Based on chaotic oscillator system, this paper proposes a novel method on high frequency low signal- to-noise ratio BPSK（ Binary Phase Shift Keying） signal detection. Chaotic oscillator system is a typical non-lin- ...Based on chaotic oscillator system, this paper proposes a novel method on high frequency low signal- to-noise ratio BPSK（ Binary Phase Shift Keying） signal detection. Chaotic oscillator system is a typical non-lin- ear system which is sensitive to periodic signals and immune to noise at the same time. Those properties make it possible to detect low signal-to-noise ratio signals. The BPSK signal is a common signal type which is widely used in modern communication. Starting from the analysis of advantages of chaotic, os~.illator system and signal features of the BPSK signal, we put forward a unique method that can detect low signar-to-noise ratio BPSK sig- nals with high frequency. The simulation results show that the novel method can dclct.t low signal-to-noise ratio BPSK signals with frequency in an order of magnitude of l0s Hz, and the input Signal-to-Noise Ratio threshold can be -20 dB.展开更多
针对低压电力线的噪声影响数据通信的问题,在分析了低压电力线的噪声特性和频谱特征的基础上,提出采用240 k Hz为载波中心频率,传输速率9600 bps的BFSK调制方式,给出了BFSK解调算法,分析了BFSK接收性能。仿真和实测结果表明,在信噪比-10...针对低压电力线的噪声影响数据通信的问题,在分析了低压电力线的噪声特性和频谱特征的基础上,提出采用240 k Hz为载波中心频率,传输速率9600 bps的BFSK调制方式,给出了BFSK解调算法,分析了BFSK接收性能。仿真和实测结果表明,在信噪比-10 d B时,设计的BFSK调制解调器的误码率约为0.3%。展开更多
文摘Based on chaotic oscillator system, this paper proposes a novel method on high frequency low signal- to-noise ratio BPSK（ Binary Phase Shift Keying） signal detection. Chaotic oscillator system is a typical non-lin- ear system which is sensitive to periodic signals and immune to noise at the same time. Those properties make it possible to detect low signal-to-noise ratio signals. The BPSK signal is a common signal type which is widely used in modern communication. Starting from the analysis of advantages of chaotic, os~.illator system and signal features of the BPSK signal, we put forward a unique method that can detect low signar-to-noise ratio BPSK sig- nals with high frequency. The simulation results show that the novel method can dclct.t low signal-to-noise ratio BPSK signals with frequency in an order of magnitude of l0s Hz, and the input Signal-to-Noise Ratio threshold can be -20 dB.
文摘针对低压电力线的噪声影响数据通信的问题,在分析了低压电力线的噪声特性和频谱特征的基础上,提出采用240 k Hz为载波中心频率,传输速率9600 bps的BFSK调制方式,给出了BFSK解调算法,分析了BFSK接收性能。仿真和实测结果表明,在信噪比-10 d B时,设计的BFSK调制解调器的误码率约为0.3%。
