一种改进的自适应数字波束形成技术

智能天线技术是移动通信中的关键技术之一。在智能天线中需要确定估计阵元之间的组合权值以尽可能地抑制干扰,增大输出信号的信干噪比,提高系统的性能。本文充分利用DS-CDMA系统中信号波形的统计特性,给出一种新的估计算法,提高组合权值的求解精度,仿真结果证明了方法的有效性。

An Improvement on Adaptive Data Beamforming Technique

Intelligent Antenna technique has been one of key technologies of mobile communication. Using the technique the mixing vector of array elements must be exactly estimated so as to eliminate the interference user as possible, increase the signal to noise and interference ratio of the output signal and improve detection precision of the system. In this paper the statistical property of the waveform used in DS-CDMA system is fully used and a new estimate method is present, which make the mixing vector more precise. Simulations confirm superior capability of the proposed method.