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首页> 外文期刊>Communications, IET >Performance analysis of asynchronous multicarrier code division multiple access against direct sequence code division multiple access and long polyphase sequences for uplink powerline communication systems with impulsive noise
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Performance analysis of asynchronous multicarrier code division multiple access against direct sequence code division multiple access and long polyphase sequences for uplink powerline communication systems with impulsive noise

机译：具有脉冲噪声的上行电力线通信系统对直接序列码分多址和长多相序列的异步多载波码分多址性能分析

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摘要

In this study, the performance of two asynchronous multi-access direct sequence code division multiple access (DS-CDMA) and multicarrier code division multiple access (MC-CDMA) systems with binary and polyphase long sequences is compared. An indoor multipath powerline channel model generated from random impedance networks is used. The powerline background, narrowband and impulsive noise are modelled statistically, based on models and measurements done in previous works. A complete analytical performance study is done for asynchronous MC-CDMA employing an interval guard in the form of a cyclic prefix (CP) and periodic long sequences, which provides a better channel coding than short sequences. The analytical results are completed with Monte Carlo simulations for both, DS-CDMA and MC-CDMA systems. Under impulsive noise an upper bound in the bit error rate (BER) performance for DS-CDMA and MC-CDMA systems is obtained analytically, which is confirmed by the Monte Carlo simulations.
机译：在这项研究中，比较了具有二进制和多相长序列的两个异步多址直接序列码分多址（DS-CDMA）和多载波码分多址（MC-CDMA）系统的性能。使用从随机阻抗网络生成的室内多径电力线信道模型。基于先前工作中所做的模型和测量，对电力线背景，窄带和脉冲噪声进行了统计建模。对于采用周期前缀（CP）和周期长序列形式的间隔保护的异步MC-CDMA，完成了完整的分析性能研究，与短序列相比，它提供了更好的信道编码。对于DS-CDMA和MC-CDMA系统，分析结果均由Monte Carlo仿真完成。在脉冲噪声下，可以通过分析获得DS-CDMA和MC-CDMA系统的误码率（BER）性能的上限，这已通过蒙特卡洛仿真得到了证实。

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