Results 11 to 20 of about 39,265 (303)

Theoretical performance comparison between reference-based coherent BPSK and BCH coded differential BPSK [PDF]

open access: yes, 1992
Both channel sounding and channel coding are well-known techniques for improving bit error rate (BER) performance of data transmission over a narrowband mobile radio channel.
Bateman, A, Li, M, McGeehan, JP
core   +2 more sources

Modernization of DVB-S2 Standard Using Signal-Code Constructions Based on Amplitude Modulation of Many Components [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2020
It is proposed to modernize the DVB-S2 standard by using AMMC (amplitude modulation of many components) signals instead of 8PSK (8-phase shift keying) and APSK (amplitude-phase shift keying) signals, and to modernize the DVB-S2 standard equipment by ...
Ivan Horbatyi, Yevhen Yashchyshyn
doaj   +1 more source

Performance of Reconfigurable-Intelligent-Surface-Assisted Satellite Quasi-Stationary Aircraft–Terrestrial Laser Communication System

open access: yesDrones, 2022
This paper proposes the use of quasi-stationary aircraft and reconfigurable intelligent surfaces (RIS) to improve the system performance in satellite–terrestrial laser communication downlink.
Yi Wang, Haibo Wang, XueWen Jiang
doaj   +1 more source

Reconfigurable Photonic Generation of Binary Modulated Microwave Signals

open access: yesIEEE Photonics Journal, 2020
A novel photonic scheme of binary modulated microwave signals generation based on a dual-polarization quadrature phase-shift keying (DP-QPSK) modulator is proposed and experimentally demonstrated.
Jialin Ma   +4 more
doaj   +1 more source

Line-of-sight quantum key distribution with differential phase shift keying

open access: yesNew Journal of Physics, 2022
Free-space optical (FSO) links offer a practical approach to realize quantum key distribution (QKD) in a global scale. However, when one wants to further extend the distance from the geostationary orbit to the ground, currently known QKD schemes cannot ...
Hiroyuki Endo   +5 more
doaj   +1 more source

Error-bound formulation for multichannel reception of M-DPSK and pilot-aided M-PSK over Rayleigh-fading channels with postdetection combining [PDF]

open access: yes, 2004
Upper bounds for symbol-error probability are developed for multichannel reception of M-ary phase-shift keying (M-PSK) over frequency-flat Rayleigh-fading channels.
Chow, YC, McGeehan, JP
core   +2 more sources

Near-Capacity Turbo Coded Soft-decision Aided DAPSK/Star-QAM [PDF]

open access: yes, 2011
Low-complexity non-coherently detected Differential Amplitude and Phase-Shift Keying (DAPSK) schemes constitute an ideal candidate for wireless communications.
Hanzo, Lajos, Liang, Dandan, Ng, Soon
core   +1 more source

Analysis of modulation and demodulation mode of voice signal in mine through-the-earth communicatio

open access: yesGong-kuang zidonghua, 2017
According to characteristics of various modulation and demodulation modes, bit error rate of modulation modes including binary amplitude shift keying, binary frequency shift keying and binary differential phase shift keying under different demodulation ...
YIN Siyu, TAO Jinyi, LYU Ji, WU Rui
doaj   +1 more source

Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel [PDF]

open access: yes, 2011
In this paper, analytical and simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for a free space optical (FSO) communication link ...
C.G. Lee   +5 more
core   +1 more source

DAC-Less amplifier-less generation and transmission of QAM signals using sub-volt silicon-organic hybrid modulators [PDF]

open access: yes, 2015
We demonstrate generation and transmission of optical signals by directly interfacing highly efficient silicon-organic hybrid (SOH) modulators to binary output ports of a field-programmable gate array. Using an SOH Mach-Zehnder modulator (MZM) and an SOH
Bogaerts, Wim   +10 more
core   +3 more sources

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