Results 11 to 20 of about 798,880 (216)
Gigabit/s Photonic Generation, Modulation, and Transmission for a Reconfigurable Impulse Radio UWB Over Fiber System [PDF]
IEEE Photonics Journal, 2012 We propose and demonstrate a flexible and high-speed impulse radio ultrawideband (IR-UWB) over fiber system using various modulation schemes. Two kinds of fully Federal Communication Commission (FCC) compliant UWB pulses are produced, which is based on ...
Pengxiao Li +3 more
doaj +2 more sources
Feasibility study for high bit rate pulse position modulation in fibre communications [PDF]
, 2013 With the rapid progress of optical communication systems, capacity limitation becomes important in high bit rate links. Overcoming this limitation may involve using different modulation and multiplexing methods, including RZ modulation with on-off keying
Ji, Feiyue
core +6 more sources
Enhancing BPSK and OOK modulations using hybrid 2BPSK-OOK technique for optical fiber communications systems [PDF]
2014 16th International Conference on Transparent Optical Networks (ICTON), 2014 A hybrid 2 slots binary phase shift keying-on off keying (hybrid 2BPSK-OOK) scheme is proposed as a new modulation technique to improve the performance of both conventional binary phase shift keying (BPSK) and on-off (OOK) modulation techniques in optical fiber communications systems.
Hossam A. I. Selmy +2 more
openaire +2 more sources
Cost efficient directly modulated DPSK downstream transmitter and colourless upstream remodulation for full-duplex WDM-PONs [PDF]
, 2010 We implement a cost efficient 10.7 Gb/s directly modulated DPSK transmitter in a bidirectional WDM-PON, which also remodulates the downstream phase encoded signal for 2.5 Gb/s OOK upstream ...
Anandarajah, Prince M. +2 more
core +3 more sources
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
doaj +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
doaj +1 more source
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
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
doaj +1 more source