Performance Analysis of NOMA Random Access

Performance Analysis of NOMA Random Access

This letter applies non-orthogonal multiple access to uplink random access systems, where the transmit power from each user equipment (UE) is received at the base station as one of L target (received) powers. More precisely, if a backlogged UE's channel gain is greater than a threshold, it ra...

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Veröffentlicht in:IEEE communications letters 2018-11, Vol.22 (11), p.2242-2245
Hauptverfasser: Seo, Jun-Bae, Jung, Bang Chul, Jin, Hu
Format: Artikel
Sprache:eng
Schlagworte:
Bistability
Channel estimation
Downlink
Fading channels
NOMA
Non-orthogonal multiple access
Nonorthogonal multiple access
Random access
Silicon carbide
Throughput
Uplink
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Beschreibung
Zusammenfassung:This letter applies non-orthogonal multiple access to uplink random access systems, where the transmit power from each user equipment (UE) is received at the base station as one of L target (received) powers. More precisely, if a backlogged UE's channel gain is greater than a threshold, it randomly aims at one of the target powers with channel inversion. Then, the BS decodes the received signals with successive interference cancellation. This letter investigates the performance of this system in terms of throughput, access delay, energy efficiency, and bistability.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2018.2866376