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一种循环相关结构酉空时星座的低复杂度译码方法 被引量：3

Low-complexity decoding of unitary space-time constellation with the circulant correlation structure
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摘要 提出了一种改进的酉空时码检测算法,根据星座中信号间的循环相关特性将星座分组,每组中的信号均与该组的中心信号具有较强的相关性.收方依据接收信号与各个分组中心信号之间的相关性判断接收信号所属的分组,通过在选定分组中的搜索得到对发送信号的估值.由于译码过程避免了最大似然检测对整个星座的遍历计算,因而计算复杂度低.仿真结果表明,合理选择分组参数能够以较小的性能损失换取译码复杂度的降低. A modified decoding algorithm for unitary space-time codes is presented, in which the decoding search is based on the groups classified by the circulant correlation of the signal points in the constellation. The decoder estimates the group to which the received signal belongs first. The decision is made after searching in the selected group. Only the central signals of each group and the signals within the selected group are considered, and lower decoding complexity is obtained compared to maximum likelihood decoding. Simulation results show that the proposed algorithm can result in an acceptable performance with much lower decoding complexity.
作者 苏昕 孙永军 田斌 方昀 易克初
机构地区 西安电子科技大学综合业务网理论与关键技术国家重点实验室
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2005年第6期844-847,864,共5页 Journal of Xidian University
基金 国家自然科学基金资助项目(60172029)
关键词 酉空时码 循环相关 最大似然检测 unitary space-time codes circulant correlation maxiumu likelihood detection
分类号 TN919.72 [电子电信—通信与信息系统]
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参考文献1

二级参考文献21

  • 1Foschini G J, Gans M J. On l,lmits of Wireless Communications in a Fading Environment When Using Multiple Antennas[J]. Wireless Personal Commun Mag, 1998, 6(2): 311-335.
  • 2Telatar E. Capacity of Multi-antenna Gaussian Channels[J]. Tech Memo AT&T Bell Labs, 1995, 27(6): 648-665.
  • 3Tarokh V, Seshadri N, Calderbank A R. Sapce-time Codes for High Data Rate Wireless Communications: Performance Criteria and Code Construction[J]. IEEE Trans on Inform Theory, 1998, 44(3): 744-765.
  • 4Alamouti S. A Simple Transmit Diversity Technique for Wireless Communicaltons[J]. IEEE J Select Areas Commun, 1998, 16(5) :1451-1458.
  • 5Tarokh V, Jafarkani H, Calderbank A R. Space-time Block Codes Form Orthogonal Designs[J]. IEEE Trans on Inform Theory, 1999,45(5): 1456-1467.
  • 6Tarokh V, Jafarkhani H, Calderbank R A. Space-time Block Codes for High Data Rates Wireless Communications: Performance Results[J]. IEEE J Select Areas Commun, 1999, 17(2) : 451-460.
  • 7Foschini G J. Layered Space-time Architecture for Wireless Communications in a Fading Environment When Using Multiple Antennas[J]. BeLl Labs Technical Journal, 1996, 1(2): 41-59.
  • 8Naguib A F, Seshadri N, Calderbank R A. Space-time Coding and Singal-processing for High-data-rate Wireless Communications[J].IEEE Signal Processing Mag, 2000, 17(3): 77-91.
  • 9Li Hongbin, Lu Xuguang. Capon Multiuser Receiver for CDMA Ssytems with Space-time Coding[J]. IEEE Trans on Signal Processing,2002, 50(5) : I 193-I 204.
  • 10Bevan D D N, Tanner R, Ward C R. Space-time Coding for Capacity Enhancement in Future Generation Wireless Communications Networks[J]. IEE ELectronics Letters, 2000, 15(3): 801-811.

共引文献12

同被引文献21

  • 1Marzetta T L, Hochwald B M. Capacity of a Mobile Multiple-antenna Communication Link in Rayleigh Flat Fading[J]. IEEE Trans on Inform Theory, 1999, 45(1): 139-157.
  • 2Hochwald B M, Marzetta T L. Unitary Space-time Modulation for Multiple-antenna Communications in Rayleigh Flat Fading[J]. IEEE Trans on Inform Theory, 2000, 46(2): 543-564.
  • 3Hochwald B M, Marzetta T L, Richardson T J, et al. Systematic Design of Unitary Space-time Constellations[J]. IEEE Trans on Inform Theory, 2000, 46(6) : 1962-1973.
  • 4Alamouti S M. A Simple Transmitter Diversity Scheme for Wireless Communications[J]. IEEE J Select Areas Commun, 1998, 16(8) : 1451-1458.
  • 5Tarokh V, Jafarkhani H, Calderbank A R. Space-time Block Codes from Orthogonal Designs[J]. IEEE Trans on Inform Theory, 1999, 45(5): 1456-1467.
  • 6Tarokh V, Kim M. Existence and Construction of Noncoherent Unitary Space-time Codes[J]. IEEE Trans on Inform Theory, 2002, 48(12): 3112-3117.
  • 7Zhao Wanlun, Leus G, Giannakis G B. Orthogonal Design of Unitary Constellations for Uncoded and Trellis-coded Noncoherent Space-time Systems[J]. IEEE Trans on Inform Theory, 2004, 50(6): 1319-1327.
  • 8Panagos A, Kosbar K. A New Design Metric for Unitary Space-time Codes[C]//IWCMC 2006-Proceedings of the 2006 International Wireless Communications and Mobile Computing Conference. New York: Association for Computing Machinery, 2006: 671-675.
  • 9Moustakas A L, Simon S H, Marzetta T L. Capacity of Differential versus Non-Differential Unitary Space-Time Modulation for MIMO channels[J]. IEEE Trans on Inform Theory, 2006, 52(8): 3622-3634.
  • 10Hochwald B M, Marzetta T L. Unitary Space-time Modulation for Multiple-antenna Communications in Rayleigh Flat Fading [J]. IEEE Trans on Information Theory, 2000, 46(2) : 543-564.

引证文献3

二级引证文献2

西安电子科技大学学报
2005年 第6期

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