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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % 对M=16的QAM系统进行蒙特卡罗仿真 % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% clear all echo off SNRindB1=0:2:15; SNRindB2

function [y]=Qfunct(x) % [y]=Qfunct(x) % QFUNCT计算Q函数 y=(1/2)*erfc(x/sqrt(2));

function[p]=cm_sm41(snr_in_dB) %[p]=cm_sm41(snr_in_dB) % CM_SM41求出16 QAM以dB为单位的给定信噪比的 % 符号误码率 N=10000; d=1; %符号间的最小距离 Eav=10*d^2; %每符号能量 snr=1

function[gsrv1,gsrv2]=gngauss(m,sgma) % [gsrv1,gsrv2]=gngauss(m,sgma) % [gsrv1,gsrv2]=gngauss(sgma) % [gsrv1,gsrv2]=gngauss % GNGAUSS产生两个均值为m、标准差sgm

function u = EVOLUTION(u0, g, lambda, mu, alf, epsilon, delt, numIter) % EVOLUTION(u0, g, lambda, mu, alf, epsilon, delt, numIter) updates the level set function % according to the level set evol

% This Matlab file demomstrates the level set method in Li et al's paper % "Level Set Evolution Without Re-initialization: A New Variational Formulation" % in Proceedings of CVPR'05, vol. 1, p