qfunct.m

来自「用MATLAB 模拟仿真数字调制4PSK求误码率,误信率并配有GUI」· M 代码 · 共 7 行

function [y]=Qfunct(x)
% [y]=Qfunct(x)
%		QFUNCT  evaluates the Q-function. 
%   		y = 1/sqrt(2*pi) * integral from x to inf of exp(-t^2/2) dt.
%     		y = (1/2) * erfc(x/sqrt(2)).
y=(1/2)*erfc(x/sqrt(2));
%qfunct=1/sqrt(2pi)exp(-x^2/2)|(x,wuqiong)积分限