A Novel Comb-Pilot Transform Domain Frequency Diversity Channel Estimation for OFDM System
Loading...
Date
2009-12
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
Due to implementation complexity, the transform domain channel estimation based on training symbols or comb-type pilots has been paid more attention because of its efficient algorithm FFT/IFFT. However, in a comb-type OFDM system, the length of the channel impulse response is much smaller than the pilot number. In this case, the comb-pilot transform domain channel estimation only works as interpolation like the Least Squares (LS) algorithm, but loses the noise suppression function. In this paper, we propose a novel frequency diversity channel estimation method via grouped pilots combining. With this estimator, not only the channel frequency response on non-pilot subcarriers can be interpolated, but also the noise can be better suppressed. Moreover, it does not need prior statistical characteristics of the wireless channel.
Description
Citation
Radioengineering. 2009, vol. 18, č. 4, s. 497-502. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2009/09_04_497_502.pdf
http://www.radioeng.cz/fulltexts/2009/09_04_497_502.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en