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https://gitea.osmocom.org/cellular-infrastructure/osmo-trx.git
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171 lines
4.4 KiB
C++
171 lines
4.4 KiB
C++
/*
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* Copyright 2011 Free Software Foundation, Inc.
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* Copyright 2008, 2010 Kestrel Signal Processing, Inc.
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*
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* This software is distributed under the terms of the GNU Affero Public License.
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* See the COPYING file in the main directory for details.
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*
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* This use of this software may be subject to additional restrictions.
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* See the LEGAL file in the main directory for details.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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Contributors:
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Harvind S. Samra, hssamra@kestrelsp.com
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*/
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#include "sigProcLib.h"
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//#include "radioInterface.h"
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#include <Logger.h>
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#include <Configuration.h>
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#include <GSMCommon.h>
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using namespace std;
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using namespace GSM;
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ConfigurationTable gConfig;
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int main(int argc, char **argv) {
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gLogInit("sigProcLibTest","DEBUG");
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int samplesPerSymbol = 1;
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int TSC = 2;
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sigProcLibSetup(samplesPerSymbol);
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signalVector *gsmPulse = generateGSMPulse(2,samplesPerSymbol);
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cout << *gsmPulse << endl;
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BitVector RACHBurstStart = "01010101";
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BitVector RACHBurstRest = "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
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BitVector RACHBurst(BitVector(RACHBurstStart,gRACHSynchSequence),RACHBurstRest);
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signalVector *RACHSeq = modulateBurst(RACHBurst,
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*gsmPulse,
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9,
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samplesPerSymbol);
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generateRACHSequence(*gsmPulse,samplesPerSymbol);
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complex a; float t;
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detectRACHBurst(*RACHSeq, 5, samplesPerSymbol,&a,&t);
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//cout << *RACHSeq << endl;
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//signalVector *autocorr = correlate(RACHSeq,RACHSeq,NULL,NO_DELAY);
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//cout << *autocorr;
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//exit(1);
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/*signalVector x(6500);
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x.fill(1.0);
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frequencyShift(&x,&x,0.48*M_PI);
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signalVector *y = polyphaseResampleVector(x,96,65,NULL);
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cout << *y << endl;
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exit(1);*/
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//CommSig normalBurstSeg = "0000000000000000000000000000000000000000000000000000000000000";
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BitVector normalBurstSeg = "0000101010100111110010101010010110101110011000111001101010000";
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BitVector normalBurst(BitVector(normalBurstSeg,gTrainingSequence[TSC]),normalBurstSeg);
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generateMidamble(*gsmPulse,samplesPerSymbol,TSC);
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signalVector *modBurst = modulateBurst(normalBurst,*gsmPulse,
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0,samplesPerSymbol);
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//delayVector(*rsVector2,6.932);
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complex ampl = 1;
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float TOA = 0;
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//modBurst = rsVector2;
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//delayVector(*modBurst,0.8);
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/*
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signalVector channelResponse(4);
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signalVector::iterator c=channelResponse.begin();
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*c = (complex) 9000.0; c++;
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*c = (complex) 0.4*9000.0; c++; c++;
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*c = (complex) -1.2*0;
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signalVector *guhBurst = convolve(modBurst,&channelResponse,NULL,NO_DELAY);
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delete modBurst; modBurst = guhBurst;
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*/
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signalVector *chanResp;
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/*
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double noisePwr = 0.001/sqrtf(2);
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signalVector *noise = gaussianNoise(modBurst->size(),noisePwr);
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*/
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float chanRespOffset;
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analyzeTrafficBurst(*modBurst,TSC,8.0,samplesPerSymbol,&l,&TOA,1,true,&chanResp,&chanRespOffset);
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//addVector(*modBurst,*noise);
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cout << "ampl:" << ampl << endl;
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cout << "TOA: " << TOA << endl;
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//cout << "chanResp: " << *chanResp << endl;
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SoftVector *demodBurst = demodulateBurst(*modBurst,*gsmPulse,samplesPerSymbol,(complex) ampl, TOA);
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cout << *demodBurst << endl;
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/*
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COUT("chanResp: " << *chanResp);
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signalVector *w,*b;
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designDFE(*chanResp,1.0/noisePwr,7,&w,&b);
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COUT("w: " << *w);
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COUT("b: " << *b);
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SoftSig *DFEBurst = equalizeBurst(*modBurst,TOA-chanRespOffset,samplesPerSymbol,*w,*b);
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COUT("DFEBurst: " << *DFEBurst);
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delete gsmPulse;
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delete RACHSeq;
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delete modBurst;
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delete sendLPF;
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delete rcvLPF;
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delete rsVector;
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//delete rsVector2;
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delete autocorr;
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delete chanResp;
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delete noise;
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delete demodBurst;
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delete w;
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delete b;
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delete DFEBurst;
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*/
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sigProcLibDestroy();
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}
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