원문정보
초록
영어
Previously a novel chaos M-ary modulation and demodulation method based on spatiotemporal chaos Hamilton oscillator was proposed and is applied in M-ary communication. Without chaos synchronization circumstance, the performance of communication has been improved in bandwidth efficiency, transmission efficiency and anti-white- noise performance compared with traditional communication method. Due to the working performance of zone partition demodulator is strictly connected with channel noise, it is necessary to study the influence of Hamilton phase trajectory deeply by the channel noise. In this paper, two methods for designing of the boundary of zone partition demodulator in additive white Gaussian noise are discussed, which are using statistics and curve fitting ways. Therefore, the problem about how to determine the boundary of zone partition demodulator in white noise is solved. Finally, the chaos M-ary communication system based on Hamilton oscillator is constructed and simulated in white noise channel. The result shows that the method proposed in this paper can improve the anti-white-noise performance of the whole communication system.
목차
1. Introduction
2. M-ary Modulation and Demodulation Method Based on Hamilton Oscillator
2.1. Hamilton Oscillator Modulation Method
2.2. The Demodulation Method Based on Hamilton Oscillator Modulated signal
3. The Construction Method of Chaos M-ary Demodulator in White Noise Channel
3.1. The Curve Fitting Method to Determine the Boundary of ZPD
3.2. The Statistic Method to Determine the Boundary of ZPD
4. Theory Analysis and Evaluation
4.1. The Performance Evaluation of Hamilton M-ary Chaotic Communication System in White Noise Channel
4.2. The Simulation Analysis of Symbol Error Characteristics of Hamilton M-ary Chaotic Communication System in Different Boundary of ZPD
5. Conclusion
References