基于MIMO-OFDM机制的紫外光通信传输系统的研究  

MIMO-OFDM mechanism in ultraviolet communication transmission system

作　　者：邵平[1] 李晓毅[1] 马宁[1] 

机构地区：[1]重庆通信学院,重庆400035

出　　处：《数字通信》2013年第3期34-36,共3页Digital Communications and Networks

摘　　要：简要介绍非直视紫外光通信特性、通信方式、影响因素以及面临的主要问题,重点分析MIMO(multiple in-put multiple output,多输入多输出技术)技术以及基于STFBC(space-time/frequency black codes,空时/空频编码技术)的MIMO-OFDM系统模型。为进一步提高紫外光通信传输系统频谱利用率,引入了一种既能充分利用频率复用增益、空间增益以及空时分集增益,又能有效对抗频率和时间选择性衰落的极大似然的非线性检测算法,极大地提高了紫外光通信传输系统的性能。The paper introduces the characteristics, communication mode, influencing factors and main problems of NLOS （none-line-of-sight） UV（ ultraviolet light） communication. MIMO-OFDM （multiple input multiple output-orthogonal frequency division multiplexing） system model based on STFBC（ space time frequency block coding） is analyzed and discussed. In order to further improve the spectrum utilization rate of ultraviolet communication system, a large linear detection algorithm is introduced, which can not only make full use of frequency multiplexing gain, spatial gain and space-time diversity gain, hut also can effectively resist frequency and time selective fading. It greatly improves the UV communication transmission system performance.

关 键 词：紫外光通信 非直视 多输入多输出技术 空时 空频编码技术 

分 类 号：TN929.1[电子电信—通信与信息系统]