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gr_lms_dfe_cc.h

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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2005 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00020  * Boston, MA 02111-1307, USA.
00021  */
00022 
00023 #ifndef INCLUDED_GR_LMS_DFE_CC_H
00024 #define INCLUDED_GR_LMS_DFE_CC_H
00025 
00026 #include <gr_sync_block.h>
00027 
00028 class gr_lms_dfe_cc;
00029 typedef boost::shared_ptr<gr_lms_dfe_cc> gr_lms_dfe_cc_sptr;
00030 
00031 gr_lms_dfe_cc_sptr gr_make_lms_dfe_cc (float lambda_ff, float lambda_fb,
00032                                        unsigned int num_fftaps, unsigned int num_fbtaps);
00033 
00038 class gr_lms_dfe_cc : public gr_sync_block
00039 {
00040   friend gr_lms_dfe_cc_sptr gr_make_lms_dfe_cc (float lambda_ff, float lambda_fb,
00041                                                 unsigned int num_fftaps, unsigned int num_fbtaps);
00042   
00043   float d_lambda_ff;
00044   float d_lambda_fb;
00045   std::vector<gr_complex>  d_ff_delayline;
00046   std::vector<gr_complex>  d_fb_delayline;
00047   std::vector<gr_complex>  d_ff_taps;
00048   std::vector<gr_complex>  d_fb_taps;
00049   unsigned int d_ff_index;
00050   unsigned int d_fb_index;
00051 
00052   gr_lms_dfe_cc (float lambda_ff, float lambda_fb, 
00053                  unsigned int num_fftaps, unsigned int num_fbtaps);
00054   gr_complex slicer_0deg(gr_complex baud);
00055   gr_complex slicer_45deg(gr_complex baud);
00056 
00057   public:
00058   
00059   int work (int noutput_items,
00060             gr_vector_const_void_star &input_items,
00061             gr_vector_void_star &output_items);
00062 };
00063 
00064 #endif

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