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Linewidth tolerance of digital coherent receiver using Viterbi & Viterbi RF carrier recovery for radio-over-fibre links
2009 Edition, June 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Transport and distribution of wireless signals over fibre, so called Radio-over-Fibre (RoF), is an important technology in order to realize converged fibre-optic and wireless networks [1]. Recently, we have proposed and experimentally demonstrated a...

Linewidth tolerance for THz communication systems using phase estimation algorithm
2016 Edition, October 1, 2016 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents the impact of signal linewidth on photonic THz wireless systems using phase estimation (PE) algorithms at the receiver. The penalty associated with signal linewidth, as well as the optical linewidth requirements for systems...

Laser Linewidth Tolerance for 16-QAM Coherent Optical Systems Using QPSK Partitioning
2010 Edition, Volume 22, May 1, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The laser linewidth tolerance for 16-ary quadrature amplitude modulation (16-QAM) coherent optical systems is investigated using a quaternary phase-shift-keying (QPSK) partition scheme. The different stages needed to partition the square-16-QAM into QPSK...

Laser linewidth tolerance of coherent optical 64QAM and 16PSK systems using decision-aided maximum likelihood phase estimation
2011 Edition, May 1, 2011 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The exact bit-error rate of 64-quadrature amplitude modulation (64QAM) is derived. By using decision-aided maximum likelihood phase estimation, it is found that 64QAM has almost the same laser linewidth tolerance as 16-phase-shift keying.

Resolution and linewidth tolerances in electron beam and optical projection lithography
1981 Edition, Volume 28, November 1, 1981 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In order to understand the practical limits of electron beam direct-write and optical projection lithography techniques in device fabrication with micrometer and submicrometer geometries, we have exercised two computer simulation programs to estimate resolution limits and linewidth...

Laser Linewidth Tolerance of Decision-Aided Maximum Likelihood Phase Estimation in Coherent Optical $M$ -ary PSK and QAM Systems
2009 Edition, Volume 21, August 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This letter extends the decision-aided (DA) maximum likelihood (ML) phase estimation in an M -ary phase-shift keying (PSK) system to quadrature amplitude modulation (QAM) signals. The block length effect is simulated for both M-ary PSK and QAM systems, and also investigated in M -ary PSK...

Laser Frequency Jitter Tolerance and Linewidth Requirement for = 64Gbaud DP-16QAM Coherent Systems
2019 Edition, March 1, 2019 - Optical Society (The) (OSA)

Equalization-enhanced phase noise-dominated optical carrier frequency jitter tolerance and linewidth requirement for = 64Gbaud DP-16QAM dispersion-unmanaged coherent systems have been investigated. The implication to future 100 Gbaud systems is delineated.

Model-Based Design for Software Defined Radio on an FPGA
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents an approach of model-based design for implementing a digital communication system on an FPGA for software defined radio (SDR). SDR is a popular prototyping platform for wireless communication systems due to its flexibility and utility. A...

A Tight Lower Bound on the Gaussian Q-function with a Simple Inversion Algorithm, and An Application to Coherent Optical Communications
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We derive a tight, single-term, purely exponential, lower bound on the Gaussian Q-function, along with a method to optimize its tightness and a fast iterative method for its inversion. To illustrate its application, we show that it enables the accurate, analytical estimation of the...

Experimental Analysis of Laser Phase Noise Tolerance of Uniform 256QAM and Probabilistically Shaped 1024QAM
2019 Edition, March 1, 2019 - Optical Society (The) (OSA)

We experimentally compare laser linewidth tolerance of US-256QAM and PS-1024QAM. US-256QAM has higher achievable information rate (AIR) with <5% pilot symbol and 40 kHz linewidth, while PS-1024QAM realizes higher AIR than US-256QAM with narrower linewidth.

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