计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (32): 101-104.

• 网络、通信与安全 • 上一篇    下一篇

时间选择性衰落信道下的空时多普勒编码

蔚 娜1,2,杨莘元1,李铁成2,杨 杰1   

  1. 1.哈尔滨工程大学 信息与通信工程学院,哈尔滨 150001
    2.中国电波传播研究所,山东 青岛 266107
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-11 发布日期:2007-11-11
  • 通讯作者: 蔚 娜

Space-time-doppler codes for time-selective fading channels

WEI Na1,2,YANG Xin-yuan1,LI Tie-cheng2,YANG Jie1   

  1. 1.College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China
    2.China Research Institute of Radiowave Propagation,Qingdao,Shandong 266107,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-11-11 Published:2007-11-11
  • Contact: WEI Na

摘要: 利用分层的代数方法,提出了一种新型的应用于时间选择性平坦衰落信道下的多输入多输出系统的空时多普勒码字,该码字能在符号速率达到Nt的情况下同时获得最大分集增益NtNrNb(Q+1),也就是发送天线数Nt、接收天线数Nr、编码符号块的数目Nb以及信道复指数基的个数(Q+1)的乘积。仿真结果表明,与已有空时多普勒码字相比,所设计的码字可以获得更高的分集增益。

Abstract: Relying on a layered algebraic design,we derive a new Space-Time-Doppler(STD) code for Multiple Input Multiple Output(MIMO) time-selective fading channels.The proposed STD code achieves rate Nt and enables full-diversity NtNrNb(Q+1),i.e.,the product of the number of transmit antennas Nt,receive antennas Nr,coding blocks Nb and channel complex exponential bases(Q+1).Simulation results show that the proposed STD codes achieve higher diversity gain in time-selective channels than some existing STD codes.