相关信道中光多输入多输出系统的误码率

王惠琴; 王雪; 曹明华

doi:10.3788/OPE.20162409.2142

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相关信道中光多输入多输出系统的误码率

现代应用光学 | 更新时间：2020-07-07

- 相关信道中光多输入多输出系统的误码率
- Bit error rate of optical multiple input multiple output system in correlated channel
- 光学精密工程 2016年24卷第9期页码：2142-2148
- 作者机构：
  
  兰州理工大学计算机与通信学院, 甘肃兰州 730050
- 作者简介：
  
  王惠琴(1971-), 女, 甘肃渭源人, 教授, 硕士生导师, 2012年于西安理工大学获得博士学位, 主要从事无线光通信理论与技术方面的研究。E-mail:15117024169@139.com E-mail:15117024169@139.com
  [ "王雪(1991-), 女, 甘肃景泰人, 硕士研究生, 主要从事无线光通信MIMO技术方面的研究。E-mail:wxue91012@163.com" ]
- 基金信息：
  
  国家自然科学基金资助项目(61465007);国家自然科学基金资助项目(61265003);兰州理工大学博士基金资助项目(14-0232)
- DOI：10.3788/OPE.20162409.2142
  中图分类号： TN929.12
- 收稿日期：2016-05-29，
  
  录用日期：2016-6-24，
  
  纸质出版日期：2016-09
- 稿件说明：
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王惠琴, 王雪, 曹明华. 相关信道中光多输入多输出系统的误码率[J]. 光学精密工程, 2016,24(9):2142-2148.

Hui-qin WANG, Xue WANG, Ming-hua CAO. Bit error rate of optical multiple input multiple output system in correlated channel[J]. Optics and precision engineering, 2016, 24(9): 2142-2148.
王惠琴, 王雪, 曹明华. 相关信道中光多输入多输出系统的误码率[J]. 光学精密工程, 2016,24(9):2142-2148. DOI： 10.3788/OPE.20162409.2142.

Hui-qin WANG, Xue WANG, Ming-hua CAO. Bit error rate of optical multiple input multiple output system in correlated channel[J]. Optics and precision engineering, 2016, 24(9): 2142-2148. DOI： 10.3788/OPE.20162409.2142.

摘要

多输入多输出（MIMO）技术可以在不额外增加频谱资源和发射功率的条件下成倍提高通信系统的信道容量，但子信道间存在的空间相关性会影响光MIMO无线通信系统（OWC）的性能。本文研究了对数衰落信道中空间相关性对光MIMO系统误码率的影响。针对脉冲位置调制（PPM）方式，采用指数相关模型推导出了光MIMO通信系统在不同相关机制下的对数振幅衰落系数矩阵和最大似然检测准则。然后，采用Wilkinson近似方法推导出了该条件下光MIMO系统误码率的上界。最后，利用仿真实验进一步分析了空间相关性对OWC MIMO系统误码率的影响。结果表明：空间相关性的存在使得OWC MIMO系统的性能恶化，且随着收发天线数量的增加，空间相关性会导致系统误码率恶化加剧。因此在实际工程应用中要合理放置天线，尽量减小天线之间的相关性，以便更好地发挥MIMO系统的优势。

Abstract

Multiple Input Multiple Output (MIMO) systems can improve the channel capability of an Optical Wireless Communication(OWC) system without adding extra frequency resources and emitting powers

but the space correlation between the channels will impact the system performance. This paper researches the effects of space correlation on the Bit Error Rate (BER) of an optical MIMO system in log-normal fading channel. In view of the Pulse Position Modulation (PPM)

the log-amplitude fading matrix in different correlation mechanisms and maximum likelihood detection rule were derived by using an exponential correlation model in the log-normal fading channel. On the basis of this

the upper bound of the BER of correlated OWC MIMO system was deduced by adopting Wilkinson method. Finally

the impact of space correlation on BER of the OWC MIMO system was analyzed further. The results show that space correlation deteriorates the performance of OWC MIMO system and the BER of the system will be worsen by the space correction with the increase of the number of the antenna. It suggests that antennas should be placed reasonably to reduce the space correction between the antennas

so to better play the advantages of MIMO systems.

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references

KARIM M, NASIRI-KENARI I M. Outage analysis of relay-assisted free-space optical communications[J]. IET Communications, 2010, 4(12):1423-1432.

SAFARI M, UYSAL M. Cooperative diversity over log-normal fading channels:performance analysis and optimization[J]. IEEE Transactions on Wireless Communications, 2008, 7(5):1963-1972.

FARID A A, HRANILOVI S. Outage capacity optimization for free-space optical links with pointing errors[J]. Journal of Lightwave Technology, 2007, 25(7):1702-1710.

