Performance Analysis of Indoor THz Communications with One-Bit Precoding

Li, D., Qiao, D., Zhang, L. and Li, G. Y. (2019) Performance Analysis of Indoor THz Communications with One-Bit Precoding. In: IEEE GLOBECOM 2018, Abu Dhabi, United Arab Emirates, 09-13 Dec 2018, ISBN 9781538647271 (doi: 10.1109/GLOCOM.2018.8648135)

165555.pdf - Accepted Version



In this paper, the performance of indoor Terahertz (THz) communication systems with one-bit digital-to- analog converters (DACs) is investigated. Array-of- subarrays architecture is assumed for the antennas at the access points, where each RF chain uniquely activates a disjoint subset of antennas, each of which is connected to an exclusive phase shifter. Hybrid precoding, including maximum ratio transmission (MRT) and zero-forcing (ZF) precoding, is considered. The best beamsteering direction for the phase shifter in the large subarray antenna regime is first proved to be the direction of the line-of-sight (LoS) path. Subsequently, the closed-form expression of the lower- bound of the achievable rate in the large subarray antenna regime is derived, which is the same for both MRT and ZF and is independent of the transmit power. Numerical results validating the analysis are provided as well.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Zhang, Professor Lei
Authors: Li, D., Qiao, D., Zhang, L., and Li, G. Y.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Published Online:21 February 2019
Copyright Holders:Copyright © 2018 IEEE
First Published:First published in IEEE GLOBECOM 2018
Publisher Policy:Reproduced in accordance with the publisher copyright policy
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