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一種基于矩陣旋轉(zhuǎn)的正交空時分組碼

王磊,  朱世華,  王君

王磊, 朱世華, 王君. 一種基于矩陣旋轉(zhuǎn)的正交空時分組碼[J]. 電子與信息學報, 2005, 27(3): 397-401.
引用本文: 王磊, 朱世華, 王君. 一種基于矩陣旋轉(zhuǎn)的正交空時分組碼[J]. 電子與信息學報, 2005, 27(3): 397-401.
Wang Lei, Zhu Shi-hua, Wang Jun . An Orthogonal Space-Time Block Code Based on Matrix Rotation[J]. Journal of Electronics & Information Technology, 2005, 27(3): 397-401.
Citation: Wang Lei, Zhu Shi-hua, Wang Jun . An Orthogonal Space-Time Block Code Based on Matrix Rotation[J]. Journal of Electronics & Information Technology, 2005, 27(3): 397-401.

一種基于矩陣旋轉(zhuǎn)的正交空時分組碼

An Orthogonal Space-Time Block Code Based on Matrix Rotation

  • 摘要: Tarokh等人(1999)運用正交設(shè)計理論證明了當發(fā)射天線數(shù)大于2時,不存在可以獲得最大分集增益和最大傳輸速率的復正交空時分組碼。而以犧牲正交性和部分分集增益為代價來獲得更高傳輸速率的非正交空時分組碼又會使誤碼性能降低。該文通過對非正交空時分組碼信道相關(guān)矩陣采用矩陣旋轉(zhuǎn)的方法,提出了一種可以獲得最大傳輸速率、部分分集增益以及接收端線性解碼的正交空時分組碼。仿真結(jié)果表明,該方案與已有典型的空時分組碼相比,具有較好的誤碼性能。
    Abstract: According to the theory of orthogonal designs, Tarokh et al.(1999) proved that a complex orthogonal space-time block code that provides full diversity and full transmission rate is not feasible for more than two antennas. Whereas the non-orthogonal space-time block codes which obtain higher transmission rate at the cost of orthogonality and partial diversity gain may degrade the performance. By rotating the channel correlation matrix of the non-orthogonal space-time block code, this paper proposes an orthogonal rate-one space-time block code which provides partial diversity but can be linearly decoded at the receiver. Simulation results show that the scheme has better Bit Error Rate (BER.) performance compared to the existing typical codes.
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  • Tarokh V, Seshadri N, Calderbank A R. Space-time codes for high data rate wireless communication: Performance analysis and code construction[J].IEEE Trans. on Info. Theory.1998, 44(2):744-765[2]Alamouti S M. A simple transmitter diversity scheme for wireless communications[J].IEEE J. on Select. Areas Comm.1998, 16(8):1451-[3]Tarokh V, Jafarkhani H, Calderbank A R. Space-time block codes from orthogonal designs[J].IEEE Trans. on Info. Theory.1999,45(5):1456-[4]Tarokh V, Jafarkhani H, Calderbank A R. Space-time block coding for wireless communications: Performance results[J].IEEE J.on Select. Areas Comm.1999, 17(3):451-[5]Tirkkonen O, Boariu A, Hottinen A. Minimal non-orthogonality rate 1 space-time block code for 3+Tx[J].International Symposium on Spread Spectrum Techniques Applications, New Jersey,USA, Sept.2000, 2:429-[6]Jafarkhani H. A quasi-orthogonal space-time block code[J].IEEE Trans. on Comm.2001, 49(1):1-[7]Boariu A, Ionescu D M. A class of nonorthogonal rate-one space-time block codes with controlled interference[J].IEEE Trans.on Wireless Comm.2003, 2(2):270-[8]Papadias C B, Foschini G J. A space-time coding approach for systems employing four transmit antennas. IEEE International Conference on Acoustics, Speech and Signal Processing, Salt Lake City, Utah, USA, May 2001, 4:2481 - 2484.[9]Rouquette S, Merigeault S, Gosse K. Orthogonal full diversity space-time block coding based on transmit channel state information for 4 Tx antennas. IEEE International Conference on Communications, New York City, USA, May 2002, 1:558- 562.[10]張賢達.信號處理中的線性代數(shù).北京:科學出版社,1997:64.
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出版歷程
  • 收稿日期:  2003-10-09
  • 修回日期:  2004-04-26
  • 刊出日期:  2005-03-19

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