Results 1 to 10 of about 1,345 (198)
A Novel Sample Based Quadrature Phase Shift Keying Demodulator [PDF]
The Scientific World Journal, 2014 This paper presents a new practical QPSK receiver that uses digitized samples of incoming QPSK analog signal to determine the phase of the QPSK symbol.
Asraf Mohamed Moubark +1 more
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Single-photon frequency shifting with a quadrature phase-shift keying modulator [PDF]
Scientific Reports, 2021 Deterministic frequency manipulation of single photons is an essential tool for quantum communications and quantum networks. We demonstrate a 15.65 GHz frequency shift for classical and nonclassical light using a commercially available quadrature phase ...
Changchen Chen +3 more
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Performance analysis and optimization of modulation techniques for underwater optical wireless communication in varied aquatic environments [PDF]
Scientific ReportsUnderwater Optical Wireless Communication (UOWC) has emerged as a promising technology for enabling high-speed and low-latency data transmission in aquatic environments.
M. Mokhtar Zayed, Mona Shokair
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Computers, 2022 This study proposed a two-stage method, which combines a convolutional neural network (CNN) with the continuous wavelet transform (CWT) for multiclass modulation classification. The modulation signals’ time-frequency information was first extracted using
Ahmed Mohammed Abdulkarem +8 more
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Performance Analysis of Hybrid Phase Shift Keying over Generalized Nakagami Fading Channels
Journal of Telecommunications and Information Technology, 2023 In addition to the benefits of hybrid phase shift keying (HPSK) modulation in reducing the peak to average power ratio of the transmitted signal to reduce the zero cross- ings and the 0◦-degree phase transmissions, HPSK enhances the bit error rate (BER)
Mahmoud Youssuf , Mohamed Z. Abdelmageed
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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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Differential-quadrature-phase-shift quantum key distribution [PDF]
Physical Review A, 2009 This paper presents a quantum key distribution (QKD) protocol named differential-quadrature-phase-shift (DQPS) QKD. A transmitter sends a coherent pulse train in which each pulse is phase modulated by ${0,\ensuremath{\pi}}$ ${\ensuremath{\pi}/2,3\ensuremath{\pi}/2}$, and a receiver measures it with either one of two asymmetric Mach-Zehnder ...
Kyo Inoue, Yuuki Iwai
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Average BER performance of MPSK with noisy phase reference in Nakagami‐m fading channel
Electronics Letters, 2021 This letter derives an approximate average bit error rate (BER) expression of M‐ary phase shift keying with a noisy phase reference in a Nakagami‐m fading channel.
Yeonsoo Jang
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50 Gbit/s real-time test environment for integrated photonic DQPSK receivers [PDF]
Advances in Radio Science, 2014 In this paper an FPGA-based test system for high-speed transmission experiments with integrated photonic receivers is presented. Pseudorandom binary sequences are generated inside the FPGA and encoded as either differential quadrature phase shift keying (
T. Föhn, C. Fischer, M. Berroth
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Benefits and Limits of Modulation Formats for Optical Communications
Advances in Electrical and Electronic Engineering, 2014 This paper is focused on benefits and limits of intensity and phase modulation formats used in optical communications. The simulation results are obtained using OptSim software environment, employing Time Domain Split Step method.
Rajdi Agalliu, Michal Lucki
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