Simultaneous channel estimation and signal detection in wireless ultraviolet communications combating inter-symbol-interference

Wei, Zhuangkun; Hu, Wenxiu; Han, Dahai; Zhang, Min; Li, Bin; Zhao, Chenglin

Abstract

One primary challenge in wireless ultraviolet communications (UVCs) is the inter-symbol-interference (ISI), which may block the detection of current informative signal, especially when channel-related characteristics are unknown. In this paper, we propose a UV channel-related Bayesian scheme that can simultaneously estimate the channel characteristics and detect informative signals, which therefore can address the ISI disturbance. By investigating the UV single-scattering photon model, the dynamic behaviors of the channel state information (CSI), which involve the uncertain signal and the unknown channel parameters are formulated. Hence, a sequential Bayesian process is suggested to estimate the UV CSI. Numerical analysis shows that the proposed scheme can obtain a promising estimation performance (i.e., the relative errors are less than 4%), and gain an extra 4dB detection performance compared with imperfect maximum-likelihood sequence detection (MLSD) scheme.

Citation

Wei, Z., Hu, W., Han, D., Zhang, M., Li, B., & Zhao, C. (2018). Simultaneous channel estimation and signal detection in wireless ultraviolet communications combating inter-symbol-interference. Optics Express, 26(3), 3260-3270. https://doi.org/10.1364/oe.26.003260

• Journal Article Type: Article
• Online Publication Date: Jan 30, 2018
• Publication Date: Feb 5, 2018
• Deposit Date: Feb 12, 2025
• Journal: Optics Express
• Electronic ISSN: 1094-4087
• Publisher: Optica
• Peer Reviewed: Peer Reviewed
• Volume: 26
• Issue: 3
• Pages: 3260-3270
• DOI: https://doi.org/10.1364/oe.26.003260
• Public URL: https://durham-repository.worktribe.com/output/3479564