Evaluation of Chaotic Demodulator for EBPSK Signals  

作　　者：Song Zhang Guo-Sheng Rui Yang Zhang 

机构地区：[1]the Department of Electronics and Information Engineering,NavalAeronautical and Astronautical University,Yantai 264001,China

出　　处：《Journal of Electronic Science and Technology》2016年第3期262-267,共6页电子科技学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant No.41476089

摘　　要：Based on the theory of Duffing oscillator weak signal detection and the technology of extended binary phase shift keying （EBPSK） modulation, the chaotic demodulator using the Duffing oscillator for EBPSK signals was proposed. The proposed demodulator could avoid the problem of demodulation filters design, and shows the excellent anti-noise capability of chaotic oscillator detection. Numerical and experimental tests were taken to investigate the impact of modulation parameters T and 0 on bit error performance of the proposed method, and the performance limits were gotten. The results show that the proposed chaotic demodulator works well under a very low signal-to-noise ratio （SNR） conditions, and gets SNR gains about 20 dB to 30 dB from the impulse filter.Based on the theory of Duffing oscillator weak signal detection and the technology of extended binary phase shift keying （EBPSK） modulation, the chaotic demodulator using the Duffing oscillator for EBPSK signals was proposed. The proposed demodulator could avoid the problem of demodulation filters design, and shows the excellent anti-noise capability of chaotic oscillator detection. Numerical and experimental tests were taken to investigate the impact of modulation parameters T and 0 on bit error performance of the proposed method, and the performance limits were gotten. The results show that the proposed chaotic demodulator works well under a very low signal-to-noise ratio （SNR） conditions, and gets SNR gains about 20 dB to 30 dB from the impulse filter.

关 键 词：Index Terms Duffing oscillator DEMODULATION extended binary phase shift keying （EBPSK） receiver filter. 

分 类 号：TN763[电子电信—电路与系统]