qfunct.m

Matlab实现SONET/SDH光通信系统simulink仿真程序源代码

% 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)).

function [y]=Qfunct(x)
y=( 1 / 2 ) * erfc( x / sqrt(2) );