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Block-type pilot channel estimation for OFDM systems under frequency selective fading channels

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3 Author(s)
Lei Shi ; ICIE institute school of electromechanical engineering, Xi Dian University, Xi'an china 710071 ; Baolong Guo ; Lei Zhao

Orthogonal frequency division multiplexing (OFDM) is one key technology in wireless multimedia communication. In this paper, the performance of channel estimation methods for OFDM systems based on block-type under frequency selective fading channels is discussed. Analysis of a 3G carrier model with 1 MHz bandwidth under frequency selective fading channels is made. The pilot signal estimation based on LS, MMSE, LMMSE (a simplified MMSE algorithm with low-rank approximation using singular value decomposition) criteria, and channel interpolation based on the simple linear interpolation method. Simulation indicates its good anti-multi-path performance and anti-doppler frequency shift ability.

Published in:

Wireless Mobile and Computing (CCWMC 2009), IET International Communication Conference on

Date of Conference:

7-9 Dec. 2009