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空时分组码的多径译码方法 被引量：1

Multipath Space-Time Block Decoding Method in CDMA System
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摘要 为有效地将空时分组码应用到多径衰落环境下的码分多址系统,以充分利用多个路径的信号能量,提出了一种多径环境下空时分组码译码的新方法。由于空时分组码译码与信道估计紧密相关,本文亦讨论了多径信道估计以及信道估计误差对本方法的影响。仿真结果表明,采用多路径译码方法可明显提高系统的误码率性能。 For applying STBC（Space-Time Block Codes） to CDMA（Code Division Multiple Access） system in the multipath fading environment effectively, a method of multipath space-time block decoding is presented to collect the multipath signal energy adequately. Because the scheme of space-time block decoding is correlated with channel parameters, channel estimation with multipath delay is also discussed, and the deterioration of the BER（Bit Error Ratio）, caused by the tolerance of channel estimation deviation, is analyzed as well. Simulation results show that the performance of BER can be improved obviously using this proposed method.
作者 徐利再 沈薇薇 王宗欣
机构地区 复旦大学通信科学与工程系
出处 《信息与电子工程》 2005年第4期261-265,共5页 information and electronic engineering
基金 国家自然科学基金资助项目(60272033)
关键词 通信技术 译码 空时分组码 多径 多输入单输出 信道估计 communication techniques decoding STBC multipath multiple input single output channel estimation
分类号 TN911.22 [电子电信—通信与信息系统]
  • 相关文献

参考文献5

  • 1[1]Tarokh V,Jafarkani H,Calderbank A R.Space-time codes from orthogonal designs [J]. IEEE Transactions on Information Theory, 1999,45(5):1456-1467.
  • 2[2]Tarokh V, Seshadri N,Calderbank A R. Space-time codes for high data rate wireless communication: performance criterion and code construction [J]. IEEE Transactions on Information Theory,1998,44(2):744-765.
  • 3[3]Ntigroho B S,Balakrishman R D,Kwon H M,et al. PN code tracking for STBC transmit diversity RAKE receivers in closely spaced multipath environmens [A].Vehicular Technology Conference,2003,VTC 2003 Spring. The 57th IEEE Semiannual[C].2003,4: 2599-2603.
  • 4[4]Zhi Zhang,Guoqing Li,Jinkang Zhu. A novel decoding algorithm of STBC for CDMA receiver in multipath fading environment [A]. Vehicular Technology Conference, 2001,VTC 2001 Fall. IEEE VTS 54th[C]. 2001,4:1956-1959.
  • 5[6]John G,Proakis. Digital Communications[M]. Fourth Edition. Beijing: Publishing House of Electronics Industry,2001.

同被引文献6

  • 1[1]Tarokh V,Jafarkhani H,Calderbank A R.Space-time block codes from orthogonal designs[J].IEEE Trans.Inform.Theory 1999,45(5):1456-1467.
  • 2[2]Jafarkhani H.A Quasi-Orthogonal Space-Time Block Code[J].IEEE Trans.on Comm.,2001,49(1):1-4.
  • 3[3]Chen M Y,Chen C Y,Li H C,et al.Deriving new quasi-orthogonal space-time block codes and relaxed designing viewpoints with full transmit diversity[A].in Proceedings of the 2005 IEEE International Conference on Communications[C].2005.2922-2926.
  • 4[4]Dalton Lori A,Costas N Georghiades.A Full-Rate,Full-Diversity Four-Antenna Quasi-Orthogonal Space-Time Block Code[J].IEEE Trans.on wireless commun.,2005,4(2):363-366.
  • 5[5]Olcskei H B,Paulraj A J.Performance of space-time codes in the presence of spatial fading correlations[A].Proc.Asilomar conference[C].2000.687-693.
  • 6[6]Veeravalli V,Liang Y,Sayeed A M.Correlated MIMO wireless channels:Capacity,optimal signaling,and asymptotics[J].IEEE Trans.Inf.Theory,2005,51(6):2058-2072.

引证文献1

信息与电子工程
2005年 第4期

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