Improved upper bound on capacity of optical IM/DD channels using binary pulse amplitude modulation

Abstract

A new upper bound on the channel capacity of power- and bandwidth-constrained optical intensity channels corrupted by white Gaussian noise is derived when equiprobable binary pulse amplitude modulation is used. A new closed-form upper bound on the capacity is found through a sphere-packing argument, presenting a tighter performance at lower optical signal-to-noise ratio when compared with previously reported bounds. © 2008 The Institution of Engineering and Technology.

Antonio García-Zambrana

Professor of Telecommunications Engineering

Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, visible light communications, and FPGA/RFSoC-based real-time prototyping.

Beatriz del Castillo-Vázquez

Associate Professor of Telecommunications Engineering

Associate Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, optical channel modelling and system-level performance analysis.