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DFT-based PSA channel estimation using linear prediction for OFDM systems with virtual carriers

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5 Author(s)
Jeong-Wook Seo ; Korea Electron. Technol. Inst., Kyunggi-Do, South Korea ; Jung-Wook Wee ; Yong-Suk Park ; Jong-Ho Paik
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This paper proposes an improved discrete Fourier transform-based and pilot-symbol-aided channel estimation (DFT-based PSA CE) for coherent orthogonal frequency division multiplexing (OFDM) systems. Conventional DFT-based PSA CE suffers from the dispersive distortion of an estimated channel impulse response (CIR) caused by virtual carriers. The proposed method estimates an equal-spaced channel frequency response (CFR) in a virtual carrier region by using forward and backward linear prediction (FBLP). Simulation results show that the proposed method outperforms the conventional one with slightly increased complexity and provides a performance similar to the frequency domain linear minimum mean square error (LMMSE) channel estimation with significantly reduced complexity.

Published in:

2005 IEEE 61st Vehicular Technology Conference  (Volume:1 )

Date of Conference:

30 May-1 June 2005