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% File: crosscorrelation.m 
% ------------------------ 
% This function calculate the crosscorrelation of x(n) and s(n) 
 
function[crosscorrelation] = crosscorrelation(m, signalvector_x, signalvector_s); 
% L: Sample length 
% m: Timeshift interval 
% signalvector_x: Input sequence 
% signalvector_s: Signal sequence 
L = length(signalvector_x); 
crosscorrelation = 0; 
for i = 1: L - abs(m) 
    crosscorrelation = signalvector_x(i) * signalvector_s(i + abs(m)) + crosscorrelation; 
end 
crosscorrelation = crosscorrelation / (L - abs(m));