Cooperative Uplink NOMA in D2D Communications

In this work, we propose and investigate a novel hybrid cellular and bidirectional device-to-device (D2D) transmission scheme that exploits cooperative non-orthogonal multiple access (termed as BD2D-CNOMA). In BD2D-CNOMA, two far users can transmit their messages to the base station (BS) via a relay...

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Bibliographic Details
Published in:IEEE communications letters 2022-11, Vol.26 (11), p.2567-2571
Main Authors: Chrysologou, Athanasios P., Chatzidiamantis, Nestor D., Karagiannidis, George K.
Format: Article
Language:English
Subjects:
Bidirectional device-to-device (D2D)
Data transmission
Decoding
Device-to-device communication
Ergodic processes
ergodic rate
Interference cancellation
Mathematical analysis
Messages
NOMA
non orthogonal multiple access (NOMA)
Nonorthogonal multiple access
outage probability
Relays
Signal to noise ratio
successive interference cancellation (SIC)
Uplink
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Summary:In this work, we propose and investigate a novel hybrid cellular and bidirectional device-to-device (D2D) transmission scheme that exploits cooperative non-orthogonal multiple access (termed as BD2D-CNOMA). In BD2D-CNOMA, two far users can transmit their messages to the base station (BS) via a relaying node, while simultaneously they exchange D2D messages. Analytical expressions for the ergodic capacity, ergodic sum capacity (ESC) and outage probability of all data streams are derived under both perfect and imperfect successive interference cancellation (SIC). Furthermore, it is proved that ESC under perfect SIC scales as \frac {2}{3}\log _{2}\rho as transmit signal-to-noise ratio \rho increases. Simulation results validate the accuracy of the presented analysis, illustrate the superiority of BD2D-CNOMA over conventional benchmarks under perfect SIC and provide useful insights for the case of imperfect SIC.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2022.3199083