How to speed up this function?
1 回表示 (過去 30 日間)
古いコメントを表示
Hi all,
I am calculating a value Gamma as shown in the image below.
I have implemented this calculation as a for-loop and I suspect it could be done without using a for-loop and be faster. Every h term is the jth column of an NxK matrix and Pj is the jth column of KxK diagonal matrix P. What is the fastest way to calculate this value?
function [ GAMMA ] = gamma_dnc( P,Hh,Ht,K )
%GAMMA_DNC Calculates the component GAMMA in the DNC
% beamforming matrix V.
% Running total
total = 0;
for j = 1:K
p = P(j,j); % Select jth column of P
ht = Ht(:,j); % Select jth column of Ht
hh = Hh(:,j); % Select jth column of Hh
% Perform summation
h1 = ht*(hh');
h2 = hh*(ht');
h3 = ht*(ht');
h4 = h1 + h2 + h3;
total = total + p*h4;
end
GAMMA = mean2(total);
end
1 件のコメント
James Tursa
2016 年 5 月 26 日
What are the dimensions of the variables? And which variables are complex?
採用された回答
その他の回答 (0 件)
参考
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!