基于千兆以太网的基带光纤拉远设计  

Design of baseband optical pulls distant based on Gigabit

作　　者：徐晓明 赵清潇 

机构地区：[1]山东泉清通信有限责任公司,山东济南250101

出　　处：《电子设计工程》2010年第6期113-115,共3页Electronic Design Engineering

摘　　要：基带光纤拉远技术相比传统的射频、中频拉远技术,在馈线处理、站址选择等方面具有明显的优势,已经成为TD-SCDMA等3G网络的主要拉远方式。参照3G网络的基带光纤拉远技术,提出一种适用于数字微波接力系统的基带光纤拉远的接口方案,采用高性能千兆以太网物理层芯片88E1111和1.25G光收发器SSFF3151完成基带接口,使基带信号可以通过数字光纤传输技术传到远端,并恢复射频信号。介绍了88E1111的工作原理、性能、接口等,并给出硬件电路设计的原理,以及各部分的具体实现方法和原理图。方案在稳定性和误码率方面完全满足基带信号的传输要求,可应用于各种数字微波接力系统。Compared with the traditional RF and IF pulls distant technology, the baseband optical pulls distant technology has some obvious superiority,especially in feeder line processing and choice of station site, it has become the main pulls distant technology in 3G network such as TD-SCDMA.Refering to the baseband optical pulls distant technology in 3G network,the paper proposes a scheme which is suitable for the digital microwave relay system.The design uses high performance Gigabit chip 88E1111 and 1.25G optical transceiver SSFF3151 to compelete the baseband interface.The signal transmits to the remote through the digital fiber,and restores the radio-frequency signal.This paper introduces 88E1111＇s principle, performance, interface, the hardware circuit design principles, as well as part of the concrete implementation and schematic diagrams.The scheme satisfies the baseband transmision in the stability and the error rate aspect.It can be used in kinds of digital microwave relay systems.

关 键 词：基带光纤拉远 千兆以太网 88E1111 数字微波接力系统 

分 类 号：TN925.91[电子电信—通信与信息系统]