Capacity Region Bounds for the K user Dispersive Nonlinear Optical WDM Channel with Peak Power Constraints

10/18/2021
by   Viswanathan Ramachandran, et al.
0

It is known that fiber nonlinearities induce crosstalk in a wavelength division multiplexed (WDM) system, which limits the capacity of such systems especially at higher signal powers. Traditionally, the channel capacity of a single WDM user is analyzed under different assumptions for the transmitted signals of the other users. In this paper, we instead take a multi-user information theoretic view of an optical WDM channel impaired by cross-phase modulation and dispersion as an interference channel. We characterize, for the first time, an outer bound on the capacity region of simultaneously achievable rate pairs, assuming a general K-user perturbative channel model using genie-aided techniques. Furthermore, an achievable rate region is obtained by time-sharing between certain single-user strategies, and it is shown that the latter can achieve better rate tuples compared to treating nonlinear interference as noise.

READ FULL TEXT

Authors

page 1

page 2

page 3

page 4

05/31/2021

A Capacity Region Outer Bound for the Two-User Dispersive Nonlinear Fiber Optical Channel

We study a nonlinear fiber optical channel impaired by cross-phase modul...
05/24/2022

Capacity Bounds for Optical WDM Channels with Peak Power Constraints

We investigate optical WDM transmission from the standpoint of an inform...
12/13/2019

Two-User SIMO Interference Channel with TIN: Improper Signaling versus Time-Sharing

In the two-user Gaussian interference channel with Gaussian inputs and t...
08/05/2018

Improper Signaling versus Time-Sharing in the Two-User Gaussian Interference Channel with TIN

So-called improper complex signals have been shown to be beneficial in t...
03/07/2018

Single cell and multi-cell performance analysis of OFDM index modulation

This paper addresses the achievable rate of single cell and sum rate of ...
01/23/2020

A Signal-Space Distance Measure for Nondispersive Optical Fiber

The nondispersive per-sample channel model for the optical fiber channel...
01/13/2018

On the Capacity Region of the Deterministic Y-Channel with Common and Private Messages

In multi user Gaussian relay networks, it is desirable to transmit priva...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.