Energy-efficient routing, modulation and spectrum allocation in elastic optical networks

Y Tan, R Gu, Y Ji - Optical Fiber Technology, 2017 - Elsevier
With tremendous growth in bandwidth demand, energy consumption problem in elastic
optical networks (EONs) becomes a hot topic with wide concern. The sliceable bandwidth …

Multi-channel phase regeneration of QPSK signals based on phase sensitive amplification

H Wang, T Luo, Y Ji - Frontiers of Optoelectronics, 2019 - Springer
In this paper, we propose and demonstrate simultaneous phase regeneration of four
different channels of QPSK signal based on phase sensitive amplification. The configuration …

Energy-efficient dynamic lightpath adjustment in a decomposed AWGR-based passive WDM fronthaul

H Yu, J Zhang, Y Ji, M Tornatore - Journal of Optical Communications …, 2018 - opg.optica.org
To cope with the explosion of mobile traffic demand, cloud radio access networks (C-RAN)
have been recently proposed. In C-RANs, the two main elements of traditional base stations …

Resource allocation optimization for time and wavelength division multiplexing passive optical network enabled mobile fronthaul with bitrate-variable compressed …

G Wang, R Gu, Y Ji - Journal of Optical Communications and …, 2016 - opg.optica.org
Recently, a cloud radio access network (C-RAN) has been proposed as a candidate
architecture for fifth-generation mobile communication. Fronthaul is a new segment in C …

Optical modulation format conversion from one QPSK to one BPSK with information-integrity-employing phase-sensitive amplifier

J Cui, H Wang, Y Ji - Applied Optics, 2017 - opg.optica.org
In this paper, a scheme for optical modulation format conversion from one 20 Gbps
quadrature phase-shift keying (QPSK) signal to one 20 Gbps binary phase-shift keying …

Implementation of network-coding approach for improving the BER performance in non-orthogonal multiple access (NOMA)-PON

N Feng, X Sun - Optics Communications, 2020 - Elsevier
In the current passive optical networks (PONs), we address the challenge of dealing with
asymmetric channel conditions and asymmetric data rates in order to meet the traffic …

Bandwidth reservation for tenants in reconfigurable optical OFDM datacenter networks

A Liu, Y Sun, Y Ji - IEEE Photonics Journal, 2018 - ieeexplore.ieee.org
The optical datacenter networks need periodical reconfiguration in response to traffic
change. Before the networks reconfigure, the tenant requests are given and should be …

Hybrid services efficient provisioning over the network coding–enabled elastic optical networks

X Wang, R Gu, Y Ji, M Kavehrad - Optical Engineering, 2017 - spiedigitallibrary.org
As a variety of services have emerged, hybrid services have become more common in real
optical networks. Although the elastic spectrum resource optimizations over the elastic …

Efficient resource allocation for passive optical fronthaul-based coordinated multipoint transmission

G Wang, R Gu, H Li, Y Ji - EURASIP Journal on Wireless Communications …, 2016 - Springer
The centralized processing in cloud radio access network enables cooperation between
baseband processing units (BBUs) like inter-cell interference (ICI) cancellation on the basis …

Analytical solution of amplitude ratio in optical phase quantization based on phase sensitive amplification

H Wang, T Liu, K Tong, Y Ji, L Bai - Journal of Lightwave …, 2018 - ieeexplore.ieee.org
A detailed derivation is presented for the analytical solution of the optimal amplitude ratio m
between the signal and its harmonic for M-level optical phase quantization of a signal with …