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Performance Analysis of NOMA Multicast Systems Based on Rateless Codes with Delay Constraints

Hu, Y; Liu, R; Kaushik, A; Thompson, J; (2021) Performance Analysis of NOMA Multicast Systems Based on Rateless Codes with Delay Constraints. IEEE Transactions on Wireless Communications 10.1109/twc.2021.3064524. (In press). Green open access

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Abstract

To achieve an efficient and reliable data transmission in time-varying conditions, a novel non-orthogonal multiple access (NOMA) transmission scheme based on rateless codes (NOMA-RC) is proposed in the multicast system in this paper. Using rateless codes at the packet level, the system can generate enough encoded data packets according to users’ requirements to cope with adverse environments. The performance of the NOMA-RC multicast system with delay constraints is analyzed over Rayleigh fading channels. The closed-form expressions for the frame error ratio and the average transmission time are derived for two cases which are a broadcast communication scenario (Scenario 1) and a relay communication scenario (Scenario 2). Under the condition that the quality of service for the edge user is satisfied, an optimization model of power allocation is established to maximize the sum rate. Simulation results show that Scenario 2 can provide better block error ratio performance and exhibit less transmission time than Scenario 1. When compared with orthogonal multiple access (OMA) with rateless codes system, the proposed system can save on the transmission time and improve the system throughput.

Type: Article
Title: Performance Analysis of NOMA Multicast Systems Based on Rateless Codes with Delay Constraints
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/twc.2021.3064524
Publisher version: https://doi.org/10.1109/twc.2021.3064524
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10124770
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