genwcdmauplinksignal.cpp

用matlab程序实现WCDMA系统的仿真

#include <malloc.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "mex.h"
#include "GenUplinkSignal.cpp"


void GenWCDMAUplinkSignal(double *,double *,double *,double *,
						  double *,double *,unsigned ,double *,unsigned ,
						  unsigned ,double *,double *,unsigned );


void mexFunction (int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
/***************************************************************************************
* void mexFunction (int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
*
* Copyright 2002 The Mobile and Portable Radio Research Group
*
*
* Gateway function for GenRxRootRaisedCosine.  Supports that passing of five input parameters
* and one output parameter.  The five input parameters are
*		CurrentChips		Complex valued chipping sequence associated with current frame
*		PastChips			Complex valued chipping sequence associated with preveious frame
*		FutureChips			Complex valued chipping sequence associated with next frame
*		PulseShape			Real valued vector containing pulse shape
*		SamplesPerChip		Number of signal sample Points per chip
*
* The output parameter is
*		UplinkSignal		Signal associated with current uplink frame (Current Chips_
***************************************************************************************/
{
	double *mexPulseShape;
	double *mexRealSig,*mexImagSig;
	double *mexRealCurrentChips,*mexImagCurrentChips;
	double *mexRealPastChips,*mexImagPastChips;
	double *mexRealFutureChips,*mexImagFutureChips;
	int mexPulseLength,mexChipLength,mexSamplesPerChip;
	long int mexSignalLength;
	int mrows,ncols;
	double dbleScale,fraction,integer_portion;
	const mxArray *tprhs;
	
	
	//Check for the proper number of input and output arguments
	if (nrhs != 5) mexErrMsgTxt("\nExactly FIVE input arguemnts are required!!\n");
	else if (nlhs != 1 ) mexErrMsgTxt("\nExactly ONE output arguement is required!!\n");

	//First two Inputs must be vectors
	//Current Chip Sequence
	//Must be a double, complex, and a vector
	tprhs = *prhs;
	mrows = mxGetM(tprhs);
	ncols = mxGetN(tprhs);
	if ( !mxIsDouble(tprhs) || !mxIsComplex(tprhs) || (mrows ==1 && ncols ==1) || (mrows >1 && ncols >1))
		mexErrMsgTxt("\nCurrent Chip Sequence must be a complex vector\n");
	if (mrows > ncols) mexChipLength = mrows;
	else mexChipLength = ncols;
	mexRealCurrentChips = mxGetPr(tprhs);
	mexImagCurrentChips = mxGetPi(tprhs);

	//Past Chip Sequence
	//Must be a double, complex, and a vector
	tprhs = *(prhs+1);
	mrows = mxGetM(tprhs);
	ncols = mxGetN(tprhs);
	if ( !mxIsDouble(tprhs) || !mxIsComplex(tprhs) || (mrows ==1 && ncols ==1) || (mrows >1 && ncols >1))
		mexErrMsgTxt("\nPast Chip Sequence must be a complex vector\n");
	if (mrows > ncols) mexChipLength = mrows;
	else mexChipLength = ncols;
	mexRealPastChips = mxGetPr(tprhs);
	mexImagPastChips = mxGetPi(tprhs);

	//Next Chip Sequence
	//Must be a double, complex, and a vector
	tprhs = *(prhs+2);
	mrows = mxGetM(tprhs);
	ncols = mxGetN(tprhs);
	if ( !mxIsDouble(tprhs) || !mxIsComplex(tprhs) || (mrows ==1 && ncols ==1) || (mrows >1 && ncols >1))
		mexErrMsgTxt("\nFuture Chip Sequence must be a complex vector\n");
	if (mrows > ncols) mexChipLength = mrows;
	else mexChipLength = ncols;
	mexRealFutureChips = mxGetPr(tprhs);
	mexImagFutureChips = mxGetPi(tprhs);

	//Pulse Sphape
	//Must be a double, real and a vector
	tprhs = *(prhs+3);
	mrows = mxGetM(tprhs);
	ncols = mxGetN(tprhs);
	if ( !mxIsDouble(tprhs) || mxIsComplex(tprhs) || (mrows ==1 && ncols ==1) || (mrows >1 && ncols >1))
		mexErrMsgTxt("\nPulse Shape must be a real vector\n");
	if (mrows > ncols) mexPulseLength = mrows;
	else mexPulseLength = ncols;
	mexPulseShape = mxGetPr(tprhs);

	//Last Input must be a scalar
	//SamplesperChip
	tprhs = *(prhs+4);
	mrows = mxGetM(tprhs);
	ncols = mxGetN(tprhs);
	if ( !mxIsDouble(tprhs) || mxIsComplex(tprhs) || !(mrows ==1 && ncols ==1))
		mexErrMsgTxt("\nSamplesperChip must be a scalar\n");
	dbleScale=mxGetScalar(tprhs);
	fraction=modf(dbleScale,&integer_portion);
	if (integer_portion <= 0.0) mexErrMsgTxt("\nSamplesPerChip must be positive\n");
	mexSamplesPerChip = (int) integer_portion;
	if (fraction != 0) mexErrMsgTxt("\nSamplesPerChip must be an integer\n");


	//Determine Size of output array
	mexSignalLength =  mexPulseLength + (mexSamplesPerChip*(mexChipLength-1));
	

	//Allocate output Array
	*plhs = mxCreateDoubleMatrix(1,mexSignalLength,mxCOMPLEX);
	mexRealSig = mxGetPr(*plhs);
	mexImagSig = mxGetPi(*plhs);


	//Call WCDMA Uplink Signal Generator
	GenWCDMAUplinkSignal(mexRealCurrentChips,mexImagCurrentChips,
						 mexRealPastChips,mexImagPastChips,
						 mexRealFutureChips,mexImagFutureChips,
						 (unsigned) mexChipLength,mexPulseShape,
						(unsigned) mexPulseLength,(unsigned) mexSamplesPerChip,
						 mexRealSig,mexImagSig,(unsigned) mexSignalLength);
}