標題: Achieving Large Sum Rate and Good Fairness in MISO Broadcast Communication
作者: Huang, Ji-You
Lu, Hsiao-Feng
電機工程學系
電信工程研究所
Department of Electrical and Computer Engineering
Institute of Communications Engineering
關鍵字: Broadcast communication;MISO;dirty paper coding;zero-forcing beamforming;fairness
公開日期: 1-Jun-2019
摘要: Atradeoff between sum rate and fairness for multiple-input single-output (MISO) broadcast communication employing dirty paper coding or zero-forcing dirty paper coding at physical layer is investigated in this paper. The tradeoff is based on a new design objective termed "tri-stage" approach as well as a new l(1)-based fairness measure that is much more robust than the well-known Jain's index for comparing fairness levels achieved by various design objectives at a much finer resolution in high SNR regime. The newly proposed tri-stage design also introduces a new concept of statistical power allocation that randomly allocates power to users based on an optimal probability distribution derived from the tradeoff between sum rate and fairness. Simulation results show that the proposed approach can simultaneously achieve a larger sum rate and better fairness than the reputable proportional fairness criterion. A performance upper bound is also given in the paper to show the excellent performance of the proposed approach at moderate and high SNR regimes as well as some potential for further improvement in low SNR regime.
URI: http://dx.doi.org/10.1109/TVT.2019.2908167
http://hdl.handle.net/11536/152195
ISSN: 0018-9545
DOI: 10.1109/TVT.2019.2908167
期刊: IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Volume: 68
Issue: 6
起始頁: 5684
結束頁: 5695
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