Expanded Multiband Super-Nyquist CAP Modulation for Highly Bandlimited Organic Visible Light Communications
Journal article, 2020

In this article, we experimentally demonstrate a novel expanded nonorthogonal multiband super-Nyquist carrier-less amplitude and phase (m-ESCAP) modulation for bandlimited organic visible light communication (VLC) systems. The proposed scheme has the same bandwidth requirement as the conventional m-CAP while breaking the orthogonality between subcarriers by purposely overlapping them. We compare m-ESCAP with the conventional m-CAP and a compressed nonorthogonal version of m-CAP (m-SCAP) in terms of measured bit error rate (BER) performance, bit rates, and spectral efficiencies. We show that the m-ESCAP system offers improvement in the bit rate of $\sim$10% and 20% compared to the m-CAP and m-SCAP, respectively, and in the spectral efficiency of $\sim$20% compared to m-CAP. These gains are achieved at the cost of increased BER, which, however, remains below the 7% forward error correction limit.

visible light communications (VLC)

nonorthogonal

Phase modulation

OFDM

Bandwidth

multiband carrier-less amplitude and phase (CAP) modulation

Bit error rate

organic light emitting diode (LED)

Visible light communication

Chemistry

Digital signal processing

Author

Petr Chvojka

Czech Technical University in Prague

Zabih Ghassemlooy

Northumbria University

F. Cacialli

University College London (UCL)

I.Z. Darwazeh

University College London (UCL)

Stanislav Zvanovec

Czech Technical University in Prague

Paul Anthony Haigh

University College London (UCL)

A. Minotto

University College London (UCL)

Andrew Burton

Northumbria University

Petri Henrik Murto

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Ergang Wang Group

Zewdneh Genene

Addis Ababa University

W. Mammo

Addis Ababa University

Mats Andersson

Flinders University

Ergang Wang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Ergang Wang Group

IEEE Systems Journal

1932-8184 (ISSN)

Vol. 14 2 2544-2550 8844985

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/JSYST.2019.2939026

More information

Latest update

12/9/2020