Spectral-efficiency of multicarrier sparse-mapping non-orthogonal multiple-access systems: downlink
Spectral-efficiency of multicarrier sparse-mapping non-orthogonal multiple-access systems: downlink
In this paper, we propose a non-orthogonal multiple-access (NOMA) scheme, namely the multicarrier sparse-mapping NOMA (MC/SM-NOMA), for supporting downlink data transmission in the scenarios where user load might be very heavy. Our MC/SM-NOMA scheme allows information to one user to be conveyed by multiple subcarrier channels, and each subcarrier channel to be shared by multiple (two or more) users. We consider two subcarrier-allocation schemes and the subcarrier-by-subcarrier optimum power-allocation. The performance of the MC/SM-NOMA systems employing the proposed subcarrier-and power-allocation schemes is investigated in terms of spectral-efficiency based on simulations. Our studies demonstrate that the MC/SM-NOMA scheme is beneficial to high-flexibility implementation of NOMA for various purposes. Furthermore, allowing more users to share one subcarrier channel is capable of significantly increasing the achievable spectral-efficiency.
multicarrier, Multiple-access, non-orthogonal multiple-access, physical-layer security, power-allocation, spectral-efficiency, subcarrier-allocation
1-6
Mao, Yinyou
e6d8c11f-adcb-4a52-9555-a2c48f19fdb8
Liu, Xingcheng
517e1f15-fe1b-4771-b630-d277b82a8948
Yang, Lie Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
2 April 2018
Mao, Yinyou
e6d8c11f-adcb-4a52-9555-a2c48f19fdb8
Liu, Xingcheng
517e1f15-fe1b-4771-b630-d277b82a8948
Yang, Lie Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Mao, Yinyou, Liu, Xingcheng and Yang, Lie Liang
(2018)
Spectral-efficiency of multicarrier sparse-mapping non-orthogonal multiple-access systems: downlink.
In 2017 IEEE/CIC International Conference on Communications in China, ICCC 2017.
vol. 2018-January,
IEEE.
.
(doi:10.1109/ICCChina.2017.8330515).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this paper, we propose a non-orthogonal multiple-access (NOMA) scheme, namely the multicarrier sparse-mapping NOMA (MC/SM-NOMA), for supporting downlink data transmission in the scenarios where user load might be very heavy. Our MC/SM-NOMA scheme allows information to one user to be conveyed by multiple subcarrier channels, and each subcarrier channel to be shared by multiple (two or more) users. We consider two subcarrier-allocation schemes and the subcarrier-by-subcarrier optimum power-allocation. The performance of the MC/SM-NOMA systems employing the proposed subcarrier-and power-allocation schemes is investigated in terms of spectral-efficiency based on simulations. Our studies demonstrate that the MC/SM-NOMA scheme is beneficial to high-flexibility implementation of NOMA for various purposes. Furthermore, allowing more users to share one subcarrier channel is capable of significantly increasing the achievable spectral-efficiency.
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More information
e-pub ahead of print date: 22 October 2017
Published date: 2 April 2018
Venue - Dates:
2017 IEEE/CIC International Conference on Communications in China, , Qingdao, China, 2017-10-22 - 2017-10-24
Keywords:
multicarrier, Multiple-access, non-orthogonal multiple-access, physical-layer security, power-allocation, spectral-efficiency, subcarrier-allocation
Identifiers
Local EPrints ID: 423240
URI: http://eprints.soton.ac.uk/id/eprint/423240
PURE UUID: 8c33494c-0143-4f6b-b8f2-7fb705a8169b
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Date deposited: 19 Sep 2018 16:30
Last modified: 18 Mar 2024 02:49
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Contributors
Author:
Yinyou Mao
Author:
Xingcheng Liu
Author:
Lie Liang Yang
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