基于LS码的分布式MIMO-CDMA系统研究  

Research on Distributed MIMO-CDMA Systems Based on LS Code

作　　者：张玉艳[1] 李道本[2] 

机构地区：[1]北京邮电大学网络教育学院,北京100876 [2]北京邮电大学信息工程学院,北京100876

出　　处：《电子测量与仪器学报》2008年第2期37-41,共5页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金项目(编号:90604035)

摘　　要：研究了基于LS码的分布式MIMO-CDMA系统结构,提出了广义的分布式MIMO系统的信道模型,给出了采用MIMO技术时发射机和接收机的结构。最后以单小区双天线的三基站收发端分布式网络为例,仿真了不同的扩频序列、基站收发端的数目和多天线与系统性能的相互关系。结果表明使用LS码扩频的分布式MIMO-CDMA系统性能比使用Walsh码扩频的MIMO-CDMA系统性能优越,基站收发端或移动台采用多天线时的性能优于单天线。This paper proposes a distributed MIMO-CDMA structure with LS code. Under the initial assumption of independent degradations to the ends of base station transceiver and mobile unit antenna, a channel model for distributed MIMO-CDMA is developed, and furthermore the structures of transmitter and receiver with multi-antennas are given. A double antenna, single cell wireless network adopting MIMO system is used as example to simulate the relationship between different spread spectrum sequences, quantity of base station transceivers, multi-antenna system and the system performance. Simulation results show that the system performance of the distributed MIMO-CDMA structure with LS code is superior to that of MIMO-CDMA structure with Walsh code. For base station transceivers and mobile, adopting multi-antennas is superior to adopting single antenna.

关 键 词：分布式MIMO-CDMA 基站收发端 扩频码 

分 类 号：TN911.22[电子电信—通信与信息系统]