compcomp.c

来自「完整的OFDM系统,含Matlab仿真代码和DSP源代码下载.平台Tms320C」· C语言 代码 · 共 24 行

//compcomp.c
//
// Project Red 2002: High Performance OFDM Modem 
// Against Channel Imperfections
// Auther: Linus Falk

#include "ofdm.h"
#include <stdio.h>

//#pragma CODE_SECTION(compcomp,"edata");
void compcomp(float frame[BLOCK_SIZE]){
	int i,j;
	frame[0] = 0;
	frame[1] = 0;
	frame[FFT_SIZE] = 0; //re
	frame[FFT_SIZE+1] = 0; //im
	for(i=(BLOCK_SIZE -2),j=2; i>= FFT_SIZE+2; i-=2,j+=2){
		frame[i] = frame[j]; //re
		frame[i+1] = -frame[j+1]; //im
	}
}