Results 21 to 30 of about 296,485 (288)
Photonics, 2022 In this paper, we propose an Extended Kalman Filtering with phase noise reconstruction (EKF-PC) scheme to enhance the carrier recovery capability for probabilistic shaping of coherent optical communication systems with various shaping factors.
Shiqun Zhang, Jiarun Yan, Zhiping Huang
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Close-form expression of one-tap normalized LMS carrier phase recovery in optical communication systems [PDF]
, 2016 The performance of long-haul high speed coherent optical fiber communication systems is significantly degraded by the laser phase noise and the equalization enhanced phase noise (EEPN).
Jacobsen, G +5 more
core +3 more sources
International Journal of Reconfigurable Computing, 2014 This paper presents an efficient all digital carrier recovery loop (ADCRL) for quadrature phase shift keying (QPSK). The ADCRL combines classic closed-loop carrier recovery circuit, all digital Costas loop (ADCOL), with frequency feedward loop, maximum ...
Kaiyu Wang +4 more
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Transport behavior of thorium(IV) in a continuous-flow liquid membrane containing Di-(2-ethylhexyl) phosphonic acid [PDF]
مجله علوم و فنون هستهای, 2020 As a step towards the development of liquid membrane technology for the recovery of thorium from dilute solutions, the article investigates transport behavior of Th(IV) from a feed (solution) phase containing 0.0001M hydrochloric acid (HCl) into a ...
S.A. Milani, F. Zahakifar
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Channel Estimation, Carrier Recovery, and Data Detection in the Presence of Phase Noise in OFDM Relay Systems [PDF]
, 2016 Due to its time-varying nature, oscillator phase noise can significantly degrade the performance of channel estimation, carrier recovery, and data detection blocks in high-speed wireless communication systems.
Hani Mehrpouyan +4 more
core +2 more sources
IEEE Photonics Journal, 2013 Differentially encoding and frequency offset compensating for a 16-quadrature amplitude modulation (16-QAM) vector signal in 60-GHz millimeter-wave radio-over-fiber (RoF) systems are experimentally investigated.
A.-L. Yi +7 more
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Sistem Modulator dan Demodulator BPSK dengan Costas Loop
Techne, 2015 Pada tulisan ini akan dibahas suatu sistem transmisi data berbasis BPSK (Binary Phase Shift Keying) menggunakan Costas Loop pada demodulatornya. Pada prinsipnya Costas Loop adalah bentuk khusus dari PLL yang difungsikan untuk melakukan demodulasi sinyal ...
Budihardja Murtianta
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Phase noise tolerant carrier recovery scheme for 28 Gbaud circular 16QAM [PDF]
, 2015 We propose a novel carrier phase recovery scheme for circular 16QAM coherent transmission systems. Experimental results show low penalties (<1.4 dB) even for linewidths where square 16QAM exhibits irretrievable (above the FEC limit) error floor.
Iglesias Olmedo, Miguel +8 more
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Phase-coherent lightwave communications with frequency combs [PDF]
, 2019 Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber bandwidth, and coherent detection enables the use of sophisticated modulation ...
Andrekson, Peter A. +7 more
core +2 more sources
Performance of qpsk system in the presence of pulse interference and noisy carrier reference signal [PDF]
Serbian Journal of Electrical Engineering, 2003 The aim of this paper is the determining the system performance in detecting the QPSK signal. The error probability is determined when the signal, Gaussian noise, pulse interference and imperfect carrier phase recovery are taken into consideration. Phase
Stefanović Mihajlo +2 more
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