2009•IEEE Journal of Selected Topics in Quantum ElectronicsRequires access

Phase-Noise-Tolerant Two-Stage Carrier Recovery Concept for Higher Order QAM Formats

Tilman Pfau, R. Noé

Abstract

In this paper, a phase-noise-tolerant two-stage carrier recovery concept for arbitrary quadrature amplitude modulation (QAM) constellations is presented. Possible implementations are evaluated in simulations of square 16-QAM, 64-QAM, and 256-QAM transmission systems, considering fourth-power and decision-directed carrier recovery for the first stage. The second stage uses QAM feedforward carrier recovery. It is shown that the two-stage concept achieves the same phase noise tolerance as the original QAM feedforward carrier recovery concept, but reduces the required hardware effort by factors of 1.5-3 depending on the order of the QAM constellation.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 61 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Quadrature amplitude modulation, QAM, Carrier recovery, Computer science, Phase noise, Electronic engineering, Noise (video), Transmission (telecommunications)