Results 21 to 30 of about 18,013 (228)
Investigation of a novel structure for 6PolSK-QPSK modulation
EURASIP Journal on Wireless Communications and Networking, 2017 Benefiting from the high spectrum efficiency and power efficiency, 6PolSK-QPSK (6-ary polarization-shift keying quadrature phase-shift keying) is a promising modulation format in coherent optical communication.
Yupeng Li +3 more
doaj +1 more source
IEEE Access, 2021 In order to pursue rapid development of the new generation of wireless communication systems and elevate their security and efficiency, this paper proposes a novel scheme for automatic dual determination of modulation types and signal to noise ratios ...
Tarik Adnan Almohamad +5 more
doaj +1 more source
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
doaj +1 more source
All-Optical Regeneration and Format Conversion for 4APSK Signals Based on Nonlinear Effects in HNLF
IEEE Photonics Journal, 2023 An all-optical format conversion and regeneration scheme about 4-ary amplitude and phase shift keying (4APSK) signals is proposed and numerically simulated based on nonlinear effects in the high nonlinear fiber (HNLF).
Qiankun Li +5 more
doaj +1 more source
KNN BASED CLASSIFICATION OF DIGITAL MODULATED SIGNALS
International Islamic University Malaysia Engineering Journal, 2016 Demodulation process without the knowledge of modulation scheme requires Automatic Modulation Classification (AMC). When receiver has limited information about received signal then AMC become essential process. AMC finds important place in the field many
Sajjad Ahmed Ghauri
doaj +1 more source
International Journal of Electrical and Computer Engineering (IJECE), 2023 A single-phase/single-loop multiple-phase-shift-keying (<em><span lang="EN-US">m</span></em><span lang="EN-US">-PSK)</span><span lang="EN-US"> demodulator is described. The demodulator relies on a linear range of an exclusive-OR (XOR) gate employed as a phase detector.
Apinut Kaewmunee, Phanumas Khumsat
openaire +1 more source
IEEE Photonics Journal, 2016 We demonstrate the codesign and cointegration of an ultracompact silicon photonic receiver and a low-power-consumption (155 mW/channel) two-channel linear transimpedance amplifier array.
J. Zhang +10 more
doaj +1 more source
OFDM With Double Quadrature Signed Index Shift Keying
IEEE Access, 2023 Spectral, and energy-efficient, communication is essential for the current and future wireless communication generations. Therefore a novel OFDM with double quadrature signed index shift keying (OFDM-DQSISK) is proposed.
Hany S. Hussein, Mohammed Farrag
doaj +1 more source
IET Optoelectronics, 2009 The performance of a scheme for all-optical regeneration of differential quadrature phase-shift keying (DQPSK) and quadrature phase-shift keying signals using phase-sensitive amplifiers (PSAs) is investigated through numerical simulation. The results show that both phase and amplitude noises of 40 Gb/s RZ-DQPSK signals are significantly suppressed ...
J. Yan, L. An, Z. Zheng, X. Liu
openaire +1 more source
Digital coherent receiver for phase modulated radio-over-fibre optical links [PDF]
, 2009 A novel digital signal processing-based coherent receiver for phase-modulated radio-over-fiber (RoF) optical links is presented and demonstrated experimentally.
Jeppesen, Palle +4 more
core +1 more source