Widely linear filtering for multiimpairment compensation in dispersion managed mqam modulated optical systems

R Yadav, LN Venkatasubramani, RD Koilpillai… - IEEE …, 2022 - ieeexplore.ieee.org
We propose a blind joint equalization algorithm for M-QAM signals based on a widely linear
filtering approach. The proposed scheme jointly compensates for receiver IQ imbalance …

Widely Linear Filtering for Multi-Impairment Compensation in Coherent Optical Systems

R Yadav, LN Venkatasubramani, RD Koilpillai… - Authorea …, 2023 - techrxiv.org
We propose a blind joint equalization algorithm for M-QAM signals based on a widely linear
filtering approach. The proposed scheme jointly compensates receiver IQ imbalance and …

Carrier Phase Recovery Scheme Tolerant to Transmitter IQ Imbalance with Adaptive Constellation Referencing

SA Mir, LN Venkatasubramani… - 2022 Workshop on …, 2022 - ieeexplore.ieee.org
We present a novel carrier phase recovery algorithm in the presence of transmitter IQ
imbalance using a joint equalizer by performing gradient descent adaptation for phase …

IQ Skew Tolerance Study of Modified Widely Linear Filter in 400 Gbps PM-16QAM System

LN Venktasubramani, R Yadav… - 2021 Photonics …, 2021 - ieeexplore.ieee.org
We study the effect of receiver IQ skew in the 448 Gbps PM-16QAM system employing a joint
equalizer for polarization demultiplexing, IQ gain and phase imbalance and carrier recovery …