Multiple access design for ultra-dense VLC networks: Orthogonal v.s. non-orthogonal
Multiple access design for ultra-dense VLC networks: Orthogonal v.s. non-orthogonal
Small cell aided ultra-dense networks (UDN) constitute an efficient solution to the ever-increasing thirst for more data. Thanks to the vast untapped high-frequency spectrum of visible light, visible light communications (VLC) is a natural candidate for UDN. In this paper, layered asymmetrically clipped optical OFDM (LACO-OFDM) aided ultra-dense VLC (UD-VLC) is investigated in terms of its user-association, multiple access (MA) and resource allocation. To handle the severe inter-cell interference (ICI) amongst the densely-deployed access points (AP), we propose a novel overlapped clustering technique relying on a hybrid non-orthogonal MA (NOMA) and orthogonal MA (OMA) scheme for enhancing the performance, with the aid of our dynamic resource allocation conceived. Our simulations show that the proposed LACO-OFDM aided UD-VLC using our hybrid MA scheme is more robust against the ICI, at a price of modestly decreasing the sum-throughput.
Feng, Simeng
038a3c0d-9d57-4031-8d38-2203ea230e79
Zhang, Rong
e54ae375-3495-4e40-aff1-4b8635ee2ede
Xu, Wei
485adfb3-7e21-442e-ac12-b45268504ebd
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Feng, Simeng
038a3c0d-9d57-4031-8d38-2203ea230e79
Zhang, Rong
e54ae375-3495-4e40-aff1-4b8635ee2ede
Xu, Wei
485adfb3-7e21-442e-ac12-b45268504ebd
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Feng, Simeng, Zhang, Rong, Xu, Wei and Hanzo, Lajos
(2018)
Multiple access design for ultra-dense VLC networks: Orthogonal v.s. non-orthogonal.
IEEE Transactions on Communications.
(doi:10.1109/TCOMM.2018.2884482).
Abstract
Small cell aided ultra-dense networks (UDN) constitute an efficient solution to the ever-increasing thirst for more data. Thanks to the vast untapped high-frequency spectrum of visible light, visible light communications (VLC) is a natural candidate for UDN. In this paper, layered asymmetrically clipped optical OFDM (LACO-OFDM) aided ultra-dense VLC (UD-VLC) is investigated in terms of its user-association, multiple access (MA) and resource allocation. To handle the severe inter-cell interference (ICI) amongst the densely-deployed access points (AP), we propose a novel overlapped clustering technique relying on a hybrid non-orthogonal MA (NOMA) and orthogonal MA (OMA) scheme for enhancing the performance, with the aid of our dynamic resource allocation conceived. Our simulations show that the proposed LACO-OFDM aided UD-VLC using our hybrid MA scheme is more robust against the ICI, at a price of modestly decreasing the sum-throughput.
Text
NOMA_UDN
- Accepted Manuscript
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Accepted/In Press date: 24 November 2018
e-pub ahead of print date: 30 November 2018
Identifiers
Local EPrints ID: 426569
URI: http://eprints.soton.ac.uk/id/eprint/426569
ISSN: 0090-6778
PURE UUID: 0c723021-5f57-4d08-a125-ca9bb60e9bc8
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Date deposited: 30 Nov 2018 17:30
Last modified: 18 Mar 2024 05:13
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Author:
Simeng Feng
Author:
Rong Zhang
Author:
Wei Xu
Author:
Lajos Hanzo
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