Talk:Pisarenko harmonic decomposition

Where can I find a copy of the article (electronic o paper version) by Pisarenko "The retrieval of harmonics from a covariance function"? 193.205.213.166 17:17, 13 April 2007 (UTC)

Power estimation
Is there a reason the estimation of the complex signals powers isn't in this article? I can probably put it in otherwise. (As soon as I read up on writing matrices in wikipedia.)

Something like this:

AP=C where C is [eigenvalue1 - eigenvalueMIN ; eigenvalue2 - eigenvalueMIN ; ...] (since eigenvalueMIN = noise variance),

P=[power1 ; power2; ...] and

A=[|V1(w1)|^2 |V1(w2)|^2... ; |V2(w1)|^2 |V2(w2)|^2 ... ; ...].

Vi is the eigenfilter for eigenvalue/eigenvector i, and wi is the angles from the roots of the noise eigenfilter.

I hope that semi-MATLAB notation was understandable.Swooch (talk) 14:24, 22 January 2008 (UTC)