Channel estimation for PIRP-OFDM in slowly time-varying channel: First-order or second-order statistics?
Ma, Y, Yi, N and Tafazolli, R (2006) Channel estimation for PIRP-OFDM in slowly time-varying channel: First-order or second-order statistics? IEEE SIGNAL PROCESSING LETTERS, 13 (3). 129 - 132. ISSN 1070-9908
The statistics-based channel estimators can estimate the channel state information (CSI) in the static channel but call only obtain the averaged CSI (ACSI) in the time-varying (TV) channel. This letter investigates both first-order statistics (FOS) and second-order statistics (SOS)-based channel estimators for the pseudo random postfix (PRP) orthogonal frequency-division multiplexing system in the slowly TV channel. It is shown that the FOS-based approach outperforms the SOS-based approaches in the ACSI estimation. Using estimated ACSIs for the channel equalization, simulation results indicate that the SOS-based approaches converge to the FOS-based approach in the high signal-to-noise ratio range.
|Uncontrolled Keywords:||Science & Technology, Technology, Engineering, Electrical & Electronic, Engineering, channel estimation, first-order statistics (FOS), orthogonal frequency-division multiplexing (OFDM), second-order statistics (SOS), SYSTEMS|
|Divisions:||Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research|
|Deposited By:||Mr Adam Field|
|Deposited On:||27 May 2010 15:45|
|Last Modified:||16 Feb 2013 15:18|
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