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Development of new two-dimensional spectral/spatial code based on dynamic cyclic shift code for OCDMA system

机译:基于动态循环移位码的OCDMA系统新型二维频谱/空间码的开发

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In this paper, a new two-dimensional spectral/spatial codes family, named two dimensional dynamic cyclic shift codes (2D-DCS) is introduced. The 2D-DCS codes are derived from the dynamic cyclic shift code for the spectral and spatial coding. The proposed system can fully eliminate the multiple access interference (MAI) by using the MAI cancellation property. The effect of shot noise, phase-induced intensity noise and thermal noise are used to analyze the code performance. In comparison with existing two dimensional (2D) codes, such as 2D perfect difference (2D-PD), 2D Extended Enhanced Double Weight (2D-Extended- EDW) and 2D hybrid (2D-FCC/MDW) codes, the numerical results show that our proposed codes have the best performance. By keeping the same code length and increasing the spatial code, the performance of our 2D-DCS system is enhanced: it provides higher data rates while using lower transmitted power and a smaller spectral width. (C) 2017 Elsevier Inc. All rights reserved.
机译:本文介绍了一个新的二维频谱/空间码族,称为二维动态循环移位码(2D-DCS)。 2D-DCS码是从动态循环移位码中得出的,用于频谱和空间编码。所提出的系统可以通过使用MAI抵消属性来完全消除多址干扰(MAI)。散粒噪声,相位感应强度噪声和热噪声的影响用于分析代码性能。与现有的二维(2D)代码相比,例如2D完美差异(2D-PD),2D扩展增强双重权重(2D-Extended-EDW)和2D混合(2D-FCC / MDW)代码,数值结果显示我们建议的代码具有最佳性能。通过保持相同的代码长度并增加空间代码,我们的2D-DCS系统的性能得到了增强:它提供更高的数据速率,同时使用更低的发射功率和更小的频谱宽度。 (C)2017 Elsevier Inc.保留所有权利。

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