北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2006, Vol. 29 ›› Issue (6): 120-124.doi: 10.13190/jbupt.200606.120.dujh

• 研究报告 • 上一篇    下一篇

TDD-HSDPA系统AMC与HARQ融合机制

堵久辉, 陈书平, 王文博   

  1. 北京邮电大学 电信工程学院, 北京 100876
  • 收稿日期:2005-12-20 修回日期:1900-01-01 出版日期:2006-12-30 发布日期:2006-12-30
  • 通讯作者: 堵久辉

A Novel Integration Mechanism of AMC and HARQ in TDD-HSDPA Systems

DU Jiu-hui, CHEN Shu-ping, WANG Wen-bo   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2005-12-20 Revised:1900-01-01 Online:2006-12-30 Published:2006-12-30
  • Contact: DU Jiu-hui

摘要:

对自动重传请求(HARQ)技术在时分双工、高速下行分组接入(TDD-HSDPA)系统中,特别是在采用了智能天线后遇到的一些特定问题进行了分析,提出了一种自适应编码与调制(AMC)和HARQ的融合方案。通过基于OPNET仿真软件搭建的系统仿真器,对算法进行了仿真研究,仿真结果表明,该方案可显著改善数据传输的可靠性,并能小幅度提升系统吞吐量。

关键词: 高速下行分组接入, 混合自动重传请求, 自适应调制编码, 智能天线

Abstract:

Unique problems that hybrid automatic repeat request (HARQ) encounter in Time Division Duplex- high speed downlink packet access (TDD-HSDPA) systems are analyzed, especially when smart antennas are introduced. Accordingly, a novel mechanism combining HARQ with adaptive modulation and coding (AMC) is proposed. Dynamic system level simulator based on OPNET software is established to investigate the performance gain of the mechanism. Simulation results indicate that the scheme can reduce system block error rate (BLER) significantly and enhance system throughput.

Key words: high speed downlink packet access , hybrid automatic repeat request , adaptive modulation and coding , smart antennas

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