Genetic Algorithm Based Frequency Domain Equalization for DS-UWB Systems Without Guard Interval

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Executive Summary

In this paper, a Genetic Algorithm (GA) based Frequency Domain Equalization (FDE) scheme referred to as FDE-GA, which does not require any Guard Interval (GI), is proposed for Direct Sequence-Ultra WideBand (DS-UWB) wireless communication systems and is shown to significantly outperform the RAKE receiver. The proposed FDE-GA receiver also has a dramatic complexity reduction over the previous RAKE-GA receiver, while achieving a comparable Bit Error Rate (BER) performance. The FDE-GA structure achieves a much higher bandwidth efficiency than conventional FDE methods, because the Inter-Block-Interference (IBI), as a result of the absence of the GI, is removed effectively within each block before the GA.

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