Low power digital signal processing-lite scheme for short-reach polarization demultiplexing-64 quadrature amplitude modulation coherent optical system

Q Li, W Ji, P Li, P Liu, F Liu, Y Wang… - Optical …, 2023 - spiedigitallibrary.org
Coherent optical communication critically relies on efficient digital signal processing (DSP).
We demonstrate a lite DSP scheme to reduce the transmission cost and power consumption …

Modified constant modulus algorithm with polarization demultiplexing in Stokes space in optical coherent receiver

Z Yu, X Yi, J Zhang, M Deng… - Journal of lightwave …, 2013 - ieeexplore.ieee.org
We propose a modified method of constant modulus algorithm (CMA) based on polarization
demultiplexing in Stokes space for polarization demultiplexing (SS-PDM) in optical coherent …

Method and apparatus for algorithm on flexible square-QAM coherent detection

J Yu, B Huang - US Patent 9,270,513, 2016 - Google Patents
In Software defined elastic optical networks, modulation format and constellation size may
be flexibly modified. As a result, digital signal processing (DSP) algorithm should be …

Low complexity DBP with phase linear approximation for DP-16QAM coherent optical communication systems

S Takano, H Uenohara - IEICE Communications Express, 2019 - jstage.jst.go.jp
We numerically assess the performance and computational complexity of split-step Fourier
method based digital backpropagation (DBP) with phase linear approximation (PLA-DBP) …

Performance analyses of polarization demultiplexing based on constant-modulus algorithm in digital coherent optical receivers

K Kikuchi - Optics Express, 2011 - opg.optica.org
In the digital coherent optical receiver, we can achieve polarization demultiplexing in the
digital domain, using a two-by-two matrix controlled by the constant-modulus algorithm …

Digital Signal Processing of POL-QAM and SP-QAM in Long-Haul Optical Transmission Systems

D Zhang - 2014 - spectrum.library.concordia.ca
Coherent detection employing high modulation formats has become one of the most
attractive technologies for long-haul transmission systems due to the high power and …

A modified cascaded multi-modulus algorithm for blind polarization de-multiplexing of high order QAM optical signals

J Ma, D Wang, C Guo - Asia Communications and Photonics …, 2013 - opg.optica.org
We propose a modified cascaded multi-modulus algorithm (M-CMMA) for blind polarization
de-multiplexing of high order QAM signals in coherent optical receivers. M-CMMA has a …

Parallel and pipelined CMA for high-speed and real-time optical coherent receivers

Y Dong, L Wang, Z Zhang, S Cai, L Li… - 2019 18th …, 2019 - ieeexplore.ieee.org
In order to reduce the logic resources required by parallel polarization demultiplexing
algorithm, an improvement scheme based on parallel structure of constant mode algorithm …

Analysis of performance for 100 Gbit/s dual-polarization QPSK modulation format system

L Li, G Xiao-bo, L Jing - Journal of Optical Communications, 2016 - degruyter.com
This article introduces modulation technology, coherent reception technology, the overall
design and other key issues for 100 Gbit/s dual-polarization quadrature phase shift keying …

Optimal polarization demultiplexing for coherent optical communications systems

I Roudas, A Vgenis, CS Petrou… - Journal of Lightwave …, 2010 - opg.optica.org
Spectrally-efficient optical communications systems employ polarization division
multiplexing (PDM) as a practical solution, in order to double the capacity of a fiber link …