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Gaussian multiple access channels with one-bit quantizer at the receiver

Rassouli, B and Varasteh, M and Gündüz, D (2018) 'Gaussian multiple access channels with one-bit quantizer at the receiver.' Entropy, 20 (9). p. 686. ISSN 1099-4300

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Abstract

The capacity region of a two-transmitter Gaussian multiple access channel (MAC) under average input power constraints is studied, when the receiver employs a zero-threshold one-bit analogue-to-digital converter (ADC). It is proven that the input distributions of the two transmitters that achieve the boundary points of the capacity region are discrete. Based on the position of a boundary point, upper bounds on the number of the mass points of the corresponding distributions are derived. Furthermore, a lower bound on the sum capacity is proposed that can be achieved by time division with power control. Finally, inspired by the numerical results, the proposed lower bound is conjectured to be tight.

Item Type: Article
Additional Information: 25 pages, 3 figures, revised version submitted to IEEE Transactions on Information Theory
Uncontrolled Keywords: Gaussian multiple access channel; one-bit quantizer; capacity region
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 09 Nov 2018 13:57
Last Modified: 15 Jan 2022 01:24
URI: http://repository.essex.ac.uk/id/eprint/23442

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