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Low-complexity and full-diversity parallel interference cancellation for multiuser wireless relaying networks


El Astal, MT and Ismail, A and Alouini, MS and Olivier, JC, Low-complexity and full-diversity parallel interference cancellation for multiuser wireless relaying networks, Transactions on Emerging Telecommunications Technologies, 30, (5) Article e3580. ISSN 2161-5748 (2019) [Refereed Article]

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DOI: doi:10.1002/ett.3580


In this paper, the multiuser interference of wireless relaying networks (WRNs) is considered. Two transmission protocols with an interference cancellation scheme are proposed, namely, the concurrent(S - R-D)-PICR,D protocol for decode-and-forward WRNs and the concurrent(S - R - D)-PICD protocol for amplify-and-forward WRNs. Unlike the existing protocols, these protocols allow the concurrent transmission in both phases of the transmission, and hence, higher spectral efficiency is offered while maintaining low decoding complexity. The concurrent(S - R - D)-PICR,D protocol achieves interference-free diversity without imposing any condition on the node's antenna number. However and similar to most existing protocols, this protocol requires the channel state information (CSI) of the users-relay links at the relay. In contrast, the concurrent(S - R - D)-PICD protocol achieves a better diversity order, given that the relay's antenna >8, whereas CSI is required only at the destination. Although the diversity's upper bound is not achieved, this protocol uses a simple relay as no CSI or encoding is required at the relay. In addition and unlike the existing protocols, the achievable diversity is determined by both the user's and the destination's antennas, and it is not sacrificed while the number of users is increased. This paper also establishes sufficient conditions for a space-time block code to achieve the mentioned diversity gain of the proposed protocols.

Item Details

Item Type:Refereed Article
Keywords:nonorthogonal multiple-access, time block-codes, cooperative diversity, protocols, designs
Research Division:Engineering
Research Group:Communications engineering
Research Field:Antennas and propagation
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Olivier, JC (Professor JC Olivier)
ID Code:151458
Year Published:2019
Deposited By:Engineering
Deposited On:2022-07-29
Last Modified:2022-07-29

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