An innovative detection method of high frequency BPSK signal with low signal-to-noise ratio
SHI Shuo, XU Li-zhen, GU Xue-mai, ZHANG Hong-li
National Key Laboratory of Communication System and Information Control Technology, Harbin Institute of Technology, Harbin 150001, China
Abstract:
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-linear 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 oscillator system and signal features of the BPSK signal, we put forward a unique method that can detect low signal-to-noise ratio BPSK signals with high frequency. The simulation results show that the novel method can detect low signal-to-noise ratio BPSK signals with frequency in an order of magnitude of 108 Hz, and the input Signal-to-Noise Ratio threshold can be -20 dB.
Key words: low signal-to-noise ratio signal detection chaotic oscillator system Binary Phase Shift Keying high frequency
DOI：10.11916/j.issn.1005-9113.2012.06.016
Clc Number:TN911.23
Fund:
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An innovative detection method of high frequency BPSK signal with low signal-to-noise ratio
本站小编 哈尔滨工业大学/2019-10-23
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