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, cilt.59, sa.5, ss.2610-2614, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 59 Sayı: 5
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1109/tvt.2010.2044520
  • Dergi Adı: IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2610-2614
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.