A Feedback Quantization Scheme Leveraging Fairness and Throughput for Heterogeneous Multi-User Diversity Systems


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SOYDAN Y., CANDAN Ç.

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, vol.59, no.5, pp.2610-2614, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 59 Issue: 5
  • Publication Date: 2010
  • Doi Number: 10.1109/tvt.2010.2044520
  • Title of Journal : IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
  • Page Numbers: pp.2610-2614

Abstract

We propose a feedback quantization scheme for downlink multiuser diversity systems. The scheme is designed for heterogeneous users, i.e., users operating under different levels of mean signal-to-noise ratios (SNRs). The proposed scheme equally distributes the channel access time to user clusters and, at the same time, maximizes the sum-rate capacity under equal-channel-access-time constraint. The method is compared to a normalized SNR scheduler, full-feedback scheduler, and finite-rate feedback scheduler without fairness consideration to illustrate the performance gaps between different modes of operation.