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智能天线是SCDMA无线用户环路系统的核心技术之一。此技术起源于高分辨雷达和电子战的军事技术。但由于造价昂贵、实现复杂、技术不够成熟,长期无法民用。不过,随着无线通信需求量指数式的增长,半导体微电子技术的快速发展,元器件性能价格比的大幅度增加,智能天线的商用目前已成为可能。 智能天线系统不同于普通无线通信系统之处是多很天线组成的天线阵列以及多个射频收发信机、硬件及先进的数字信号处理软件。智能天线的原理是利用各个无线用户的空间特性差异来成倍提高系统容量。用智能天
Smart antenna is one of the core technologies of SCDMA wireless subscriber loop system. This technology originated in the military technology of high-resolution radar and electronic warfare. However, due to the high cost, complex realization, the technology is not mature enough and can not be used for a long time. However, with the exponential growth of the demand for wireless communications, the rapid development of semiconductor microelectronics technology, a substantial increase in component cost performance, the commercialization of smart antennas has now become possible. Smart antenna system is different from ordinary wireless communication system is a very antenna array antenna and a number of radio frequency transceivers, hardware and advanced digital signal processing software. The principle of smart antenna is to make use of the spatial characteristics of different wireless users to multiply the system capacity. Use smart days