WCDMA中一种利用查表LMS算法的自适应阵  

An Adaptive Antenna Array Using Query-LMS Algorithm in WCDMA Systems

作　　者：邢明[1] 王明飞[1] 贾明利[1] 

机构地区：[1]解放军信息工程大学,河南郑州450002

出　　处：《电讯技术》2005年第4期141-144,共4页Telecommunication Engineering

摘　　要：本文针对WCDMA中上行链路存在导频信道的特点,并结合变步长LMS算法的优点,提出了一种查表LMS波束形成算法。该算法利用导频信号作为空间波束形成的参考信号,把误差范围和相应的步长存储到列表中,在进行波束形成时所要采用的迭代步长直接在列表中查取。该算法的实现复杂度低,收敛速度快,运算量小。In WCDMA systems, pilot symbols are adopted in uplink channels. According to this feature and the advantage of LMS algorithm, a Query - LMS algorithm is proposed. In this algorithm, the pilot symbols are used to act as reference signal of beamforming. The range of error and the corresponding steps are stored in a table together. The steps which the algorithm needs are queried directly in the table . The complexity of adaptive array is reduced by using pilot symbols and this algorithm. The performance of receiver can be improved because of the application of this array .

关 键 词：宽带码分多址 自适应天线阵 导频 波束形成 

分 类 号：TN914.53[电子电信—通信与信息系统]