Analysis of Modified Adaptive Forgetting-Factor RLS-based Frequency Domain Equalization

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Suchada Sitjongsataporn
Piyaporn Nurarak


Analysis of a new modified adaptive forgetting-factor algorithm based on the recursive least squares algorithm (RLS) is presented for frequency domain equalization (FDE). By means of mean square deviation approach, an optimal forgetting-factor scheme is proposed by using the optimal gain sequence. A modified adaptive forgetting-factor RLS-based FDE is presented with regard to an optimal forgetting-factor algorithm for orthogonal frequency division multiplexing systems. We present simulation results to compare the proposed algorithm on the basis of its performance and rate of convergence.

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