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激光通信中的分集检测技术

郑铮 李宁

郑铮, 李宁. 激光通信中的分集检测技术[J]. 北京航空航天大学学报, 2008, 34(03): 280-284.
引用本文: 郑铮, 李宁. 激光通信中的分集检测技术[J]. 北京航空航天大学学报, 2008, 34(03): 280-284.
Zheng Zheng, Li Ning. Diversity detection algorithms in laser communications[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(03): 280-284. (in Chinese)
Citation: Zheng Zheng, Li Ning. Diversity detection algorithms in laser communications[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(03): 280-284. (in Chinese)

激光通信中的分集检测技术

基金项目: 国家自然科学基金资助项目(60407010);新世纪优秀人才支持计划资助项目;长江学者和创新团队发展计划资助项目
详细信息
  • 中图分类号: TN 929.12

Diversity detection algorithms in laser communications

  • 摘要: 在大气弱湍流模型下,应用Monte Carlo方法,通过产生符合光信号的对数幅度联合概率分布的数据,近似模拟计算了分集接收机的逐符号最大似然检测算法的似然比.研究了减少Monte Carlo方法中仿真点的个数对逐符号最大似然检测的分集接收机检测性能估计的影响.随后提出一种基于训练序列的分集检测方法.该方法在未知衰落分布相关信息的情况下,利用每帧内引入的一定长度的训练序列提供了某一较短时间间隔内的大气湍流信道的信息,基于与似然比表达式结构相似的算法获得改善的检测效果.仿真结果表明在各个分集接收机之间存在较强相关性的情况下,该算法仍可实现有效的检测.

     

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出版历程
  • 收稿日期:  2007-06-29
  • 网络出版日期:  2008-03-31

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