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首页> 外文期刊>International journal of systems,control and communications >Performance analysis for DCSK system over land mobile satellite channel
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Performance analysis for DCSK system over land mobile satellite channel

机译：陆地移动卫星频道DCSK系统的性能分析

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In chaos-based digital communications, differential chaos-shift keying (DCSK) system has been widely studied thanks to its non-coherent demodulation without chaotic sequence synchronisation. In respect of the performance evaluation, bit error rate (BER) of the DCSK system was investigated over various transmission environments such as noise, fading, and multi-path-affected channels which are radio-propagation models from simple to complex. In this paper, the idea of applying DCSK for operation in land mobile satellite environments is proposed. A land mobile satellite channel, i.e., Lutz model with two states, is used to evaluate the system performance. Discrete-time models of transmitter and receiver over the studied channel are described. BER analysis is performed by means of Gaussian approximation and discrete integration. The analysed expressions are verified by Monte Carlo simulation. Performance comparison between different DCSK-based schemes over the studied channel is carried out. Obtained results point out that DCSK system can be used as a physical-layer modulation method using chaos for land mobile satellite applications.
机译：在基于混沌的数字通信中，由于其非相干解调而没有混乱序列同步，差动混沌移位键控（DCSK）系统已被广泛研究。关于性能评估，在各种传输环境中研究了DCSK系统的误码率（BER），例如噪声，衰落和受到多路径影响的信道，这些传输环境是从简单到复杂的无线电传播模型。在本文中，提出了应用DCSK在陆地移动卫星环境中运行的想法。陆地移动卫星频道，即带有两个状态的Lutz模型，用于评估系统性能。描述了通过研究通道上的发射机和接收器的离散时间模型。通过高斯近似和离散集成来执行BER分析。通过Monte Carlo仿真验证了分析的表达式。执行了研究通道上的基于不同DCSK的方案之间的性能比较。获得的结果指出，DCSK系统可以用作使用混乱的土地移动卫星应用的物理层调制方法。

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