Rate allocation in massive multiple access combining successive decoding with error control
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessOpen Access
The Gaussian multiple access channel under asymptotically many code-division-multiple-access users and successive interference cancellation (SIC) is investigated in this work. Users transmit n-symbol packets and select their encoding rate as a function of their perfectly known channel gains. We address a theoretical study whereby the performance of employed encoding schemes is described by achievable second-order coding rates at blocklength n. Our contribution is twofold. Firstly, we formulate and solve an optimal control problem to maximize the asymptotic user-aggregate spectral efficiency (SE) for a one-iteration SIC. Secondly, we analyze the user-limit behavior of two-iteration SIC and propose a complexity-affordable vector optimization to maximize the user-aggregate SE. Reported results quantify the benefit of adopting a two-iteration SIC versus the blocklength.
CitationMolina, F.; Sala, J. Rate allocation in massive multiple access combining successive decoding with error control. A: Asilomar Conference on Signals, Systems, and Computers. "Conference record of The Fifty-Fourth Asilomar Conference on Signals, Systems & Computers: November 1-5, 2020 Pacific Grove, California". Institute of Electrical and Electronics Engineers (IEEE), 2021, p. 1059-1063. ISBN 978-0-7381-3126-9. DOI 10.1109/IEEECONF51394.2020.9443290.
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- Doctorat en Teoria del Senyal i Comunicacions - Ponències/Comunicacions de congressos 
- Departament de Teoria del Senyal i Comunicacions - Ponències/Comunicacions de congressos [3.106]
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