Results 11 to 20 of about 5,925,887 (294)

Deep Learning Assisted Pre-Carrier Phase Recovery EVM Estimation for Coherent Transmission Systems [PDF]

, 2021
We exploit deep supervised learning and amplitude histograms of coherent optical signals captured before carrier phase recovery (CPR) to perform time-sensitive and accurate error vector magnitude (EVM) estimation for 32 Gbaud mQAM signal monitoring ...
Udalcovs, Aleksejs, Pang, Xiaodan, Fan, Yuchuan,, Ozolins, Oskars, Sergei Popov, Carlos Natalino, Schatz, Richard,, Richard Schatz, Popov, Sergei,, Aleksejs Udalcovs, Furdek Prekratic, Marija,, Udalcovs, Aleksejs,, Natalino Da Silva, Carlos, Yuchuan Fan, Xiaodan Pang, Oskars Ozolins, Furdek Prekratic, Marija, Pang, Xiaodan,, Popov, Sergei, Marija Furdek, Fan, Yuchuan, Schatz, Richard, Natalino Da Silva, Carlos,, Ozolins, Oskars,   +23 more
core   +4 more sources

Carrier-Assisted Phase Retrieval

, 2021
Phase-retrieval (PR) schemes based on the modified Gerchberg-Saxton (GS) algorithm capture the full-field employing a dispersive element and intensity-only measurements to eliminate the use of a local oscillator.
Qi Wu (11829659)
core   +1 more source

Benchmarking of Carrier Phase Recovery Circuits for M-QAM Coherent Systems

, 2021
We benchmark blind carrier phase recovery DSP circuits in terms of SNR penalty, power dissipation, latency, area usage, and cycle slip probability, to identify optimal implementations for 16, 64, and ...
B\uf6rjeson, Erik, Larsson-Edefors, Per
core   +2 more sources

Performance evaluation of carrier interferometry implementations of MC-CDMA over a wideband channel suffering phase noise [PDF]

, 2005
In this paper the performance of Carrier Interferometry (CI) and Pseudo-Orthogonal Carrier Interferometry (PO-CI) [1] implementations of Multi-Carrier Code Division Multiple Access (MC-CDMA) are investigated.
Taylor, N, Cooper, MA, McGeehan, JP, Armour, SMD, M.A. Cooper, S.M.D. Armour, N. Taylor, J.P. McGeehan   +7 more
core   +1 more source

Research on Improved Costas Loop for High-order QAM [PDF]

Jisuanji gongcheng, 2017
In order to improve convergence speed and tracking stability for high-order Quadrature Amplitude Modulation(QAM) demodulation carrier recovery,a new kind of Costas loop is designed based on software radio thought and the basic principle of traditional ...
ZHOU Shengyuan,PAN Huilan
doaj   +1 more source

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
Aditya Kakkar, Ozolins, Oskars, Navarro, Jaime Rodrigo, Jaime Rodrigo Navarro, Sergei Popov, Jacobsen, G., Popov, Sergei Yu,, Xiaodan Pang, Oskars Ozolins, Pang, Xiaodan,, Popov, Sergei, Schatz, Richard, Olmedo, Miguel Iglesias,, Pang, Xiaodan, Darko Zibar, Iglesias Olmedo, Miguel, Miguel Iglesias Olmedo, Kakkar, Aditya,, Schatz, Richard,, Richard Schatz, Zibar, D., Kakkar, Aditya, Zibar, Darko, Gunnar Jacobsen, Ozolins, O., Jacobsen, Gunnar, Navarro, J. R., Popov, Sergei,, Navarro, Jaime Rodrigo,, Zibar, Darko,, Ozolins, Oskars,, Jacobsen, Gunnar,   +31 more
core   +1 more source

Interplay of Probabilistic Shaping and Carrier Phase Recovery for Nonlinearity Mitigation [PDF]

2020 European Conference on Optical Communications (ECOC), 2020
The manuscript has been submitted to the 2020 European Conference on Optical Communication (ECOC 2020)
Civelli S., Forestieri E., Secondini M.
openaire   +3 more sources

A Photonics-Assisted Binary/Quaternary Phase-Coded Microwave Signal Generator Applicable to Digital I/O Interfaces

Micromachines, 2023
A photonics-assisted binary/quaternary phase-coded microwave signal generator with fundamental/doubling reconfigurable carrier frequency applicable to digital I/O interfaces is proposed and has been verified by experiments.
Jing Yin, Yan Zhao, Feng Yang, Dengcai Yang, Xiaoyu Wang   +4 more
doaj   +1 more source

Iterative Carrier Phase Recovery Suited to Turbo-Coded Systems [PDF]

IEEE Transactions on Wireless Communications, 2004
This paper examines the problem of carrier phase recovery in turbo-coded systems. We introduce a new concept of "a priori probability aided phase estimation", where the extrinsic information (log-likelihood ratio) obtained from turbo decoder is used to aid an iterative phase estimation process, which is based on a maximum-likelihood strategy. The phase
Zhang, L, Burr, A G
openaire   +3 more sources

Simulasi Sinkronisasi Carrier pada Modulasi Digital menggunakan Matlab

Jurnal Elkomika, 2014
ABSTRAKDalam sistem komunikasi digital, salah satu manfaat teknik pengkodean adalah sebagai efisiensi bandwidth. Pada kanal komunikasi, adanya noise akan mengganggu dan  menurunkan kinerja sistem komunikasi digital.
DWI ARYANTA, ARSYAD RAMADHAN DARLIS, WIRDA SRI FARHANI   +2 more
doaj   +1 more source