Flexible spectrum sharing of two asynchronous phase-shift keying signals using power division multiplexing

Peicheng Liao*, Kaiheng Zou, Huibin Zhou, Ahmad Fallahpour, Nanzhe Hu, Yinwen Cao, Ahmed Almaiman, Fatemeh Alishahi, Changjing Bao, Moshe Tur, Alan E. Willner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We numerically and experimentally report flexible spectrum sharing of two asynchronous phase-shift keying (PSK) signals using power division multiplexing. We show that a hybrid quadrature-amplitude-modulated signal is generated when two PSK signals with different power levels are superposed. By using successive interference cancellation, a 20 Gbaud "strong" signal combined with a 9 or 4 Gbaud "weak" signal can be recovered sequentially with bit-error rate performance below the forward error correction threshold. In addition, we show the dependence of system performance on the power ratio between the strong and weak signals. These two signals can contain different baudrates, pulse shapes, and modulation formats.

Original languageEnglish
Pages (from-to)1176-1179
Number of pages4
JournalOptics Letters
Volume45
Issue number5
DOIs
StatePublished - 1 Mar 2020

Fingerprint

Dive into the research topics of 'Flexible spectrum sharing of two asynchronous phase-shift keying signals using power division multiplexing'. Together they form a unique fingerprint.

Cite this