DocumentCode
1343114
Title
Low-complexity time-domain SNR estimation for OFDM systems
Author
Ijaz, A. ; Awoseyila, A.B. ; Evans, Barry G.
Author_Institution
Centre for Commun. Syst. Res., Univ. of Surrey, Guildford, UK
Volume
47
Issue
20
fYear
2011
Firstpage
1154
Lastpage
1156
Abstract
A low-complexity signal-to-noise ratio (SNR) estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems in frequency-selective fading channels is proposed. The estimator is based on a conventional preamble having two identical parts. It uses the correlation of the received signal samples to estimate signal power while noise power is estimated using the difference between received samples. Simulation results show that the proposed estimator is robust to the channel´s frequency selectivity and its attained accuracy and reduced complexity make it an attractive choice for current wireless OFDM systems.
Keywords
OFDM modulation; channel estimation; fading channels; frequency selective surfaces; signal sampling; time-domain analysis; white noise; SNR estimation; frequency selective fading channels; orthogonal frequency division multiplexing; signal power estimation; signal sampling; signal-to-noise ratio; time-domain analysis; while noise power; wireless OFDM systems;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2011.2014
Filename
6036075
Link To Document