Background
Type: Conference Paper

A New Probabilistic Constellation Shaping Scheme for APSK Modulation

Journal: ()Year: 19 May 2021Volume: Issue:
Poor S.Z.Forouzan A.aParvaresh F.a
a :University of Isfahan - IRAN(IR) - Isfahan
DOI:10.1109/IWCIT53998.2021.9519623Language: English

Abstract

Probabilistic constellation shaping (PCS) has attracted a lot of attention for increasing the spectral efficiency (SE) in coherent fiber optic communication. Unfortunately, increasing the transmit power could increase non-linear self- and cross-phase modulations due to the Kerr effect in fiber optic. Owing to smaller peak-to-average power ratio (PAPR), higher angular distance between constellation points, and lower amplitude levels, amplitude and phase shift keying (APSK) can be more robust to phase noise than quadrature amplitude modulation (QAM). A new PCS scheme is proposed for the standard APSK 16 and 64 DVB-S2/S2X modulation formats. Simulation results in additive white gaussian noise (AWGN) channels show a close bit error rate performance for the proposed system compared to probabilistically-shaped QAM. © 2021 IEEE.

Author Keywords

APSK modulationCoherent fiber optic communicationDistribution matcherProbabilistic constellation shaping

Other Keywords

Bit error rateFiber opticsGaussian noise (electronic)Optical systemsPhase shift keyingTurbo codesWhite noiseAdditive white Gaussian noise channelAmplitudeand-phase shift keying (APSK)Bit error rate (BER) performanceCross phase modulationFiber optic communicationsPeak to average power ratioQuadrature-amplitude modulations (QAM)Spectral efficienciesQuadrature amplitude modulation