Max-min weighted SIR for MIMO downlink system: Optimality and algorithms

Desmond W.H. Cai, Tony Q.S. Quek, Chee Wei Tan

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

Designing fast algorithms that adapt the transmit and receive power and beamformers to optimize performance for different users is important in wireless MIMO downlink systems. This paper studies the max-min weighted SIR problem in the downlink, where multiple users are weighted according to priority and are subject to a total power constraint. The difficulty of this nonconvex problem is compounded by the coupling in the transmit and receive beamformers, thereby making it hard to optimize in a distributed fashion. We first show that this problem can be optimally and efficiently computed using a fast algorithm when the channels are rank-one. The optimal transmit and receive power and beamformers are also derived analytically. We then exploit the MIMO uplink-downlink duality to adapt our algorithm to compute a local optimal solution for channels with general rank.

原文English
主出版物標題2010 IEEE International Symposium on Information Theory, ISIT 2010 - Proceedings
頁面2118-2122
頁數5
DOIs
出版狀態Published - 2010
事件2010 IEEE International Symposium on Information Theory, ISIT 2010 - Austin, TX, United States
持續時間: 2010 6月 132010 6月 18

出版系列

名字IEEE International Symposium on Information Theory - Proceedings
ISSN(列印)2157-8103

Conference

Conference2010 IEEE International Symposium on Information Theory, ISIT 2010
國家/地區United States
城市Austin, TX
期間10-06-1310-06-18

All Science Journal Classification (ASJC) codes

  • 理論電腦科學
  • 資訊系統
  • 建模與模擬
  • 應用數學

指紋

深入研究「Max-min weighted SIR for MIMO downlink system: Optimality and algorithms」主題。共同形成了獨特的指紋。

引用此