无线通信系统射频延时器的设计与实现  

Design and Implementation of Wireless Communications System RF Delayer

作　　者：杨娟[1] 胡兵[1] 沈翰宁[1] 

机构地区：[1]桂林电子科技大学,广西桂林541004

出　　处：《电视技术》2012年第7期35-37,48,共4页Video Engineering

摘　　要：在无线通信设备中,射频接收端经常需要接收来自不同传输网络的数据,由于数据传输链路的差异,将导致数据间产生严重的相互干扰,从而造成数据处理失真。为了解决这一问题,通常采用模拟延时器对不同传输网络的数据进行时延调整以达到射频同步接收,但是模拟延时器往往延时精度低,处理速度慢,工程造价高。针对此问题,提出了一种新型的射频延时器,它采用模数结合数字处理的方式,实现数据的同步接收,避免了时延差所造成的数据处理失真等问题,测试结果表明射频延时器工作稳定,数据处理速度快,精度可达纳秒级,满足系统设计要求。In wireless communication system, RF receiver always need to receive datas transported from different transmission networks. Due to the differences of data transmission links, the datas is interfere each other. In order to resolve this problem, simulation delayer is used in system receiver. But processing rate of the simulation delayer is slow, and the precision is low. Aim to this problem, a digital-analogy RF delayer is proposed,in order to avoid the distortion caused by the datas arriving at different times. The test result shows that the network delayer work stably, datas processing rate can get very high. The system delay precision meets the demand of system design.

关 键 词：射频延时 同步动态随机存储器控制器 异步先入先出缓存器 FPGA 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]