LTE和LTE-Advanced系统中CPRI压缩算法研究  

Resrearch on CPRI Compression Algorithm in LTE and LTE-Advanced System

作　　者：郭彬[1] 曹伟[1] 陶安[1] 

机构地区：[1]上海贝尔股份有限公司,上海201106

出　　处：《信息通信技术》2013年第2期64-69,共6页Information and communications Technologies

基　　金：国家重大专项支持基带集中处理的RAN构架研究(2012ZX03003009)

摘　　要：移动互联网新业务促使原有多层分级式通信网络向更扁平化的方向发展,互联互通的网络架构需要增加巨大光纤资源投入。为减少和控制光纤资源消耗,文章提出一种适用于LTE系统的低延时基带信号压缩算法,算法首先通过冗余频谱消除,减少了信号传输占用带宽,然后利用自适应动态范围控制以及分块非线性量化降低单位采样点比特位宽。该算法降低了总传输数据量,从而降低光纤资源的消耗。文中给出了该算法性能仿真分析和实验室系统验证结果。The new business types need the mobile network architecture to be more flat, and the interconnection network architecture needs more investment in fiber connections. In order to reduce and control the fiber resource consumption, this paper presents a low delay baseband signal compression algorithm for LTE system. Firstly, redundancy remove in spectral domain is used to reduce bandwidth of signal, then adaptive amplitude control and block scaling quantization are used to reduce the bit-width. So this algorithm reduces the total amount of transferred data and fiber resource consumption. The performance of the algorithm is analyzed and validated through simulation and laboratory demo system.

关 键 词：通用公共无线接口 压缩 长期演进 I-Net 

分 类 号：TN929.5[电子电信—通信与信息系统] TP301.6[电子电信—信息与通信工程]