CDMA移动通信系统中的联合功率控制与多用户检测

Combined Power Control and Multiuser Detection in CDMA Systems

功率控制和多用户检测是CDMA移动通信系统中克服远近效应、抑制多址干扰(MAI)的两项关键技术。这里简要介绍了CDMA移动通信系统中功率控制与多用户检测技术,阐述了联合功率控制与多用户检测技术的基本概念,重点综述了联合功率控制与线性多用户检测技术以及联合功率控制与非线性多用户检测技术的研究进展,并对今后的研究方向进行了概括性的描述。

Power control and multiuser detection are two ways to cope w ith the multiple access interference (MAI) and near-far effect. This paper surv eys the research on combined power control and multiuser detection in CDMA syste ms. First of all, some basic concepts are reviewed. Then the idea of combined po wer control and multiuser detection is introduced. The focus is put on reviewing the research on combined power control and linear or nonlinear multiuser detect ion. Finally, a conclusion is drawn and a general description to the future rese arch direction is given.