wbupec.rar_standcw4_treeview控件

#include <stdio.h> #include <stdlib.h> #include <math.h> #include "Setting.H" #include "RS.H" #include "Function.H" #include "FrameOfdm.H" WordType TxSymbolMark = 0; /* Indicates the symbol index in * SrcToChan() */ WordType TxBitMark = 0; /* Indicates the bit index of a * symbol in SrcToChan() */ WordType RxPosMark = 0; /* Indicates the received bit * index in ChanToSrc() */ extern WordType FrameTx; /* Indicates transmitted subframe * number */ extern WordType FrameRx; /* Indicates received subframe * number */ extern float DataBuffer[NullSampleSize / 2 + NullSampleSize + SymbolSize * 3]; /* Processed data buffer in * FindFrame() */ DType OriInforTx[52]; /* Data buffer for the input of * channel encoder; * Data is converted from source * coded information by SrcToChan() */ WordType OriInforRx[3 * SrcVector]; /* Data buffer for the output of * channel decoder; * Data is converted from demodulated * information by ChanToSrc() */ DType RefPhaseTx[UsedCarrier]; /* Buffer for transmit reference * phase */ float RefPhaseRx[UsedCarrier]; /* Buffer for received reference * phase */ unsigned int Seed = 101; /* Initial seed of Random() */ WordType Transmit(short SourceCode[], short FinalData[]) { WordType i, k; //float j; DType ChannelData[RSTotalSym]; DType ConvData[UsedCarrier * SymPerFrame]; int TmpDataR[FFTSize], TmpDataI[FFTSize]; /* Convert SrcVector bits to required data mode (RSInforBit bits per symbol) */ SrcToChan(SourceCode, OriInforTx, &TxSymbolMark, &TxBitMark); /* Proceed RS coding and OFDM when all information symbols arrive */ /* Get the available data */ if (TxSymbolMark > (RSInforSym - 2)) { /* First part of 5 source coded frames */ if (TxSymbolMark > (RSInforSym - 1)) { for (i = 0; i < RSInforSym; i++) { ChannelData[i] = OriInforTx[i]; } for (i = RSInforSym; i <= TxSymbolMark; i++) { OriInforTx[i - RSInforSym] = OriInforTx[i]; } TxSymbolMark -= RSInforSym; } /* Second part of 5 source coded frames */ else { for (i = 0; i < RSInforSym; i++) { ChannelData[i] = OriInforTx[i]; } TxSymbolMark = 0; TxBitMark = 0; } /* RS encoding */ Encode_RS(&ChannelData[0], &ChannelData[RSInforSym]); /* Proceed OFDM below */ if (FrameTx == TotalFrame) /* First subframe of OFDM */ { FrameTx = 1; /* Add NullSampleSize padded zero */ for (i = 0; i < NullSampleSize; i++) { FinalData[i] = 0; } k = NullSampleSize; /* Two additive lines for frame synchronization & reference phase */ /* Add frame synchronization below in time waveform */ for (i = 0; i < UsedCarrier; i++) { RefPhaseTx[i] = (DType) Random(&Seed, 3); } for (i = 0; i < FFTSize; i++) { if ((i > CarrierJumpPos - 2) && (i < CarrierJumpPos + UsedCarrier - 1)) { switch (RefPhaseTx[i + 1 - CarrierJumpPos]) { case 0: TmpDataR[i] = 16384; TmpDataI[i] = 0; break; //2^14 case 1: TmpDataR[i] = 0; TmpDataI[i] = 16384; break; case 2: TmpDataR[i] = -16384; TmpDataI[i] = 0; break; case 3: TmpDataR[i] = 0; TmpDataI[i] = -16384; } } else { TmpDataR[i] = 0; TmpDataI[i] = 0; } } for (i = 1; i < FFTSize; i += 2) { TmpDataR[i] = 0; TmpDataI[i] = 0; } FFT(TmpDataR, TmpDataI, -1); for (i = GuardTimeSize; i > 0; i--) { FinalData[k] = (short)(TmpDataR[FFTSize - i]) ; k++; } for (i = 0; i < FFTSize; i++) { FinalData[k] = (short)(TmpDataR[i]); k++; } /* Add reference