A Generalized STAR-RIS-Empowered Ambient Backscatter Short-Packet Communication Systems With Partial NOMA | IEEE Journals & Magazine | IEEE Xplore

A Generalized STAR-RIS-Empowered Ambient Backscatter Short-Packet Communication Systems With Partial NOMA


Abstract:

This letter proposes a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-empowered ambient backscatter short-packet paradigm with p...Show More

Abstract:

This letter proposes a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-empowered ambient backscatter short-packet paradigm with partial non-orthogonal multiple access (p-NOMA). In this paradigm, a multi-antenna base station communicates with users using finite blocklength schemes to achieve low latency transmission while flexibly exploiting the spectrum utilization via p-NOMA. Considering Nakagami–m fading channels, discrete phase-shift alignment, and imperfect successive interference cancellation, we provide a generalized information-theoretic framework that characterizes passive, active, and hybrid STAR-RIS types, to measure the block-error rate (BLER) and goodput. To gain useful insights into system designs, an upper-bound BLER at high transmit power has been derived. Numerical results demonstrate the BLER superiority of p-NOMA over its orthogonal multiple access (OMA) and NOMA counterparts, as well as the respective twofold and fourfold enhancements in terms of goodput.
Published in: IEEE Communications Letters ( Volume: 28, Issue: 12, December 2024)
Page(s): 2744 - 2748
Date of Publication: 07 October 2024

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