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多載波垂直分層空時系統(tǒng)的移不變性編碼及其解碼

吳曉軍,  李星,  王繼龍,  王常吉

吳曉軍, 李星, 王繼龍, 王常吉. 多載波垂直分層空時系統(tǒng)的移不變性編碼及其解碼[J]. 電子與信息學(xué)報, 2005, 27(5): 673-678.
引用本文: 吳曉軍, 李星, 王繼龍, 王常吉. 多載波垂直分層空時系統(tǒng)的移不變性編碼及其解碼[J]. 電子與信息學(xué)報, 2005, 27(5): 673-678.
Wu Xiao-jun, Li Xing, Wang Ji-long, Wang Chang-ji. Shift-Invariance Coding and Decoding for Multicarrier V-BLAST System[J]. Journal of Electronics & Information Technology, 2005, 27(5): 673-678.
Citation: Wu Xiao-jun, Li Xing, Wang Ji-long, Wang Chang-ji. Shift-Invariance Coding and Decoding for Multicarrier V-BLAST System[J]. Journal of Electronics & Information Technology, 2005, 27(5): 673-678.

多載波垂直分層空時系統(tǒng)的移不變性編碼及其解碼

Shift-Invariance Coding and Decoding for Multicarrier V-BLAST System

  • 摘要: 該文將多載波(MultiCarrier,MC)技術(shù)引入垂直型貝爾實驗室分層空時(Vertical Bell Labs lAyered Space-Time,V-BLAST)結(jié)構(gòu),所形成的MC V-BLAST系統(tǒng)能更好地利用寬帶移動無線多媒體通信條件下頻率選擇性所產(chǎn)生的頻域分集能力。該文著重研究MC V-BLAST系統(tǒng)在下行頻率選擇性衰落環(huán)境中的解碼問題。該文首先為MC V-BLAST系統(tǒng)提出了一種新穎的移不變性編碼方法。利用上述移不變性性質(zhì),該文進(jìn)一步為MC V-BLAST系統(tǒng)提出了一種無需了解信道狀態(tài)信息(Channel State Information,CSI)的解碼算法。仿真結(jié)果表明了該文新穎移不變性編碼方法的有效性和解碼算法的性能。
    Abstract: The combining form of the MultiCarrier (MC) technique with the Vertical Bell Labs lAyered Space-Time (V-BLAST) architecture, i.e., the MC V-BLAST system, can better take advantage of the frequency diversity force resulting from the frequency-selective feature in the broadband mobile wireless multimedia communications. This paper explores the decoding problem of the MC V-BLAST system under the downlink frequency-selective fading environment. One novel shift-invariance coding scheme is firstly proposed for the MC V-BLAST system. Successively, by exploiting the above shift-invariance property, a decoding algorithm without knowing Channel State Information (CSI) is derived. Simulations demonstrate the validity of the novel shift-invariance coding scheme and the performance of the decoding algorithm.
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  • Wolniansky 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[J].IEEE ISSSE98,Pisa, Italy, September.1998, 1:295-[2]Wang Z, Giannakis G B. Wireless multicarrier communications[J].IEEE Signal Processing Mag.2000, 17(3):29-[3]Boubaker N, Letaief K B, Murch R D. A low complexity multicarrier BLAST architecture for realizing high data rates over dispersive fading channels[J].IEEE VTC01 Spring,Rhodes Island, Greece, May.2001, 2:800-[4]Sohn I. Space frequency block coded turbo-BLAST detection for MIMO-OFDM systems[J].Electronics Letters.2003, 39(21):1557-[5]Golden G D, Foschini G J, Valenzuela R A, et al.. Detection algorithm and initial laboratory results using V-BLAST space-time communication architecture[J].Electronics Letters.1999, 35(1):14-[6]Alamouti S M. A simple transmit diversity technique for wireless communications[J].IEEE J. on Select. Areas Commun.1998, 16(8):1451-[7]Yin Q Y, Newcomb R W, Zou L H. Estimating 2-D angles of arrival via two parallel linear array. IEEE ICASSP89,Glasgow, Scotland, May 1989:2803 -2806.[8]Wu X, Yin Q, Zhang H. Lower-complexity direct symbol detector for multiuser MC-CDMA system using antenna array without vector channel estimation[J].IEEE ISCAS02,Phoenix, USA, May.2002, 5:5-[9]Wu X, Yin Q, Feng A, et al.. Joint space-frequency multiuser symbols detector for MC-CDMA system with uniform linear array[J].Journal of Electronics (China.2002,19(4):337-
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  • 收稿日期:  2003-12-22
  • 修回日期:  2004-05-19
  • 刊出日期:  2005-05-19

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