On Sum-Rate and Fairness of MIMO Downlink Communications

Hsiao Feng Francis Lu*

*此作品的通信作者

研究成果: Conference contribution同行評審

摘要

The tradeoff between sum-rate and fairness for MIMO downlink communications employing dirty paper coding (DPC) is investigated in this paper. More specifically, we first apply the luml1 -norm fairness measure to formulate the tradeoff as a certain optimization problem, which is unfortunately nonconvex and cannot be efficiently solved. To overcome the difficulty, we make use of the uplink-downlink duality to transform the problem back and forth between uplink and downlink communications. An efficient, iterative waterfilling based algorithm is then provided to yield achievable points on the sum rate-fairness tradeoff. Simulation results show surprisingly that the proposed DPC-based approach offers a significant gain in the achievable sum-rates for a wide range of fairness values, when compared to successive zero-forcing DPC-based coding schemes.

原文English
主出版物標題2021 IEEE 94th Vehicular Technology Conference, VTC 2021-Fall - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781665413688
DOIs
出版狀態Published - 2021
事件94th IEEE Vehicular Technology Conference, VTC 2021-Fall - Virtual, Online, United States
持續時間: 27 9月 202130 9月 2021

出版系列

名字IEEE Vehicular Technology Conference
2021-September
ISSN(列印)1550-2252

Conference

Conference94th IEEE Vehicular Technology Conference, VTC 2021-Fall
國家/地區United States
城市Virtual, Online
期間27/09/2130/09/21

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