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EURASIP Journal on Wireless Communications and Networking
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Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems

EURASIP Journal on Wireless Communications and Networking volume 2008, Article number: 462710 (2008) Cite this article

Abstract

The problem of synchronous multiuser receiver design in the case of direct-sequence single-antenna code division multiple access (DS-CDMA) uplink networks is studied over frequency selective fading channels. An exact expression for the bit error rate (BER) is derived in the case of BPSK signaling. Moreover, an algorithm is proposed for finding the finite impulse response (FIR) receiver filters with block memory such that the exact BER of the active users is minimized. Several properties of the minimum BER FIR filters with block memory are identified. The algorithm performance is found for scenarios with different channel qualities, spreading code lengths, receiver block memory size, near-far effects, and channel mismatch. For the BPSK constellation, the proposed FIR receiver structure with block memory has significant better BER with respect to and near-far resistance than the corresponding minimum mean square error (MMSE) filters with block memory.

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Authors and Affiliations

  1. UNIK - University Graduate Center, University of Oslo, Instituttveien 25, P.O. Box 70, 2027, Kjeller, Norway

    Are Hjørungnes

  2. Alcatel-Lucent Chair on Flexible Radio, École Supérieure d'Électricité, Plateau de Moulon, 3 Rue Joliot-Curie, 91192, Gif-sur-Yvette Cedex, France

    Mérouane Debbah

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  1. Are Hjørungnes
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  2. Mérouane Debbah
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Correspondence to Are Hjørungnes.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Hjørungnes, A., Debbah, M. Minimum BER Receiver Filters with Block Memory for Uplink DS-CDMA Systems. J Wireless Com Network 2008, 462710 (2008). https://doi.org/10.1155/2008/462710

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  • DOI: https://doi.org/10.1155/2008/462710

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