Sparse space-time-frequency-domain spreading for large-scale non-orthogonal multiple access
Sparse space-time-frequency-domain spreading for large-scale non-orthogonal multiple access
A generalised spatial modulation-aided sparse space-time-frequency spreading (GSM/SSTFS) scheme is proposed for supporting large-scale access at a high normalized user-load in next-generation systems by simultaneously exploiting the transmit diversity in the spatial- and frequency-domain. Specifically, in the GSM/SSTFS system employing two transmit antennas (TAs), each user equipment (UE) spreads its signal over two symbol durations, two active TAs, and multiple subcarriers by a unique pre-assigned sparse code, in order to attain spreading in three dimensions (3D). Furthermore, with the aid of GSM, extra information bits are embedded in the TA indices. At the receiver, a joint message passing-aided (JMPA) detector is employed for attaining near-single-user bit error rate (BER) performance, which is also compared to that of conventional multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) systems.
Generalized spatial modulation, message passing, space-time spreading
1-6
Liu, Yusha
711a72e8-e8be-4be4-a79d-ea1413e7012a
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Liu, Yusha
711a72e8-e8be-4be4-a79d-ea1413e7012a
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Liu, Yusha, Yang, Lieliang and Hanzo, Lajos
(2020)
Sparse space-time-frequency-domain spreading for large-scale non-orthogonal multiple access.
IEEE Transactions on Vehicular Technology, 69 (10), , [9144439].
(doi:10.1109/TVT.2020.3010437).
Abstract
A generalised spatial modulation-aided sparse space-time-frequency spreading (GSM/SSTFS) scheme is proposed for supporting large-scale access at a high normalized user-load in next-generation systems by simultaneously exploiting the transmit diversity in the spatial- and frequency-domain. Specifically, in the GSM/SSTFS system employing two transmit antennas (TAs), each user equipment (UE) spreads its signal over two symbol durations, two active TAs, and multiple subcarriers by a unique pre-assigned sparse code, in order to attain spreading in three dimensions (3D). Furthermore, with the aid of GSM, extra information bits are embedded in the TA indices. At the receiver, a joint message passing-aided (JMPA) detector is employed for attaining near-single-user bit error rate (BER) performance, which is also compared to that of conventional multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) systems.
Text
gsm-sstfs-double-col
- Accepted Manuscript
More information
Accepted/In Press date: 16 July 2020
e-pub ahead of print date: 20 July 2020
Keywords:
Generalized spatial modulation, message passing, space-time spreading
Identifiers
Local EPrints ID: 442532
URI: http://eprints.soton.ac.uk/id/eprint/442532
ISSN: 0018-9545
PURE UUID: 6dd7c000-762f-486e-9c99-02448fa8c973
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Date deposited: 17 Jul 2020 16:31
Last modified: 15 Sep 2021 01:42
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Contributors
Author:
Yusha Liu
Author:
Lieliang Yang
Author:
Lajos Hanzo
University divisions
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