Maximum Likelihood Based Measurement of Interference Level and Noise Power for Memoryless Gaussian Channel with Deterministic Interference

Author

Chen, Fangjiong ; Ji, Fei ; Cao, Tuohuang ; Xiong, Shangkun

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China

Volume

60

Issue

1

fYear

2012

fDate

1/1/2012 12:00:00 AM

Firstpage

19

Lastpage

22

Abstract

The model of memoryless Gaussian channel with deterministic interference are common in various engineering applications. In this letter we propose a non-data-aided algorithm for joint measurement of the interference level and the noise power. The algorithm applies an iterative approach based on the maximum likelihood criterion. The Cramer-Rao bound (CRB) is also derived as the performance benchmark. Simulation results show that the proposed approach has fast convergence speed and its measurement performance is almost identical to the CRB.

Keywords

Gaussian channels; iterative methods; maximum likelihood estimation; radiofrequency interference; radiofrequency measurement; CRB; Cramer-Rao bound; convergence speed; deterministic interference; interference level; iterative approach; maximum likelihood based measurement; memoryless Gaussian channel; noise power; nondata-aided algorithm; performance benchmark; Interference; Maximum likelihood estimation; Noise measurement; Power measurement; Signal to noise ratio; Cramer-Rao Bound; Maximum likelihood estimation; interference measurement;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2011.100411.100284

Filename

6042889