Performance analysis for the bit-error rate of SAC-OCDMA systems

被引：4
|
作者：
Feng, Gang [1 ]
Cheng, Wenqing [1 ]
Chen, Fujun [2 ]
机构：
[1] Huazhong Univ Sci & Technol, Dept Elect & Informat Engn, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Coll Optoelect Sci & Engn, Wuhan 430074, Peoples R China
来源：
INFRARED PHYSICS & TECHNOLOGY | 2015年 / 72卷
基金：
中国国家自然科学基金;
关键词：
OCDMA; NB statistics; BER performance; OPTICAL CDMA SYSTEMS; FIBER SOURCE; NOISE; CODE;
D O I：
10.1016/j.infrared.2015.07.022
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Under low power, Gaussian statistics by invoking the central limit theorem is feasible to predict the upper bound in the spectral-amplitude-coding optical code division multiple access (SAC-OCDMA) system. However, this case severely underestimates the bit-error rate (BER) performance of the system under high power assumption. Fortunately, the exact negative binomial (NB) model is a perfect replacement for the Gaussian model in the prediction and evaluation. Based on NB statistics, a more accurate closed-form expression is analyzed and derived for the SAC-OCDMA system. The experiment shows that the obtained expression provides a more precise prediction of the BER performance under the low and high power assumptions. (c) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：160 / 162
页数：3
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