Signal Power Estimation Based on Orthogonal Projection and Oblique Projection

Norisato SUGA
Toshihiro FURUKAWA

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E99-A    No.12    pp.2571-2575
Publication Date: 2016/12/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E99.A.2571
Type of Manuscript: LETTER
Category: Digital Signal Processing
Keyword: 
SINR estimation,  orthogonal projection,  oblique projection,  structured noise,  

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Summary: 
In this letter, we show the new signal power estimation method base on the subspace projection. This work mainly contributes to the SINR estimation problem because, in this research, the signal power estimation is implicitly or explicitly performed. The difference between our method and the conventional method related to this topic is the exploitation of the subspace character of the signals constructing the observed signal. As tools to perform subspace operation, we apply orthogonal projection and oblique projection which can extracts desired parameters. In the proposed scheme, the statistics of the projected observed signal by these projection are used to estimate the parameters.

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