A Novel RMS Delay Spread Estimation for Wireless OFDM Systems

Xiaodong XU, Ya JING, Xiaohu YOU, Junhui ZHAO

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Summary :

Multipath search based instantaneous root-mean-squared (RMS) delay spread (RDS) estimators mainly depend on path detection or multipath search. This paper proposes a novel method for multipath search through Minimum Descriptive Length (MDL) criterion, and hence a novel instantaneous RDS estimation method for wireless OFDM systems. compared with the conventional multipath search based instantaneous RDS estimators, the proposed estimator doesn't need any a priori information about the noise variance and the channel power delay profile (PDP) while the performance is improved. Simulation results demonstrate that the proposed estimator is also insensitive to the variance of SNR and robust against the frequency selectivity, as well as the vehicle speed.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.10 pp.2558-2565
Publication Date
2006/10/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e89-a.10.2558
Type of Manuscript
Special Section PAPER (Special Section on Information Theory and Its Applications)
Category
Coding Theory

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