phase below in time waveform */ for (i = 0; i < UsedCarrier; i++) { RefPhaseTx[i] = (DType) Random(&Seed, 3); } for (i = 0; i < FFTSize; i++) { if ((i > CarrierJumpPos - 2) && (i < CarrierJumpPos + UsedCarrier - 1)) { switch (RefPhaseTx[i + 1 - CarrierJumpPos]) { case 0: TmpDataR[i] = 16384; TmpDataI[i] = 0; break; case 1: TmpDataR[i] = 0; TmpDataI[i] = 16384; break; case 2: TmpDataR[i] = -16384; TmpDataI[i] = 0; break; case 3: TmpDataR[i] = 0; TmpDataI[i] = -16384; } } else { TmpDataR[i] = 0; TmpDataI[i] = 0; } } FFT(TmpDataR, TmpDataI, -1); for (i = GuardTimeSize; i > 0; i--) { FinalData[k] = (short)(TmpDataR[FFTSize - i]); k++; } for (i = 0; i < FFTSize; i++) { FinalData[k] = (short)(TmpDataR[i]); k++; } /* Adjust amplitude of frame synchronization & reference phase */ /* j = 0; for (i = k - 2 * SymbolSize; i < k; i++) { if (j < (float)fabs(FinalData[i])) { j = (float)fabs(FinalData[i]); } } for (i = k - 2 * SymbolSize; i < k; i++) { FinalData[i] *= (float) (0.95 / j); }*/ } else { FrameTx++; k = 0; } /* Convert the data base to CodewordBit */ ConvBase(ChannelData, ConvData, RSTotalSym, 1); ConvData[UsedCarrier * SymPerFrame -1] = 0; /* Change to Gray code */ Gray2(ConvData, RSTotalSym * RSInforBit / CodewordBit); /* OFDM modulation */ OFDMModu(ConvData, &FinalData[k], RefPhaseTx); /* Adjust amplitude of transmit data */ /* j = 0; for (i = k; i < k + SymbolSize * SymPerFrame; i++) { if (j < (float)fabs(FinalData[i])) { j = (float)fabs(FinalData[i]); } } for (i = k; i < k + SymbolSize * SymPerFrame; i++) { FinalData[i] *= (float) (0.95 / j); }*/ for(i = 0; i < k + SymbolSize * SymPerFrame; i++) FinalData[i] = FinalData[i] & 0xffe0; return (k + SymbolSize * SymPerFrame); } else { return 0; } } WordType Receive(float RecData[], short SourceCode[]) { WordType i, k; DType ChanCodeData[RSTotalSym]; DType ConvData[UsedCarrier * SymPerFrame]; float TmpDataR[FFTSize], TmpDataI[FFTSize]; if (FrameRx == TotalFrame) { FrameRx = 1; /* Two additive lines for frame synchronization & reference phase */ /* Remove NullSampleSize padded zero & frame synchronization below */ k = SymbolSize; /* Get reference phase below */ for (i = 0; i < FFTSize; i++) { TmpDataR[i] = RecData[k + GuardTimeSize]; TmpDataI[i] = 0; k++; } k += GuardTimeSize; /* Adjust the address access point */ FFT(TmpDataR, TmpDataI, 1); for (i = CarrierJumpPos - 1; i < CarrierJumpPos + UsedCarrier - 1; i++) { RefPhaseRx[i - CarrierJumpPos + 1] = (float) atan2((double)(TmpDataI[i]), (double)(TmpDataR[i])); if (RefPhaseRx[i - CarrierJumpPos + 1] < 0) { RefPhaseRx[i - CarrierJumpPos + 1] += (float)(PI * 2); } } } else { FrameRx++; k = 0; } /* OFDM modulation */ OFDMDemo(&RecData[k], ConvData, RefPhaseRx); /* Change to Gray code */ Gray2(ConvData, RSTotalSym * RSInforBit / CodewordBit); /* Convert the data base to CodewordBit */ ConvBase(ConvData, ChanCodeData, RSTotalSym * RSInforBit / CodewordBit, 0); /* RS decoding */ i = Decode_RS(ChanCodeData); /* Convert RS data to required data mode (SrcVector bits per frame) */ ChanToSrc(ChanCodeData, OriInforRx, &RxPosMark); /* Decompress the source data */ if (RxPosMark < (3 * SrcVector - 1)) { for (i = 0; i < (2 * SrcVector); i++) { SourceCode[i] = OriInforRx[i]; } for (i = (2 * SrcVector); i < RxPosMark; i++) { OriInforRx[i