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基于LCP预编码的VBLAST-OFDM系统 被引量：3

The system for VBLAST-OFDM based on LCP precoding
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摘要 提出基于线性星座预编码 (LCP预编码 )的VBLAST OFDM系统 ,该系统通过在OFDM子载波信道间进行LCP预编码来获得频率分集增益 ,适用于宽带无线通信 .同时提出一种VBLAST LCP联合解码器 ,该解码器结合了经典的VBLAST解码方法和基于最大似然准则 (ML)的LCP解码 .仿真表明相比与未编码的VBLAST OFDM系统 ,VBLAST OFDM LCP系统至少能提供 8.5dB的增益 .VBLAST OFDM LCP系统的编码是无冗余的 ,而且编码解码结构比较简单 ,有很强的应用价值 . The system for VBLAST-OFDM based on LCP precoding was proposed for wideband wireless communications. Frequency diversity was obtained by LCP precoding over OFDM sub-carriers. A combined VBLAST-LCP decoder was proposed. It combined successive cancellation of classical VBLAST with Maximum Likelihood decoding of LCP precoding. The simulation result showed that VBLAST-OFDM-LCP can gain at least 8.5 dB compared with VBLAST-OFDM.
作者 屈代明 朱光喜 桂波
机构地区 华中科技大学电子与信息工程系
出处 《华中科技大学学报（自然科学版）》 EI CAS CSCD 北大核心 2004年第4期83-86,共4页 Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词 宽带无线通信 空时传输 VBLAST LCP预编码 OFDM wideband wireless communications space-time transmission VBLAST LCP precoding OFDM
分类号 TN925 [电子电信—通信与信息系统]
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参考文献8

  • 1Wolniansky P W, Fosehini G J, Golden G D, et al. V-blast: An architecture for realizing very high data-rotes over the rieh-seattering wireless ehannel, in Filippo GIANNETTI, Proc IEEE ISSSE-98, University of Pisa, Italy, 1998.
  • 2Wolniansky P W, Foschini G J, Golden G D, et al. V-blast: An architecture for realizing very high data-rates over the rich-scattering wireless channel, in Filippo GIANNETTI, Proc IEEE ISSSE-98, University of Pisa, Italy, 1998.
  • 3Choi Won-Joon, Negi R, Cioffi J M. Combined ML and DFE decoding for the V-blast system, in Proc IEEE ICC00, New Or-leans, LA, USA, 2000. 18-22.
  • 4Foschini G J, Gans M J. Layered space-time architecture for wireless cornnmnication in a fading environment when using multiple antennas. Bell Labs Syst Tech J, 1996, 1:41-59.
  • 5Piechocki R J, Flectcher P N, Nix A R, et al. Performance evaluation of BLAST-OFDM enhanced Hiperlan/ 2 using simulated and measured channel data. Electron Lett, 2001, 37(18): 1 137-1 139.
  • 6Bingham J A C. Multicarrier modulation for data transmission: An idea whose time has come. IEEE Communications Magazine, 1990(5) : 5- 14.
  • 7Xin Y, Giannakis G 13. High-rate space-time layered OFDM. IEEE Communications Letters, 2002, 6 (5) :187- 189.
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同被引文献36

  • 1Wang Z, Giannakis G B. Wireless Multicarrier Communications: Where Fourier Meets Shannon[ J]. IEEE Signal Processing Mag, 2000, 17(3): 29-48.
  • 2Zhang Wei, Ben L K. A Systematic Design of Full Diversity Multiuser Space-Frequency Codes[ J]. IEEE Trans on Signal Processing, 2010, 58(3) : 1732-1740.
  • 3Lee K F, Williams D B. A Space-time Coded Transmitter Diversity Technique for Frequency Selective Fading Channels[C]// IEEE Sensor Array and Multichannel Signal Processing Workshop. Cambridge: IEEE, 2000: 149-152.
  • 4Lee K F, Williams D B. A Space-Frequency Transmitter Diversity Technique for OFDM Systems[ C]//IEEE GLOBECOM. San Francisco: IEEE, 2000: 1473-1477.
  • 5Gong Y, Lateif K B. Space-frequency-time Coded OFDM for Broadband Wireless Communications[ C]//IEEE GLOBECOM. San Antonio: IEEE, 2001: 519-523.
  • 6A1-Ghadhban S, Mohammad M, Woerne B, et al. Performance Evaluation of Decoding Algorithms for Muhilayered STBC-OFDM Systems[ C] //IEEE ACSSC. Pacific Grove: IEEE, 2004: 1208-1212.
  • 7Stamoulis A, Liu Z, Giannakis G B. Space-Time Block-Coded OFDMA With Linear Precoding for Muhirate Services[ J]. IEEE Trans on Signal Processing, 2002, 50( 1): 119-129.
  • 8Foschini G J, Gans M J. On Limits of Wireless Communications in a Fading Environment When Using Multiple Antennas[ J]. Wireless Personal Communications, 1998, 6(3): 311-335.
  • 9Telatar E. Capacity of Multi-antenna Gaussian Channels[J]. Europe Trans on Telecommunications, 1999, 10(6):585-595.
  • 10S M Alamouti. A simple transmit diversity technique for wireless communications [J]. IEEE J Select Ateas in Commun, 1998,16(8) : 1451 - 1458.

引证文献3

二级引证文献2

华中科技大学学报（自然科学版）
2004年 第4期

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