3 * Copyright 2005 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 #ifndef INCLUDED_GR_LMS_DFE_CC_H
24 #define INCLUDED_GR_LMS_DFE_CC_H
26 #include <gr_sync_block.h>
29 typedef boost::shared_ptr<gr_lms_dfe_cc> gr_lms_dfe_cc_sptr;
31 gr_lms_dfe_cc_sptr gr_make_lms_dfe_cc (float lambda_ff, float lambda_fb,
32 unsigned int num_fftaps, unsigned int num_fbtaps);
35 * \brief Least-Mean-Square Decision Feedback Equalizer (complex in/out)
38 class gr_lms_dfe_cc : public gr_sync_block
40 friend gr_lms_dfe_cc_sptr gr_make_lms_dfe_cc (float lambda_ff, float lambda_fb,
41 unsigned int num_fftaps, unsigned int num_fbtaps);
45 std::vector<gr_complex> d_ff_delayline;
46 std::vector<gr_complex> d_fb_delayline;
47 std::vector<gr_complex> d_ff_taps;
48 std::vector<gr_complex> d_fb_taps;
49 unsigned int d_ff_index;
50 unsigned int d_fb_index;
52 gr_lms_dfe_cc (float lambda_ff, float lambda_fb,
53 unsigned int num_fftaps, unsigned int num_fbtaps);
54 gr_complex slicer_0deg(gr_complex baud);
55 gr_complex slicer_45deg(gr_complex baud);
59 int work (int noutput_items,
60 gr_vector_const_void_star &input_items,
61 gr_vector_void_star &output_items);