期刊文献+

差分空时频码字的快速译码方法

Fast decoding algorithm for differential space-time-frequency codes
下载PDF
导出
摘要 最大似然(ML)检测的差分空时频码的传统译码方法的译码复杂度随着星座图点数以及发送信息符号数的增加而迅速增加.对星座图进行划分,提出了一种差分空时频码字的快速译码方法.该方法可以获得与传统ML译码方法相近的性能,即都获得了最大空间-多径分集增益,而译码复杂度却大大降低.仿真分析结果证明了该快速译码算法的高效性. The decoding complexity of conventional differential space-time-frequency codes based on maximumlikelihood (ML) differential detection increases quickly with the number of constellation components and transmitted information symbols. By grouping the constellation, a fast decoding algorithm is proposed. The proposed algorithm provides performance close to that of the ML differential detection, that is, both can achieve maximum space-multipath diversity, but the proposed algorithm offers a lower decoding complexity. Analytical evaluation and corroborating simulations reveal its performance merits.
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2009年第5期940-944,共5页 Journal of Xidian University
基金 "十一五"预研项目资助(11001060404) 国家部委基金资助(51401040703CB0102)
关键词 多输入多输出 空时分组码 差分空时频编码 差分译码 频率选择性衰落信道 空间-多径分集 multiple input multiple output space-time block code differential space-time-frequencycoding differential decoding frequency-selective channel space-multipath diversity
  • 相关文献

参考文献16

  • 1Alamouti S M. A Simple Transmit Diversity Technique for Wireless Communications[J]. IEEE Journal on Selected Areas in Communications, 1998, 16(8): 1451-1458.
  • 2Tarokh V, Seshadri N, Calderbank A R. Space-time Codes for High Data Rate Wireless Communication.. Performance Criterion and Code Construction[J]. IEEE Trans on Information Theory, 1998, 44(2) : 744-765.
  • 3Wang Z, Giannakis G B. Complex-field Coding for OFDM Over Fading Wireless Channels[J]. IEEE Trans on Information Theory, 2003, 49(3): 707-720.
  • 4Zhou S, Giannakis G B. Single-carrier Space-time Block Coded Transmissions Over Frequency-selective Fading Channels[J]. IEEE Trans on Information Theory, 2003, 49(1) : 164-179.
  • 5Akay E, Ayanoglu E. Achieving Full Frequency and Space Diversity in Wireless Systems Via BICM, OFDM, STBC, and Viterbi Decoding[J]. IEEE Trans on Communications, 2006, 54(12): 2164-2172.
  • 6Borgmann M, Bolcskei H. Noncoherent Space-frequency Coded MIMO-OFDM[J]. IEEE Journal on Selected Areas in Communications, 2005, 23(9): 1799-1810.
  • 7Chen Y, Aktas E, Tureli U. Optimal Space-frequency Group Codes for MIMO-OFDM System [J ]. IEEE Trans on Communications, 2006, 54(3):553-562.
  • 8Liu Z Q, Xin Y, Giannakis G B. Space-time-frequency Coded OFDM Over Frequency-selective Fading Channels[J]. IEEE Trans on Signal Processing, 2002, 50(10): 2465-2476.
  • 9Hughes B L. Differential Space-time Modulation[J]. IEEE Trans on Information Theory, 2000, 46(7) : 2567-2578.
  • 10Hochwald B M, Sweldens W. Differential Unitary Space-time Modulation[J]. IEEE Trans on Communications, 2000, 48(12) : 2041-2052.

二级参考文献5

  • 1郭旭东,李颖,白宝明.Turbo-BLAST系统的分组高斯近似迭代检测算法[J].西安电子科技大学学报,2007,34(1):135-139. 被引量:1
  • 2Damen O, Chkeif A, Belfiore J. Lattice Code Decoder for Space-time Codes[J]. IEEE Commun Letters, 2000, 4(5) : 161-163.
  • 3Hochwald M B, BrinK S T. Achieving Near-capacity on a Multiple-antenna Channel[J]. IEEE Trans on Commun, 2003, 51(3): 389-399.
  • 4Jia Y, Andrieu C, Piechocki R J, et al. Gaussian Approximation Based Mixture Reduction for Near Optimum Detection in MIMO System[J]. IEEE Commun Letters, 2005, 9(11): 997-999.
  • 5Stefanov A, Duman T M. Turbo Coded Modulation for Systems with Transmit and Receive Antenna Diversity[C]//IEEE Global Telecommunications Conference. Rio de Janeiro, Brazil: IEEE, 1999: 2336-2340.

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部