Design and performance of multi-length address codes in an OCDMA system

YANG Mengjie; LI Chuanqi; WANG Dachi; ZHANG Xiurong; FAN Qingbin

doi:10.7510/jgjs.issn.1001-3806.2015.03.019

In order to meet the demand that different users sent at different rates in an optical code division multiple access (OCDMA) system,the interval-set with no repetitive data was designed based on MATLAB and the multi-length address codes with ideal correlation was obtained. The code family will be obtained corresponding to the given code weight and corresponding capacity. The formula of bit error rate (BER) was derived based on the characteristics of the codes and BER diagram with the change of user numbers was given. The multi-rate OCDMA system was designed and simulated. The bit error rate and system performance were analyzed. The results show that the codes have the good correlation and good performance of BER. The system can meet the needs of users at different rates. The original sign can be restored after decoding and the excellent eye diagrams can be obtained. The results are helpful for the development of multi-rate OCDMA systems.

Design and performance of multi-length address codes in an OCDMA system

Corresponding author: LI Chuanqi, lcq@mailbox.gxnu.edu.cn;

1. Electronic Engineering College, Guangxi Normal University, Guilin 541004, China

Received Date: 2014-04-14

Accepted Date: 2014-11-10

Available Online: 2015-05-25

Abstract: In order to meet the demand that different users sent at different rates in an optical code division multiple access (OCDMA) system,the interval-set with no repetitive data was designed based on MATLAB and the multi-length address codes with ideal correlation was obtained. The code family will be obtained corresponding to the given code weight and corresponding capacity. The formula of bit error rate (BER) was derived based on the characteristics of the codes and BER diagram with the change of user numbers was given. The multi-rate OCDMA system was designed and simulated. The bit error rate and system performance were analyzed. The results show that the codes have the good correlation and good performance of BER. The system can meet the needs of users at different rates. The original sign can be restored after decoding and the excellent eye diagrams can be obtained. The results are helpful for the development of multi-rate OCDMA systems.

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Reference (14)

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Design and performance of multi-length address codes in an OCDMA system

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