Power limitations due to four wave mixing in a direct sequence optical CDMA transmission system

被引：0
|
作者：
Uddin, MF [1 ]
Majumder, SP [1 ]
机构：
[1] Bangladesh Univ Engn & Technol, Dept Elect & Elect Engn, Dhaka 1000, Bangladesh
来源：
2005 13th IEEE International Conference on Networks Jointly held with the 2005 7th IEEE Malaysia International Conference on Communications, Proceedings 1 and 2 | 2005年
关键词：
bit error rate; dispersion shifted fiber; four wave mixing; multiple access interference; optical CDMA; optical receivers;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
A theoretical analysis is presented to evaluate the bit error rate (BER) performance of a direct sequence optical code division multiple access (DS-OCDMA) system with dispersion shifted fiber (DSF) considering the effect of four wave mixing (FWM). To verify the analytical expression of BER, the BER performance is evaluated using Matlab simulation with 63 chips per bit m-sequence as well as Cold sequence and compared with analytical results. It is investigated that simulation and analytical results are similar in all cases. Further, BER performance is evaluated for 1023 chips per bit encoding using analytical expression. The BER performance is found to be degraded due to FWM effect if the transmitted power per channel and number of simultaneous users arc increased. It is investigated that maximum allowable transmitted power per channel is limited due to FWM effect. It is found that the maximum allowable transmitted power per channel is limited to -14 dBm for 10 users and -21 dBm for 20 users for a 10 Mb/s, 1000 km system with 1023 chips per bit encoding at a BER of 10(-9).
引用
收藏
页码：297 / 301
页数：5
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