Results 21 to 30 of about 39,265 (303)
Wasit Journal of Engineering Sciences, 2019 Phase shift keying modulation approaches are widely used in the communication industry. Differential phase shift keying (DPSK) and Offset Quadrature phase shift keying (OQPSK) schemes are chosen to be investigated is multi environment channels, where ...
Fatima faydhe Al- Azzawi +2 more
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Short-range ultrasonic communications in air using quadrature modulation [PDF]
, 2009 A study has been undertaken of ultrasonic communications methods in air, using a quadrature modulation method. Simulations were first performed to establish the likely performance of quadrature phase shift keying over the limited bandwidth available in ...
Green, Roger, Hutchins, David A., Li, C.
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Российский технологический журнал, 2019 The energy and spectral advantages of signals with phase shift keying predetermined their widespread use in modern digital navigation, communications and television systems. The use of such signals is the base of communication standards of DVB-S, DVB-S2 /
Gennady V. Kulikov +2 more
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Generalized PSK in Space Time Coding [PDF]
, 2004 A wireless communication system using multiple antennas promises reliable transmission under Rayleigh flat fading assumptions. Design criteria and practical schemes have been presented for both coherent and non-coherent communication channels.
Han, Guangyue
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, 2014 Using an auxiliary random variable technique, we prove that binary differential phase-shift keying and binary phase-shift keying have the same asymptotic bit-error rate performance in lognormal fading channels.
Alouini, Mohamed-Slim +2 more
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Performance of Coherent Optical MPSK in Underwater Turbulent Channels With Phase Errors
IEEE Photonics JournalCompared to intensity modulation with direct detection, coherent detection offers superior receiver sensitivity, higher spectral efficiency, and better background noise suppression.
Jiashun Hu +4 more
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Effect of Nonlinear Phase Variation in Optical Millimetre Wave Radio over Fibre Systems [PDF]
Journal of Electrical and Computer Engineering Innovations, 2015 In this paper, we propose an optical millimetre wave radio-over-fibre (mm-wave RoF) system that uses a dual drive Mach Zehnder modulator (DD-MZM), which is biased at the maximum transmission biasing point, to generate an optical double sideband ...
A. Bahrami +3 more
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A Novel 32-Point Modulation Scheme of 6PolSK-QPSK Signal
IEEE Access, 2023 The six-polarization shift keying quadrature (6PolSK-QPSK) has been proved to be an alternative to four-dimensional (4D) modulation scheme. A variety of transmission compensation schemes have been developed for 24-Point 6PolSK-QPSK combining the ...
Yupeng Li +7 more
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Large-Alphabet Encoding Schemes for Floodlight Quantum Key Distribution [PDF]
, 2017 Floodlight quantum key distribution (FL-QKD) uses binary phase-shift keying (BPSK) of multiple optical modes to achieve Gbps secret-key rates (SKRs) at metropolitan-area distances.
Shapiro, Jeffrey H. +2 more
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Digital Binary Phase-shift Keyed Signal Detector [PDF]
International Journal of Engineering, 2019 We have developed the effective algorithm for detecting digital binary phase-shift keyed signals. This algorithm requires a small number of arithmetic operations over the signal period. It can be relatively easy implemented based on the modern programmable logic devices.
Golpaiegani, Leila A. +4 more
openaire +2 more sources