A Wavelets Network Interpolation Algorithm for OFDM Channel Estimation Systems

Haiyuan LIU  Taiyi ZHANG  Ruiping ZHANG  Feng LIU  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.2   pp.520-525
Publication Date: 2005/02/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.2.520
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
channel estimation,  OFDM,  wavelets,  network interpolation,  

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For the performance deficiency of the pilot symbol aided channel estimation in orthogonal frequency division multiplexing (OFDM) systems, the wavelets network interpolation channel estimator is proposed. By contrast with conventional methods, wavelets network interpolation channel estimator can guarantee the high transmission rate and lower Bit error rates (BER). Computer simulation results demonstrate that the proposed channel estimation method exhibit an improved performance compared to the conventional linear channel estimation methods and is robust to fading rate, especially in fast fading channels.