分形调制在平坦慢衰落信道中的性能分析

Performance Analysis of Fractal Modulation in AWGN and Rayleigh Slow-flat Fading Channels

论述了作为一种新的低截获概率通信体制的分形调制的原理,介绍了分形调制在通信系统中的具体实现。针对分形调制固有的多速率分集的特性,提出了在接收端三种不同的解调判决的方法,并将分形调制与BPSK调制在AWGN、Rayleigh平坦慢衰落信道下的性能进行了仿真、分析和比较,得出了"利用多速率分集特性可使分形调制在AWGN和Rayleigh平坦慢衰落信道中获得差错性能的提升"的结论,同时为分形调制系统的设计提供了有益的尝试。

The principle of fractal modulation was introduced, and then its concrete implement in communication system was discussed. Based on the inherent characteristic of multi-rate diversity, three methods for demodulation and adjudication at receiving sink were proposed. Its performance in AWGN and Rayleigh slow-fiat fading channel was simulated and analyzed, and moreover, was compared with that of BPSK. It＇s concluded that to use the characteristic of multi-rate diversity can promote the performance of BER. It＇s apparent that the research has given a useful attempt for the design of fractal modulation communication system.