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A frequency domain equalization algorithm for fast time-varying fading channels

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3 Author(s)
Le-Nam Tran ; School of Electronics and Information, Kyung Hee University, South Korea ; Hong, Een-Kee ; Liu, Huaping

Conventional frequency domain equalization (FDE) schemes were originally devised for quasi-static channels. Thus, such equalization schemes could suffer from significant performance degradation in fast-fading channels. This paper proposes a frequency domain equalization algorithm to mitigate the effect of fast time-varying fading. First, a mathematical expression is derived to quantify the total interference resulting from the time variation of the channel. Then, the proposed approach attempts to eliminate the effect of time-variations of the channel. This cancellation allows efficient use of the classical FDE structures in fast time-varying fading environments, although they are built upon the quasi-static channel model. Simulation results of bit-error-rate performance are provided to demonstrate the effectiveness of the proposed algorithm.

Published in:

Communications and Networks, Journal of  (Volume:11 ,  Issue: 5 )