A comparison of SNR estimation techniques for the AWGN channel

Author

Pauluzzi, David R. ; Beaulieu, Norman C.

Author_Institution

Wireless Prods. Div., PMC-Sierra Inc., Vancouver, BC, Canada

Volume

48

Issue

10

fYear

2000

fDate

10/1/2000 12:00:00 AM

Firstpage

1681

Lastpage

1691

Abstract

The performances of several signal-to noise ratio (SNR) estimation techniques reported in the literature are compared to identify the "best" estimator. The SNR estimators are investigated by the computer simulation of baseband binary phase-shift keying (PSK) signals in real additive white Gaussian noise (AWGN) and baseband 8-PSK signals in complex AWGN. The mean square error is used as a measure of performance. In addition to comparing the relative performances, the absolute levels of performance are also established; the simulated performances are compared to a published Cramer-Rao bound (CRB) for real AWGN and a CRB for complex AWGN that is derived here. Some known estimator structures are modified to perform better on the channel of interest. Estimator structures for both real and complex channels are examined.

Keywords

AWGN channels; mean square error methods; noise; parameter estimation; phase shift keying; receivers; AWGN channel; CRB; Cramer-Rao bound; PSK; SNR estimation techniques; baseband 8-PSK signals; binary phase-shift keying; complex AWGN.; estimation techniques; mean square error; performance; real additive white Gaussian noise; signal-to noise ratio; AWGN channels; Additive white noise; Baseband; Computer simulation; Gaussian noise; Mean square error methods; Phase estimation; Phase shift keying; Signal processing; Signal to noise ratio;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.871393

Filename

871393