线带多点漫射系统、全漫射和混合光无线技术在真实环境中的性能分析

A. Al-Ghamdi, J. Elmirghani
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引用次数: 6

摘要

对室内光无线系统在三种不同环境下的性能进行了比较和评估。在空房间、有玻璃窗和门的房间、因小隔间而产生强烈阴影的房间等各种条件下,对红外链路的通道特性进行了评估。对传统的混合/漫射系统(CDS/CHS)和采用点漫射技术的线带多波束发射系统(LSMS)的相应结果进行了分析和比较。八个指示灯代表环境光噪声,并考虑到进一步的信号损伤。在这些条件下,我们的研究结果表明,LSMS可以减少脉冲扩展,其延迟扩展分别比CDS和CHS相关的延迟扩展低11和30倍。此外,与CDS和CHS相比,LSMS链路的信噪比分别提高了50 dB以上和55 dB左右。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance analysis of line strip multispot diffusing system, fully diffuse, and hybrid optical wireless techniques in a real environment
Performance comparison and evaluations for indoor optical wireless systems in three different environments are carried out. Channel characteristics of infrared links have been evaluated under various conditions including an empty room, a room with glass windows and a door, and a room that has very strong shadowing effects caused by mini cubical offices. The corresponding results have been analyzed and compared for conventional hybrid/diffuse systems (CDS/CHS) and line strip multibeam transmitter systems (LSMS) that use spot diffusing techniques. Eight directive lamps represented the ambient light noise and allowed further signal impairments to be taken into account. Under these conditions, our results indicate that LSMS can reduce pulse spread by a factor of 11 and 30 lower than the delay spread associated with CDS and CHS respectively. Furthermore, LSMS links can increase the SNR by more than 50 dB and about 55 dB compared to the CDS and CHS respectively.
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