多輸入多輸出天線蜂窩系統(tǒng)中的分布式功率控制方法

趙昆; 邱玲; 朱近康

多輸入多輸出天線蜂窩系統(tǒng)中的分布式功率控制方法

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出版歷程
- 收稿日期: 2004-06-07
- 修回日期: 2004-09-17
- 刊出日期: 2005-11-19

Distributed Power Control in MIMO Cellular System

摘要

摘要: 在蜂窩無線通信系統(tǒng)設計中，基于信號干擾比(SIR)測量的功率控制方法得到廣泛的應用。該文提出多輸入多輸出(MIMO)天線蜂窩系統(tǒng)中的基于SIR測量的分布式功率控制(DPC)方法。該方法通過控制移動臺或者基站的發(fā)射功率可以達到以下兩個目標的其中之一：(1)最小化所有基站或者移動臺的平均接收SIR中斷概率；(2)在滿足目標SIR要求的前提下最小化平均發(fā)射功率。數(shù)值仿真結(jié)果顯示，該文提出的DPC方法在低的計算復雜度下，可以達到降低SIR中斷概率和減小發(fā)射功率的目的。
- 多輸入多輸出;信號干擾比;分布式功率控制;中斷概率;發(fā)射功率
Abstract: In the design of cellular radio systems, power control methods based on signal-to-interference ratio (SIR) measurement have been used widely. This paper proposes distributed power control (DPC) methods based on SIR measurement in Multiple-Input Multiple-Output (MIMO) antenna cellular systems. The methods control the transmitter power of mobile stations or base stations with one of the following two objectives: (1) to minimize the averaged SIR outage probability over all base stations or mobile stations and (2) to minimize the averaged transmitter power while satisfying the specified SIR requirements for all links. Numerical study shows that the DPC methods proposed in this paper can effectively lower SIR outage probability and transmitter power at low computation complexity.

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參考文獻(1)

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