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Analysis of successive interference cancellation in M-ary Orthogonal DS-CDMA system with single path Rayleigh fading

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Mobile Communications Advanced Systems and Components (IZS 1994)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 783))

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Abstract

Compensating for near/far and fading effects is critical for satisfactory performance of DS/CDMA systems. So far, practical systems have used power control to over come fading and near/far effects. Another approach which has a fundamental potential in not only eliminating near/far effects but also in substantially raising the capacity, is the multiuser detectors and interference cancellers. Various optimal and sub-optimal schemes have been investigated. These schemes, however, get too complex even for considerably simple systems. Previously, we analyzed a simple successive interference cancellation scheme for a simple coherent BPSK modulation scheme. We now extend the simple successive interference cancellation scheme to a more complex (robust) modulation scheme, namely, M-ary Orthogonal modulation. We analyze the performance of the successive IC scheme under Rayleigh fading, where the order of cancellation changes as fast as fading (of the order of every 1 ms). The analysis indicates that the successive IC scheme not only increases the mean post-cancellation SNR (signal to noise ratio), but also lowers the coefficient of variation of the SNRs. This translates to lower BER, increased capacity and near far resistance.

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Authors and Affiliations

  1. WINLAB (Wireless Information Networks Laboratory) Rutgers, The State University of New Jersey, P.O.Box 909, 08855-0909, Piscataway, NJ, USA

    Pulin R. Patel & Jack M. Holtzman

Authors
  1. Pulin R. Patel
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  2. Jack M. Holtzman
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Christoph G. Günther

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© 1994 Springer-Verlag Berlin Heidelberg

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Patel, P.R., Holtzman, J.M. (1994). Analysis of successive interference cancellation in M-ary Orthogonal DS-CDMA system with single path Rayleigh fading. In: Günther, C.G. (eds) Mobile Communications Advanced Systems and Components. IZS 1994. Lecture Notes in Computer Science, vol 783. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-57856-0_15

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  • DOI: https://doi.org/10.1007/3-540-57856-0_15

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-57856-7

  • Online ISBN: 978-3-540-48359-5

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