Adaptive Equalizer for DS-CDMA Multi-User Communication System Using Sign-Algorithm Based on Laguerre Filter Structure

P. Sirithummachak; C. Benjangkaprasert

doi:10.4028/www.scientific.net/AMM.548-549.1231

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 548-549Adaptive Equalizer for DS-CDMA Multi-User...

Adaptive Equalizer for DS-CDMA Multi-User Communication System Using Sign-Algorithm Based on Laguerre Filter Structure

Abstract:

This paper proposes a sign-algorithm based on adaptive Laguerre filter structure for improving the performance of the direct sequence-code division multiple access (DS-CDMA) communication system. The proposed adaptive equalizer employs a combination of sign and least mean square (LMS) algorithms to minimizing the effect of inter-symbol interference (ISI) that arises due to multipath propagation, and the computational complexity of equalizer. The performance of proposed equalizer was compared with traditional equalizers such as LMS and RLS algorithms in terms of varying path. The function detail and performance results of the proposed equalizer are described by computer simulations in terms of the bit error rate (BER).

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Periodical:

Applied Mechanics and Materials (Volumes 548-549)

Pages:

1231-1234

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.548-549.1231

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Online since:

April 2014

Authors:

P. Sirithummachak, C. Benjangkaprasert

Keywords:

Adaptive Equalizer, DS-CDMA, LM Algorithm, RLS Algorithm

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References

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