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天線陣結(jié)構(gòu)對(duì)非視距室內(nèi)MIMO信道容量的影響

呂劍剛 呂英華 李云莊 杜鵑

呂劍剛, 呂英華, 李云莊, 杜鵑. 天線陣結(jié)構(gòu)對(duì)非視距室內(nèi)MIMO信道容量的影響[J]. 電子與信息學(xué)報(bào), 2006, 28(9): 1636-1639.
引用本文: 呂劍剛, 呂英華, 李云莊, 杜鵑. 天線陣結(jié)構(gòu)對(duì)非視距室內(nèi)MIMO信道容量的影響[J]. 電子與信息學(xué)報(bào), 2006, 28(9): 1636-1639.
Lü Jian-gang, Lü Ying-hua, Li Yun-zhuang, Du Juan. Antenna Array Structures Effect on Capacity of Indoor NLOS MIMO Channel[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1636-1639.
Citation: Lü Jian-gang, Lü Ying-hua, Li Yun-zhuang, Du Juan. Antenna Array Structures Effect on Capacity of Indoor NLOS MIMO Channel[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1636-1639.

天線陣結(jié)構(gòu)對(duì)非視距室內(nèi)MIMO信道容量的影響

Antenna Array Structures Effect on Capacity of Indoor NLOS MIMO Channel

  • 摘要: 采用2維射線跟蹤法分析了非視距室內(nèi)環(huán)境中天線間隔、天線陣形對(duì)MIMO系統(tǒng)容量和互補(bǔ)累積分布函數(shù)(CCDF)的影響。結(jié)果表明隨著天線間隔減小,MIMO系統(tǒng)容量降低。10%中斷容量表明,天線間隔相同時(shí),有獨(dú)立同分布瑞利信道容量大于線性陣容量大于方陣容量或者圓形陣容量的關(guān)系。當(dāng)天線間隔大于等于3 時(shí),不同天線陣列陣形對(duì)容量影響非常小,此時(shí)i.i.d.瑞利信道理論容量幾乎全部實(shí)現(xiàn)。當(dāng)天線間隔小于等于1 時(shí),天線陣列陣形對(duì)容量影響較大,矩形陣和圓形陣MIMO系統(tǒng)容量相差較小,但都顯著小于線性陣列系統(tǒng)容量。在非視距的室內(nèi)環(huán)境中,要實(shí)現(xiàn)最大的MIMO容量增益,設(shè)計(jì)天線陣列時(shí)應(yīng)該對(duì)天線間隔和陣列陣形綜合考慮。
  • Foschini 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[2]Telatar I E. Capacity of multi-antenna Gaussian channels[J].Eur. Trans. Tel.1999, 10(6):585-595[3]Paularj A J, Gore D A, Babar R U, et al.. An overview of MIMO communicationsA key to gigabit wireless[J].Proc. IEEE.2004, 92(2):198-218[4]Gesbert D, Shafi M, Shiu D S, et al.. From theory to Practice: An overview of MIMO spac-time coded wireless systems[J].IEEE J. on Select. Areas Commun.2003, 21(3):281-302[5]Huang Y M, L Y H, Xu L. Improving a hybrid method ofindoor propagation modeling for wireless communications systems. The Journal of China University of Posts and Telecommunications, 2003, 10(3): 41-45.[6]Hampicke D, Landmann M, Schneider C, et al.. MIMO capacities for different antenna array structures based on double directional wideband channel measurements, Proceedings of VTC 2002, 1: 180-184.[7]Pohl V, Jungnickel V, Haustein T, et al.. Antenna spacing in MIMO indoor channels. IEEE VTC, 2002, 2: 749 -753.[8]Ghobadi C, Shepherd P R, Pennock S R. 2D ray-tracing model for indoor radio propagation at millimeter frequencies, and the study of diversity techniques. Proc.-H., 1998, 145( 4): 349-353.[9]Iskander M F, Yun Z. Propagation prediction models for wireless communication systems[J].IEEE Trans. on Microwwl. Tech.2002, 50(3):662-673[10]Burr A. Evaluation of capacity of indoor wireless MIMO channel using ray tracing. Proceeding International Zurich Seminar Broadband Communications, 2002: 28.1-28.6.[11]Tila F, Shepherd P R, Pennock S R. Theoretic capacity evaluation of indoor micro- and macro-MIMO systems at 5GHz using site specific ray tracing[J].Electron. Lett.2003, 39(5):471-472[12]季忠,黎擯洪, 王豪行等. 用射線跟蹤法對(duì)室內(nèi)電波傳播進(jìn)行預(yù)測(cè). 電波科學(xué)學(xué)報(bào),1999, 14(2): 160-165.[13]王一平,陳達(dá)章,劉鵬程. 工程電動(dòng)力學(xué). 西安:西北電訊工程學(xué)院出版社,1985.[14]Chuah C N, Tse D, Kahn J M, et al.. Capacity scaling in MIMO wireless systems under correlated fading[J].IEEE Trans. on Info. Theory.2002, 48(3):637-650[15]Ertel R B, Cardieri P, Sowerby K W, et al.. Overview of spatial channel models for antenna array communication systems. IEEE Personal Commu., 1998, 5: 10-22.[16]Biglieri E, Proakis J, Shamai S. Fading channels: information-theoretic and communications aspect[J].IEEE Trans. on Info. Theory.1998, 44(6):2619-2692
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  • 收稿日期:  2004-12-29
  • 修回日期:  2005-06-21
  • 刊出日期:  2006-09-19

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