Performance enhancement of OCDMA system using NAND detection with modified double weight (MDW) code for optical access network
Performance enhancement of OCDMA system using NAND detection with modified double weight (MDW) code for optical access network
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DOI：
10.1016/j.ijleo.2012.03.043
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发表时间：
2013-01-01
期刊：
影响因子：
3.1
通讯作者：
Rashid, M. A.
中科院分区：
文献类型：
--
作者：
Ahmed, N.;Aljunid, S. A.;Rashid, M. A.
本文采用作者新开发的带NAND检测技术的改进双权码（MDW）对OCDMA系统的性能进行了广泛的分析。在理论分析中，考虑了各种噪声和多址干扰效应。采用信噪比（SNR）和误码率（BER）来表征系统性能。并将NAND检测技术的分析结果与互补法和与减法的分析结果进行了比较。对比结果表明，与互补技术和与减法技术相比，MDW编码的NAND检测技术可以支持更多的活跃用户，提高系统性能。通过仿真实验，我们还确定了采用NAND检测技术的系统的误码率性能与互补和与减法技术相比有很大的提高。(c) 2012 Elsevier GmbH版权所有。
In this paper, we have extensively analyzed the OCDMA system performance using modified double weight (MDW) code with NAND detection technique as newly developed by the authors. In theoretical analysis, various noises and multiple-access interference (MAI) effect were taken into account. The system performance was characterized by the signal-to-noise ratio (SNR) and the bit-error-rate (BER). The analysis results obtained with NAND detection technique were compared with those as obtained with complementary and AND subtraction techniques. The comparison results revealed that the NAND detection technique with MDW code can support more number of active users and improve the system performance compared to complimentary and AND subtraction techniques. We also ascertained by simulation experiment that the BER performance of the system with NAND detection technique is greatly improved as compared to the complementary and AND subtraction technique. (c) 2012 Elsevier GmbH. All rights reserved.