CHAKRABORTY K. Capacity of the MIMO optical fading channel[C]. Information Theory, 2005 ISIT 2005 Proceedings International Symposium, 2008:530-534.

王惠琴, 曹明华, 陈海燕, 等.无背景噪声下PPM调制时光MIMO的信道容量分析[J].光学学报, 2012, 32(3):0306003-1

WANG H Q, CAO M H, CHEN H Y, et al.. Channel capacity of optical multiple input multiple output system without background noise[J]. Acta Optica Sinica, 2012, 32(3):0306003-1.(in Chinese)

ANDREWS L C, PHILLIPS R L. Laser Beam Propagation Through Random Media[M]. Bellingham:SPIE Press, 2005.

ANGUITAJ A, NEIFELD M A, VASIC B V. Spatial correlation and irradiance statistics in a multiple-beam terrestrial free-space optical communication link[J]. Applied Optics, 2007, 46(26):6561-6571.

肖帅芳, 黄开枝, 钟州, 等.室内可见光MIMO信道的空间相关性分析[J].电子与信息学报, 2014, 36(9):2117-2123.

XIAO SH F, HANG K ZH, ZHONG ZH, et al.. Spatial correlation analysis of MIMO channel in indoor visible light communication[J]. Journal of Electronics & Information Technology, 2014, 36(9):2117-2123.(in Chinese)

OZBILGIN T, KOCA M. Inter-aperture correlation in MIMO free space optical systems[J]. Optics Communications, 2015, 353:139-146.

沈红, 范承玉.信道相关对空间分集接收信号闪烁的影响[J].红外与激光工程, 2015, 44(8):2523-2527.

SHEN H, FAN CH Y. Influence of channel correlation on the signal scintillation with spatial diversity receiver[J]. Infrared and Laser Engineering, 2015, 44(8):2523-2527.(in Chinese)

ZHU X M, KAHN J M. Free-space optical communication through atmospheric turbulence channels[J]. IEEE Transactions on Communications, 2002, 50(8):1293-1300.

NAVIDPOURS M, UYSAL M, KAVEHRAD M. BER performance of free-space optical transmission with spatial diversity[J]. IEEE Transactions on Wireless Communications, 2007, 6(8):2813-2819.

KAUSHIK C, SUBHRAKANTI D, MASSIMO F. Outage capacity of MIMO possion fading channels[J]. IEEE Transactions on Information Theory, 2008, 54(11):4887-4907.

GAGLIARDIR, KARP S. M-ary poisson detection and optical communications[J]. IEEE Transactions on Communication Technology, 1969, 17(2):208-216.

CHAN H H, STERCKX K L, ELMIRGHANI J M H. et al.. Performance of optical wireless OOK and PPM systems under the constraints of ambient noise and multipath dispersion[J]. IEEE Communications Magazine, 1998, 36(12):83-87.

WU N, WANG X, DAI H. Performance of indoor visible light systems using OOK and PPM modulations under multipath channels[C]. Optical Wireless Communications(IWOW), 20132nd International Workshop on, 2013:84-88.

WILSONS G, BRANDT-PEARCE M, CAO Q, et al.. Free-space optical MIMO transmission with Q-ary PPM[J]. IEEE Transactions on Communications, 2005, 53:1402-1412.

TSIFTSIST A, SANDALIDIS H G, KARAGIANNIDIS G K, et al.. FSO links with spatial diversity over strong atmospheric turbulence channels[J]. 2008 IEEE International Conference on Communications, 2008:5379-5384.

CHURNSIDE J H, CLIFFORD S F. Log-normal Rician probability density function of optical scintillations in the turbulent atmosphere[J]. J. Opt. Soc. Am. A, 1987, 4(10):1923-1930.

KIM I I, HAKAKHA H, ADHIKARI P. Scintillation reduction using multiple transmitters[J].SPIE, 1997, 2990:102-113.

WILSONS G, BRANDT-PEARCE M, CAO Q, et al.. Optical repetition MIMO transmission with multipulse PPM[J]. IEEE Journal on Selected Areas in Communications, 2005, 23:1901-1910.

罗涛, 乐光新.多天线无线通信原理与应用[M].北京:北京邮电大学出版社, 2005:63-64.

LUO T, LE G X. Principle and Application of Multi-antenna Wireless Communication[M].Beijing:Beijing University of Posts and Telecommunication Press, 2005:63-64.(in Chinese)

CRISTOFF M, BJORN O. Asymptotic eigenvalue distributions and capacity for MIMO channels under correlated fading[J]. IEEE Transactions on Wireless Communications, 2004, 3(4):1350-1359.

ABU-DAYYA A A, BEAULIEU N C. Outage probabilities in the presence of correlated lognormal interferers[J]. IEEE Transactions on Vehicular Technology, 1994, 43(1):164-173.

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