一个one-bit delta-sigma ADC的估计过程

#include <stdio.h>

int main(void){
	int N=1;	//N是信号个数,以一个信号为例
	
	double transmitted_signal[N];
	double estimated_signal[N];	
	transmitted_signal[0]=1.678;	//要估计的信号值,此处为任意值
	

	for (int i = 0; i < N; i++)
	{	
		ADC(transmitted_signal[i], estimated_signal[i]);	
	}
} 

void ADC(double(transmitted_signal), double(estimated_signal)) {
	double Vref = 2.5;	//|Vref|>transmitted_signal[0]信号值即可,也为任意值
	int adcN = 50; 	//取样次数

	double delta;
	double sumOfDelta;
	int bitStream[adcN];
	
	double DACoutput = Vref;	//+ or -Vref
	
	//对于每一个信号都取adcN次平均值
	for (int j = 0; j < adcN; j++)
	{
		//初始化
		bitStream[j]=0; 
	
//comparator(&transmitted_signal, &DACoutput, &delta);
//integrator(&delta, &sumOfDelta);	
		delta = transmitted_signal - DACoutput;	
		sumOfDelta += delta;
		printf("delta = %f\n", delta);
		printf("sumOfDelta = %lf\n", sumOfDelta);

		if (sumOfDelta>=0)
		{
			bitStream[j] = 1;
			DACoutput = Vref;
		}
		else
		{
			bitStream[j] = 0;
			DACoutput = -Vref;
		}
		printf("%d\n", bitStream[j]);
		printf("DACoutput_signal = %lf\n", DACoutput);
		estimated_signal += DACoutput;
	}
	//求平均 
	estimated_signal /= adcN;
	printf("estimated_signal = %lf\n", estimated_signal); 
	//随着循环次数增加,能输出一个收敛于transmitted_signal[0]的值
}

标签：double,signal,DACoutput,transmitted,ADC,delta,bit,estimated
来源： https://blog.csdn.net/Fky_mie/article/details/115793297