Results 21 to 30 of about 4,644,594 (299)
Mitigating the Impact of Noise on Nonlinear Frequency Division Multiplexing
Applied Sciences, 2020 In the past years, nonlinear frequency division multiplexing (NFDM) has been investigated as a potentially revolutionary technique for nonlinear optical fiber communication.
Stella Civelli +2 more
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Time Reverse Equalization Algorithm for 16 QAM Coherent Optical Communication Systems
IEEE Access, 2021 The high speed rotation of state of polarization (RSOP) is a key issue for 16 quadrature amplitude modulation (QAM) coherent optical polarization division multiplexing (PDM) communication systems in strong lightning weather. To reduce the bit error rate (
Junxiong Zhang, Weimin Wu, Xiaohu Ge
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Coherent polarization shift keying modulated free space optical links over a Gamma-Gamma turbulence channel [PDF]
, 2011 Problem statement: The optical signal propagating through the Free Space Optical (FSO) channel suffers from irradiance and phase fluctuations caused by the atmospheric turbulence, which results in Bit Error Rate (BER) performance degradation ...
Ghassemlooy, Zabih +7 more
core +1 more source
FPGA-Based Rate-Compatible LDPC Codes for the Next Generation of Optical Transmission Systems
IEEE Photonics Journal, 2016 In this paper, we propose a rate-compatible forward error-correcting (FEC) scheme based on low-density-parity check (LDPC) codes together with its software reconfigurable unified field-programmable gate array (FPGA) architecture.
Ding Zou, Ivan B. Djordjevic
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Applied Sciences, 2020 Coherent optical transceivers offer significant advantages over direct-detect optical transceivers. However, both intradyne coherent transmitters (ICT) and intradyne coherent receivers (ICR) are more complicated and require careful calibration ...
Qiang Wang, Yang Yue
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Sensors, 2023 In free-space optical (FSO) communication systems, on–off keying (OOK) is a widely used modulation format. Coherent and non-coherent OOK receivers with sensitivities of −54.60 dBm and −51.25 dBm, respectively, were built with a communication rate of 1 ...
Weijie Ren +3 more
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Polar-Coded Non-Coherent Communication [PDF]
IEEE Communications Letters, 2021 A polar-coded transmission (PCT) scheme with joint channel estimation and decoding is proposed for channels with unknown channel state information (CSI). The CSI is estimated via successive cancellation (SC) decoding and the constraints imposed by the frozen bits.
Peihong Yuan +2 more
openaire +3 more sources
IEEE Photonics Journal, 2012 This paper describes and demonstrates a single-shot, full-field (amplitude and phase) optical waveform measurement technique that utilizes interferometry, frequency-to-time mapping, and four-quadrature coherent detection.
Ryan P. Scott +3 more
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Rhythms for Cognition: Communication through Coherence [PDF]
Neuron, 2015 I propose that synchronization affects communication between neuronal groups. Gamma-band (30-90 Hz) synchronization modulates excitation rapidly enough that it escapes the following inhibition and activates postsynaptic neurons effectively. Synchronization also ensures that a presynaptic activation pattern arrives at postsynaptic neurons in a ...
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Advanced Chromatic Dispersion Compensation in Optical Fiber FBMC-OQAM Systems
IEEE Photonics Journal, 2017 We report on several methods for the chromatic dispersion (CD) compensation in optical fiber offset-QAM-based filterbank multicarrier (FBMC-OQAM) systems.
Francois Rottenberg +4 more
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