多天线OFDM系统空时频分组码的性能分析

武刚, 张雷, 唐友喜, 李少谦

武刚, 张雷, 唐友喜, 李少谦. 多天线OFDM系统空时频分组码的性能分析[J]. 电子科技大学学报, 2003, 32(5): 485-489.
引用本文: 武刚, 张雷, 唐友喜, 李少谦. 多天线OFDM系统空时频分组码的性能分析[J]. 电子科技大学学报, 2003, 32(5): 485-489.
Wu Gang, Zhang Lei, Tang Youxi, Li Shaoqian. Performance of Space-Time-Frequency Block Codes in Multiple-Antenna OFDM Systems[J]. Journal of University of Electronic Science and Technology of China, 2003, 32(5): 485-489.
Citation: Wu Gang, Zhang Lei, Tang Youxi, Li Shaoqian. Performance of Space-Time-Frequency Block Codes in Multiple-Antenna OFDM Systems[J]. Journal of University of Electronic Science and Technology of China, 2003, 32(5): 485-489.

多天线OFDM系统空时频分组码的性能分析

基金项目: 

国家863计划资助项目,编号:2001AA123013

详细信息
    作者简介:

    武刚 男 28岁 博士生 主要从事无线通信MIMO技术方面的研究

  • 中图分类号: TN957

Performance of Space-Time-Frequency Block Codes in Multiple-Antenna OFDM Systems

  • 摘要: 针对多天线正交频分复用系统空时频分组码,通过分析其成对错误概率的Chernoff边界,揭示了多径时延特征影响空时频分组码性能的根本原因,给出了在快衰落信道中空时频分组码设计方法。并在ITU-R M.1225建议的车载信道模型下,利用仿真评估了空时分组码、空频分组码和空时频分组码在快衰落信道中的性能。仿真结果表明,在快衰落信道中,空频分组码性能优于空时分组码;多径时延特征是设计适合快衰落信道中具有最大分集增益空时频分组码的关键因素。
    Abstract: Union upper bound of pairwise-error-probability (PEP) for space-time/frequency block codes in multiple-antenna based orthogonal frequency-division multiplexing (OFDM) systems is derived. And new design considerations were revealed. Then performance comparison between space-frequency block (SFBC) codes, space-time block codes (STBC) and space-time-frequency block codes (STFBC)is performed at different throughput by link-level simulations. The results show that SFBC is superior to STBC in fast fading channel. And power-delay profile of fading channel should be considered for designs of space-time-frequency codes as well as channel orders. SFBC with 4 transmit antenna is robust to both vehicular A and B channel environment of ITU-R M.1225.
计量
  • 文章访问数:  5046
  • HTML全文浏览量:  197
  • PDF下载量:  67
  • 被引次数: 0
出版历程
  • 收稿日期:  2003-08-28
  • 刊出日期:  2003-10-14

目录

    /

    返回文章
    返回