无线通信系统中的抗干扰技术

Anti-Interference Technology of Wireless Communication System

为了确保信息交流的安全性产生了各种抗干扰方法。文中详细介绍了无线通信系统中的同频干扰、邻频干扰以及互调干扰,指出了它们产生的原因和解决方法;分析了几种典型和新型的抗干扰方法,包括MIMO技术、FHSS技术、智能天线技术、认知无线电技术以及混合抗干扰技术。其中,通过香浓公式说明了MIMO技术和FHSS技术可以提高系统容量和抗干扰能力;最后,阐述了无线通信系统抗干扰的发展趋势。

In order to protect the safety of information exchange , nowadays, it came up a lot of anti-interference meth- ods. This article introduced in detail the same frequency interference, the adjacent frequency interference and the intermod- ulation interference of the wireless communication system. And it pointed out the cause of these interferences and the meth- ods to solve them. Then, this article analyzed a series of typical and advanced anti-interferences methods, including the MI- MO technology, the FHSS technology, the smart antenna technology, the cognitive radio technology and the hybrid anti- interference technology. Among these methods, the aromatic formula showed the MIMO technology and the FHSS technol- ogy can improve system capacity and the ability of anti-interference. Finally, the article expounded the development trend o{ the anti-interference of the wireless communication system.