msgq;
- gr_message_sptr d_msg;
- unsigned d_msg_offset;
- bool d_eof;
-
- unsigned int d_occupied_carriers;
- unsigned int d_fft_length;
- unsigned int d_bit_offset;
- int d_pending_flag;
-
- public:
- ~gr_ofdm_qpsk_mapper(void);
-
- gr_msg_queue_sptr msgq() const { return d_msgq; }
-
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-
-};
-
-
-#endif
+++ /dev/null
-/* -*- c++ -*- */
-/*
- * 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.
- */
-
-GR_SWIG_BLOCK_MAGIC(gr,ofdm_qpsk_mapper);
-
-gr_ofdm_qpsk_mapper_sptr
-gr_make_ofdm_qpsk_mapper (unsigned int msgq_limit,
- unsigned int bits_per_symbol,
- unsigned int fft_length);
-
-
-class gr_ofdm_qpsk_mapper : public gr_sync_block
-{
- protected:
- gr_ofdm_qpsk_mapper (unsigned int msgq_limit,
- unsigned int bits_per_symbol,
- unsigned int fft_length);
-
- public:
- gr_msg_queue_sptr msgq();
-
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
projects / debian / gnuradio / commitdiff