未校准天线阵列对其覆盖性能的影响分析

摘要

Array antenna is the key technology of TD-SCDMA,LTE,LTE-A and future mobile communica-tion systems for its excellent spatial multiplexing and diversity characteristics. However,the imperfect spac-ing and phase jitter of antenna array would easily result in direction deviation of main lobe of the signal beam,and cause unnecessary interference while narrowing the effective coverage. This article disusses the influence of imperfect antenna array element spacing and loaded signal vector phase deviation on the cover-age performance. This is of great importance to the system planning and deployment of multi-user networks in the future.%阵列天线以其良好的空间复用与分集特性，成为TD-SCDMA、LTE、LTE-A以及后续移动通信系统标准的关键技术。然而，由于天线阵列位置偏差以及相位抖动，极易带来有效信号波束主瓣指向的偏差，在缩小有效覆盖的同时，带来不必要的干扰。分析天线阵元间距变化与所加载信号矢量相位偏差对覆盖性能的影响，对于未来多用户系统网络规划与布设具有重要的指导意义。