Digital coherent transceivers have revolutionized optical fiber communications due to their
superior performance offered compared to intensity modulation and direct detection based …

The recently reported high spectral efficiency (SE) and high-baud-rate signal transmission
are all based on digital coherent optical communications and digital signal processing …

To accommodate the demand of exponentially increased global wireless data traffic, the
prospective data rates for wireless communication in the market place will soon reach 100 …

Photonics-aided terahertz (THz) wireless systems have been progressively developed to
accommodate the forthcoming wireless communication with extremely high data rates in …

This study addresses the issues of optical network survivability to attacks in the optical
physical layer. The authors comprehensively review and discuss the vulnerability of optical …

In this paper, we model and analyze the end-to-end energy consumption of 100-Gbps
coherent long-haul transmission systems. In particular, we investigate the impact of forward …

A novel digital signal processing (DSP) scheme for quadrature duobinary (QDB) spectrum
shaped polarization multiplexed quadrature phase shift keying (PM-QPSK) based on multi …

A wide-range frequency offset estimation algorithm is proposed for optical coherent systems,
which removes the modulated phase information from the received signal accurately using …

We investigate carrier estimation (CE) for coherent optical receivers where the received
signal is impaired by additive white Gaussian noise, laser phase noise, and frequency offset …

We present a digital pilot aided carrier frequency offset estimation (FOE) method for
coherent optical transmission systems. Unlike the conventional pilot tone insertion scheme …