qpsk_discriminators.h

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/*
 * SPUC - Signal processing using C++ - A DSP library
 * 
 * This program 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 2, or (at your option)
 * any later version.
 * 
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef QPSKDISC
#define QPSKDISC
#include <complex.h>
#include <delay.h>
namespace SPUC {
class qpsk_discriminators
{
public:
        int bpsk_mode;
        complex<long> fmf;
        complex<long> prev_sam,prev_sym,data;
        complex<long> hard_decision_prev,decision;
        delay< complex<long> > hard_decision_delay,timing_disc_delay;

        void update(complex<long> data_in, complex<long> decision_in, int sym_pls);
        void sample(complex<long> fmf_in, complex<long> data_in, complex<long> decision_in, int sym_pls);
        qpsk_discriminators(int bpsk=0) : hard_decision_delay(2), timing_disc_delay(3)
                { bpsk_mode = bpsk;}
        void set_mode(int bpsk=0) { bpsk_mode = bpsk;}
        long cross_prod_afc(void);
        long quad(void);
        long rcfd(void);
        long dd_timing_disc(void);
        long nda_timing_disc(void);
        long symbol_lock_out(void);
        long pll_disc(void);
};
} // namespace SPUC 
#endif    

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