00001 /* 00002 * SPUC - Signal processing using C++ - A DSP library 00003 * 00004 * This program is free software; you can redistribute it and/or modify 00005 * it under the terms of the GNU General Public License as published by 00006 * the Free Software Foundation; either version 2, or (at your option) 00007 * any later version. 00008 * 00009 * This program is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 * GNU General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU General Public License 00015 * along with this program; if not, write to the Free Software 00016 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00017 */ 00018 #include <time.h> // For time functions 00019 #ifdef KBHITD 00020 #include <conio.h> // For kbhit 00021 #endif 00022 #include <max_pn.h> // Maximal length PN generator 00023 #include <complex.h> 00024 #include <iostream> 00025 #include <iomanip> 00026 namespace SPUC { 00035 class qpsk_ber_test 00036 { 00037 public: 00038 long modc; 00039 time_t start_time; 00040 max_pn ref; 00041 complex<long> corr_sum; 00042 long errors; 00043 complex<long> rotate; 00044 bool sync; 00045 long interval; 00046 long prev_errors; 00047 00048 qpsk_ber_test(void) : ref(0x006d,63,-1) { 00049 modc = 1; 00050 start_time = time(NULL); 00051 errors = 0; 00052 corr_sum = 0; 00053 sync = 0; 00054 rotate = complex<long>(0,0); 00055 interval = 0; 00056 prev_errors = 0; 00057 } 00058 void init_delay(int c) { for (int i=0;i<c;i++) ref.out(); } 00059 bool found_sync(void) { return(sync); } 00060 void ber_results(long received); 00061 long synchronize(long* received, complex<long> data); 00062 void final_results(long received); 00063 void correlate(long* received, complex<long> data) { 00064 synchronize(received, data); 00065 ber_results(*received); 00066 } 00067 void print_running_ber(void) { 00068 long sym_int = interval; 00069 cout << "Symbol interval = " << setw(8) << sym_int; 00070 cout << "BER = " << running_ber() << '\n'; 00071 } 00072 double running_ber(void); 00073 double ber(long received) { return(errors/(double)received); } 00074 00075 }; 00076 } // namespace SPUC