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Low-Complexity Performance Evaluation of Binary and Quaternary DS-SSMA over Rician Fading Channels via the Characteristic Function Method

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Abstract

This paper presents an efficient and accurate performance evaluation technique for binary and quaternary direct-sequence spread-spectrum multiple-access (DS-SSMA) systems with deterministic signature sequences over Rician fading channels, without resorting to any (e.g. Gaussian) assumptions with respect to the distribution of the multiple-access interference (MAI). The method is based on a reduced-complexity formulation of the characteristic function method. In previous versions of this technique, the characteristic function of the MAI component of the decision statistic was expressed in terms of a double integral over the distributions of phase and delay. The new formulation, developed herein for both binary and quaternary modulation with a correlation receiver, generates a compact expression for the characteristic function of the MAI, eliminates the need for numerical integration over the phase distribution and yields a computational complexity reduction proportional to the spreading gain. This renders the characteristic function method more attractive for application to wideband CDMA systems and by extension, to more complex transceiver structures.

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Authors and Affiliations

  1. INRS Télécommunications (Université du Québec), 16 Place du Commerce, Verdun, Québec, Canada, H3E 1H6

    Dandan Liu & Charles L. Despins

  2. Lucent Technologies Inc., Whippany, NJ, U.S.A

    Dandan Liu

  3. Microcell Connexions Inc., 1250 René-Levesque west, Montréal, Québec, Canada, H4B 4W8

    Charles L. Despins

  4. TR Labs/University of Alberta, 800 Park Plaza, 10611-98 Avenue, Edmonton, Alberta, Canada, T5K 2P7

    Witold A. Krzymien

Authors
  1. Dandan Liu
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  2. Charles L. Despins
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  3. Witold A. Krzymien
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Liu, D., Despins, C.L. & Krzymien, W.A. Low-Complexity Performance Evaluation of Binary and Quaternary DS-SSMA over Rician Fading Channels via the Characteristic Function Method. Wireless Personal Communications 7, 257–273 (1998). https://doi.org/10.1023/A:1008866712744

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