赵太飞,包鹤,马欣媛.无线紫外光MIMO湍流信道中BCOSTBC编码研究[J].电子测量与仪器学报,2017,31(11):1737-1744
无线紫外光MIMO湍流信道中BCOSTBC编码研究
Research on BCOSTBC for wireless UV MIMO communication turbulent channel
  
DOI:10.13382/j.jemi.2017.11.007
中文关键词:  日盲紫外光  MIMO系统  BCOSTBC  湍流信道
英文关键词:blind UV  MIMO system  BCOSTBC  turbulent channel
基金项目:国家自然科学基金(U1433110)、陕西省教育厅产业化(2013JC09)培育项目、西安市碑林区科技计划(GX1617)资助项目
作者单位
赵太飞 西安理工大学自动化与信息工程学院西安710048 
包鹤 西安理工大学自动化与信息工程学院西安710048 
马欣媛 西安理工大学自动化与信息工程学院西安710048 
AuthorInstitution
Zhao Taifei Faculty of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, China 
Bao He Faculty of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, China 
Ma Xinyuan Faculty of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, China 
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中文摘要:
      针对在准确估计信道情况下无线紫外光MIMO湍流信道中如何有效地获得全分集增益这一问题。首先研究了无线紫外光通信的传输特性,然后研究了MIMO信道以及影响紫外光通信的主要因素。最后,采用比特补码式正交空时码(BCOSTBC)编码,推导出在弱湍流情况下直视(LOS)和非直视(NLOS)的误码率公式。实验结果表明,采用编码后1×2、2×1和2×2系统的误码率性能在LOS和NLOS情况下分别约改善了3、6和9 dB。增加光电探测器数目可以提高分集增益,有益于系统性能的改善;其中,2×2系统需要的发射功率最小,传输的距离更远,数据传输速率更大,误码率更低;在NLOS条件下通过小角度收发仰角能够改善系统的误码率性能。
英文摘要:
      Aiming at the problem of how to effectively obtain the full diversity gain in the wireless ultraviolet Multi input Multiple output (MIMO) turbulence channel in the case of accurate estimation of the channel, the transmission characteristics of wireless ultraviolet communication are firstly studied, and then the MIMO channel and the main factors affecting the ultraviolet communication are studied. Finally, the bit error rate formula of LOS and NLOS is derived by using bit complementary orthogonal space time code (BCOSTBC) coding. The experimental results show that the bit error rate performance of 1×2, 2×1, 2×2 system is improved by 3, 6 and 9 dB respectively in LOS and NLOS. Increasing the number of photodetector can increase the diversity gain. The 2×2 system needs the least transmission power, the transmission distance is farther, the data transmission rate is bigger, the bit error rate is lower. In the NLOS condition, through the small angle transmission angle can improve the system bit error rate performance.
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