Comparison results of stochastic resonance effects realised by coherent and non‐coherent receivers under Gaussian noise. Issue 8 (31st May 2017)

• Record Type: Journal Article
• Authors: Liang, Linlin; Li, Zan; Liu, Jin; Zhang, Nina; Qi, Peihan
• Is Part Of: IET communications. Volume 11:Issue 8(2017)
• Page Start: 1180
• Page End: 1186
• Publication Date: 2017-05-31
• Subjects: Gaussian noise -- approximation theory -- error statistics -- signal processing; stochastic resonance effects -- noncoherent receivers -- Gaussian noise -- binary pulse amplitude modulation -- signal‐to‐noise ratio -- parameter tuned stochastic resonance -- SR -- digital communications system -- analytical framework -- probability density function -- Ornstein‐Uhlebeck noise -- central limit theorem -- bit error rate -- signal processing -- background noise; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2016.0755
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : To boost the performance of binary pulse amplitude modulation at low signal‐to‐noise ratio, the parameter‐tuned stochastic resonance (SR) is introduced into digital communications system. In this study, an analytical framework is developed for evaluating the system performance by approximating the probability density function of the Ornstein–Uhlebeck noise based on the central limit theorem. Expression for the bit error rate of the bistable SR system with coherent receiver is derived. Theoretical and numerical results are presented to verify the analysis that the noise can improve the performance of the SR system with non‐coherent receiver. Also, it is shown that the performance of the bistable SR system with coherent receiver is superior to that with non‐coherent receiver, and the background noise is not favourable to signal processing in the coherent receiver.