Results 41 to 50 of about 1,504,963 (315)
Towards underwater coherent optical wireless communications using a simplified detection scheme.
Optics Express, 2021 In this paper, an effective method of underwater coherent optical wireless communication (UCOWC) with a simplified detection scheme is proposed. The proof-of-concept experiments with M-ary PSK have been conducted with a common laser used for the signal ...
Xinke Tang +7 more
semanticscholar +1 more source
Covert Communications With a Full-Duplex Receiver in Non-Coherent Rayleigh Fading
IEEE Transactions on Communications, 2021 In a majority of research on covert communications, knowledge about channel state information (CSI) of main channel and/or warden channel is assumed to be known or partially known.
Mengfan Zheng +2 more
semanticscholar +1 more source
Applied Sciences, 2019 In this article, we review the latest progress on data center interconnect (DCI). We then discuss different perspectives on the 400G pluggable module, including form factor, architecture, digital signal processing (DSP), and module power consumption ...
Yang Yue, Qiang Wang, Jon Anderson
doaj +1 more source
Adaptive Pre/Post-Compensation of Cascade Filters in Coherent Optical Transponders
Future Internet, 2020 We propose an adaptive joint pre- and post-compensation to correct the filtering effects caused by cascading reconfigurable optical add drop multiplexers (ROADMs).
Ahmad Abdo, Claude D’Amours
doaj +1 more source
Adaptive Coherent Receiver Settings for Optimum Channel Spacing in Gridless Optical Networks
Future Internet, 2019 In this paper, we propose a novel circuit and system to optimize the spacing between optical channels in gridless (also called flexible-grid or elastic) networking.
Ahmad Abdo +4 more
doaj +1 more source
Applied Sciences, 2021 The Gram–Schmidt orthogonalization procedure (GSOP) and Löwdin symmetric orthogonalization procedure (SYOP) are the two mainstream algorithms for the compensation of phase mismatch in an imperfect optical 90° hybrid.
Xueliang Li +4 more
doaj +1 more source
Physical Layer Authentication for Non-Coherent Massive SIMO-Enabled Industrial IoT Communications [PDF]
IEEE Transactions on Information Forensics and Security, 2020 Achieving ultra-reliable, low-latency and secure communications is essential for realizing the industrial Internet of Things (IIoT). Non-coherent massive multiple-input multiple-output (MIMO) is one of promising techniques to fulfill ultra-reliable and ...
Zhifang Gu +4 more
semanticscholar +1 more source
Clock Recovery Challenges in DSP-Based Coherent Single-Mode and Multi-Mode Optical Systems
Future Internet, 2018 We present an analysis of clock recovery algorithms in both polarization division multiplexing systems and mode division multiplexing systems. The impact of inter-polarization time skew and polarization mode dispersion in single-mode fibers, as well as ...
Júlio César Medeiros Diniz +2 more
doaj +1 more source
IEEE Photonics Journal, 2010 In this paper, we propose a nonuniform coded-modulation format based on iterative polar quantization (IPQ) as a scheme to enable achieving channel capacity in ultrahigh-speed optical communication systems.
Hussam G. Batshon +3 more
doaj +1 more source
End-to-End Optimization of Coherent Optical Communications Over the Split-Step Fourier Method Guided by the Nonlinear Fourier Transform Theory [PDF]
Journal of Lightwave Technology, 2020 Optimizing modulation and detection strategies for a given channel is critical to maximizing the throughput of a communication system. Such an optimization can be easily carried out analytically for channels that admit closed-form analytical models ...
S. Gaiarin +3 more
semanticscholar +1 more source