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Tradeoffs of Source Coding, Channel Coding and Spreading in Frequency Selective Rayleigh Fading Channels

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Abstract

This paper investigates the tradeoffs of source coding, channel coding and spreading in CDMA systems. We consider a system consisting of an image source coder, a convolutional channel coder, an interleaver, and a direct sequence spreading module. With different allocations of bandwidth to source coding, channel coding and spreading, the system is analyzed over a frequency selective Rayleigh fading channel. The performance of the system is evaluated using the cumulative distribution function of peak signal-to-noise ratio. Tradeoffs of different components of the system are determined through simulations. We show that, for a given bandwidth, an optimal allocation of that bandwidth can be found. Tradeoffs among the parameters allow us to tune the system performance to specific requirements.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0407, USA

    Qinghua Zhao, Pamela Cosman & Laurence B. Milstein

Authors
  1. Qinghua Zhao
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  2. Pamela Cosman
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  3. Laurence B. Milstein
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Zhao, Q., Cosman, P. & Milstein, L.B. Tradeoffs of Source Coding, Channel Coding and Spreading in Frequency Selective Rayleigh Fading Channels. The Journal of VLSI Signal Processing-Systems for Signal, Image, and Video Technology 30, 7–20 (2002). https://doi.org/10.1023/A:1014034506244

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