Talk:Sample matrix inversion

Number of samples

Currently the lead says

Using K samples x(k), k=1,2,...,K-1

This is only K-1 samples. Either K should be changed to K-1 or vice versa. Also, in the equation

${\hat {R}}_{u}(k)=1/k\sum (x(k)x^{H}(k)).$

I think the first two appearances of k should be K, since k is just the index of the summation. Duoduoduo (talk) 02:57, 6 August 2013 (UTC)