智能天线在无线通信中的应用分析

为了在复杂的电磁传播环境中保证信号传输的可靠性，智能天线技术逐渐得到人们的广泛关注。智能天线的概念使得天线从传统的单一场路转换器件发展成具有一定信号处理功能，并和接收机后端处理紧密结合的天线系统。本文介绍并分析了传统自适应天线及空时二维信号处理技术在蜂窝系统中的应用，对用于时分多址系统的自适应波束形成器及用于码分多址系统的2D RAKE进行了仿真，并通过仿真说明了基于空时二维处理的智能天线系统在性能上的优越性。

Smart Antenna for Wireless Communication

To ensure the reliability of communication in adverse environments, smart antenna has received intense attention. Smart antenna has changed the role of antenna from the simple circuit_field interconvertor to a complicate system that has integrated function of signal processing. This paper introduces and analyzes the applications of conventional adaptive arrays and spatial_temporal processing in wireless communication. We analyze the performance of adaptive beamformer in TDMA system and 2D RAKE used in CDMA through simulation. Through simulation, we demonstrate the superiority of smart antenna which is based on spatial_temporal processing.