Results 11 to 20 of about 23,404 (169)
Efficient On-Off Keying Underwater Acoustic Communication for Seafloor Observation Networks
Applied Sciences, 2020 In the cableless seafloor observation networks (SONs), the links among network nodes rely on underwater acoustic communication (UAC). Due to the energy constraint and the high-reliability requirement of the cableless SONs, the noncoherent UAC has been a ...
Yan Yao +4 more
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Wavelet—Artificial Neural Network Receiver for Indoor Optical Wireless Communications [PDF]
, 2011 The multipath induced intersymbol interference (ISI) and fluorescent light interference (FLI) are the two most important system impairments that affect the performance of indoor optical wireless communication (OWC) systems.
Angelova, Maia +2 more
core +1 more source
An Energy Efficient Modulation Scheme for Body-Centric Terahertz (THz) Nanonetworks
Technologies, 2019 In body-centric communications, energy efficiency is a critical performance metric, while the achievable data rate is not of primary concern. In this paper we present a novel modulation scheme, which can be efficiently used in body-centric terahertz (THz)
Apostolos K. Vavouris +5 more
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ICT Express, 2022 In this letter, a new nanocommunication modulation scheme termed multi-level pulse position modulation (ML-PPM) is proposed. The ML-PPM approach will boost the link capacity of a nanocommunication system while achieving a processing gain in reception ...
Pankaj Singh, Sung-Yoon Jung
doaj +1 more source
A study of discrete wavelet transform based denoising to reduce the effect of artificial light interferences for indoor optical wireless communication [PDF]
, 2010 The optical power penalty (OPP) due to the artificial light interferences (ALIs) can be significantly high in an indoor optical wireless communication (OWC) channel making such link practically infeasible.
Angelova, Maia +2 more
core +1 more source
Demonstration of 80 Gbps NRZ-OOK electro-absorption modulation of InP-on-Si DFB laser diodes [PDF]
, 2019 High-speed electro-absorption modulation of a heterogeneously integrated InP-on-Si DFB laser diode is used for the transmission of an 80 Gbps NRZ-OOK signal over 2 km of NZ-DSF link below the hard-decision forward-error-correction threshold. (C) 2019 The
Abbasi, Amin +11 more
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Combining OOK with PSM Modulation for Simple Transceiver of Orthogonal Pulse-Based TH-UWB Systems
EURASIP Journal on Wireless Communications and Networking, 2008 This paper describes a combined modulation scheme for time-hopping ultra-wideband (TH-UWB) radio systems by using on-off keying (OOK) and pulse-shape modulation (PSM). A set of orthogonal pulses is used to represent bits in a symbol.
Paul Richardson +3 more
doaj +2 more sources
IEEE Photonics Journal, 2009 The transmission performance of a free-space optical (FSO) link could be severely degraded due to atmospheric turbulence, which causes the temporal and spatial fluctuation of light intensity.
Zixiong Wang +3 more
doaj +1 more source
Photonics, 2022 Directly modulated 850-nm multimode vertical-cavity surface-emitting lasers (MM-VCSELs) with different oxide apertures and transmission microstrip lengths are compared on the transmission performance of the non-return-to-zero on-off keying (NRZ-OOK) and ...
Jui-Hung Weng +7 more
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Experimental investigation of the performance of different modulation techniques under controlled FSO turbulence channel [PDF]
, 2011 This paper experimentally investigates and compares the performance of the free space optics system employing three different modulation schemes, on-off keying (OOK) with nonreturn- to-zero (NRZ) and return-to-zero (RZ) and the binary phase shift keying (
Adebanjo, Olusegun +5 more
core +1 more source