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引用本文：

邢明,王明飞,贾明利.WCDMA中一种利用查表LMS算法的自适应阵[J].电讯技术，2005，45（4）：141 - 144. [点击复制]
.An Adaptive Antenna Array Using Query-LMS Algorithm in WCDMA Systems[J].，2005，45（4）：141 - 144. [点击复制]

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WCDMA中一种利用查表LMS算法的自适应阵

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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。

关键词: 宽带码分多址自适应天线阵导频波束形成

DOI：10.3969/j.issn.1001-893X.

投稿时间：2004-09-08

基金项目:

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

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Abstract:

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 .

Key words: WCDMA,Adpative array,Pilot symbols,Beamforming