摘要
多天线MIMO系统利用多个收、发天线有效地改善无线通信系统性能,提高系统容量,增强系统可靠性。然而使用多个射频的MIMO系统增加了天线的体积、功率和硬件,从而增加了成本。天线选择是一种低成本、低复杂度的有效方法,可以利用多天线系统的多数优点。使用天线选择技术可以降低系统成本和复杂度,同时保留MIMO系统的优越性能。文中考虑了天线选择系统的一些实际应用问题,RF预处理,训练序列等的实际应用。最后,给出了一些天线选择的结论。
Multiple antenna（MIMO） wireless systems , which use multiple antenna elements at both the transmitter and receiver, can improve the capacity and reliability of wireless communication, However, the multiple RF chains associated with it are costly in terms of size , power and hardware. Antenna selection is a low-cost low-complexlty alternative to maintain many of the advantages of MIM0 systems. This paper considers a number of the practical issues in the implementation of such systems, such as RF preprocessing, training sequence, and so on. Finally, some conclusions about antenna selection are presented.
出处
《信息技术》
2008年第4期48-51,55,共5页
Information Technology
