OPTIMUM OPTICAL MODULATION INDEX OF LASER TRANSMITTERS IN SCM SYSTEMS

被引:18
作者
ALAMEH, K
MINASIAN, RA
机构
[1] University of Sydney, School of Electrical Engineering, NSW
关键词
Modulation; Optical communication; Optimisation;
D O I
10.1049/el:19900820
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An analysis of the optimum optical modulation index of laser transmitters in SCM systems is presented. Nonlinear distortion arising from overmodulation in a laser-limiter combination is studied. A generalised analysis, based on rectangular signal input power spectral density and broadband transmission, is given for the nonlinear noise spectral density. A computer algorithm is developed to generate the optimum modulation index which maximises the received CNR for SCM transmission. © 1990, The Institution of Electrical Engineers. All rights reserved.
引用
收藏
页码:1273 / 1275
页数:3
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