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

摘要

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.