A realistic performance analysis for practical channel-aware scheduling

It is well-known that opportunistic transmission schemes are sumcapacity optimal, in the Shannon sense, for symmetric cellular networks with single-antenna transceivers. However, for a practical system operating at non-negligible error probability, the correctly delivered throughput (or spectral efficiency) is a more useful figureof-merit. In this paper, we present a mathematical model for the average throughput of a practical wireless system with channel-aware user scheduling in a symmetric Rayleigh fading cellular system. By employing an accurate model for the block error probability with turbo coding, and accounting for channel estimation errors, channel feedback quantization, and feedback delay, we present closedform expressions for the average spectral efficiency of the downlink scheduler.

• Type: Conference
• Year: 2008
• Where: ICASSP
• Authors: Pengcheng Zhan, Ramesh Annavajjala, A. Lee Swindlehurst, Todd Chauvin
• Keywords: Error Probability, ICASSP 2008, Signal Processing, Spectral Efficiency, Symmetric Cellular Networks