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On the discrete-input continuous-output memoryless channel capacity of layered ACO-OFDM

On the discrete-input continuous-output memoryless channel capacity of layered ACO-OFDM
On the discrete-input continuous-output memoryless channel capacity of layered ACO-OFDM

Layered Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (LACO-OFDM) has been proposed for optical communications and has attracted much attention, thanks to its flexibility in terms of power vs. spectral efficiency. In this article, we propose algorithms for optimizing the Discrete-input Continuous-output Memoryless Channel (DCMC) capacity of LACO-OFDM. Then, an algorithm is proposed for maximizing the capacity for twin-layer LACO-OFDM by optimizing the power sharing between the layers. This is followed by the conception of a more general algorithm applicable to LACO-OFDM having an arbitrary number of layers. Numerical results are provided for quantifying the capacity improvement attained by the proposed algorithm. Moreover, an adaptive scheme is proposed for adjusting the number of layers to be used for maximizing the capacity at different SNRs.

LACO-OFDM, adaptive, capacity, optimization, power sharing
0733-8724
4955-4968
Zhang, Xiaoyu
ea1ec5dd-5b9f-4ba9-b420-c05e771a5ae3
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Xiaoyu
ea1ec5dd-5b9f-4ba9-b420-c05e771a5ae3
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zhang, Xiaoyu, Chen, Sheng and Hanzo, Lajos (2020) On the discrete-input continuous-output memoryless channel capacity of layered ACO-OFDM. IEEE Journal of Lightwave Technology, 38 (18), 4955-4968, [9098085]. (doi:10.1109/JLT.2020.2996541).

Record type: Article

Abstract

Layered Asymmetrically Clipped Optical Orthogonal Frequency Division Multiplexing (LACO-OFDM) has been proposed for optical communications and has attracted much attention, thanks to its flexibility in terms of power vs. spectral efficiency. In this article, we propose algorithms for optimizing the Discrete-input Continuous-output Memoryless Channel (DCMC) capacity of LACO-OFDM. Then, an algorithm is proposed for maximizing the capacity for twin-layer LACO-OFDM by optimizing the power sharing between the layers. This is followed by the conception of a more general algorithm applicable to LACO-OFDM having an arbitrary number of layers. Numerical results are provided for quantifying the capacity improvement attained by the proposed algorithm. Moreover, an adaptive scheme is proposed for adjusting the number of layers to be used for maximizing the capacity at different SNRs.

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Accepted/In Press date: 13 May 2020
e-pub ahead of print date: 21 May 2020
Published date: 15 September 2020
Keywords: LACO-OFDM, adaptive, capacity, optimization, power sharing

Identifiers

Local EPrints ID: 441027
URI: http://eprints.soton.ac.uk/id/eprint/441027
ISSN: 0733-8724
PURE UUID: 122a240d-b5e2-425a-a125-2663b8cc4c53
ORCID for Xiaoyu Zhang: ORCID iD orcid.org/0000-0002-0793-889X
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 27 May 2020 16:55
Last modified: 16 Sep 2021 11:15

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Contributors

Author: Xiaoyu Zhang ORCID iD
Author: Sheng Chen
Author: Lajos Hanzo ORCID iD

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