北京邮电大学学报

  • EI核心期刊

北京邮电大学学报

• 学术论文 •    下一篇

基于空时分组码的Pre-RAKE算法

    

  1. 北京邮电大学 电信工程学院 , 北京 100876 
  • 基金资助:
     “国家 863”项目资助 ( 2001AA121031) 

Pre-RAKE Algorithm Based on Space Time Block Coding

    

  1. Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Supported by:
     

摘要: 为克服无线传输中多径衰落效应以及简化接收机的设计 ,针对 TDD CDMA的特点 ,提出了将 Pre-RAKE技术与空时分组码 STBC(space time block code)结合的方法 ,并进行了理论分析和仿真 ,研究了移动速度对误码率 BER性能的影响 ,结果证明了 Pre-RAKE可以显著地提高 STBC在多径衰落下的 BER性能 ,而与 RAKE方案相比 ,性能差别不大.

关键词:

Abstract: An enhanced STBC algorithm by Pre-Rake technique is proposed for the time-division duplex (TDD) CDMA system. By theoretical analysis and simulation, the new algorithm achieves both transmit diversity gain and multipath diversity gain. Further more, Pre-RAKE simplifies the receiver of mobile unit, it also reduce the multiple-access interference. The effects of vehicular speed are also presented in the paper. Simulation results show that Pre-RAKE scheme gives a close performance to the RAKE combiner.

Key words:

中图分类号: