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Joint localization and communication in 5G millimeter wave networks

Abstract : In this thesis, we investigate different facets of localization and communication services motivated by the symbiosis between them in the millimeter wave (mm-Wave) context for the fifth generation (5G) of wireless communications. Our aim is twofold: first, show that this duality is mutually beneficial to both services, and second, aim towards a co-existence to capture these benefits in order to bring forth mm-Wave as a strong contender for 5G. First, we look into how beamforming, an integral part of mm-Wave communications, can aid in improving the localization performance. After characterizing the localization performance in terms of Cramer-Rao lower bound (CRLB), we show that with optimized beamforming, the estimation of localization variables (delay, angle of departure (AoD) and angle of arrival (AoA)) improves. Then we consider the problem of co-existence of the two services together in the same system while sharing time and frequency resources. We study the non-trivial trade-off between the performances of the two services during this resource budgeting. Then, relying on this trade-off, we design an optimal resource allocation scheme while also optimizing the beamwidth in order to ascertain high performance in terms of both localization and communication. In the same context, we also look into different applications of this improved location information namely initial access, channel estimation and simultaneous localization and communication (SLAM). We show that the related performances improve in terms of quality, latency and/or complexity in comparison to the conventional methods.
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Submitted on : Tuesday, November 10, 2020 - 3:01:08 PM
Last modification on : Thursday, January 7, 2021 - 4:18:29 PM
Long-term archiving on: : Friday, February 12, 2021 - 12:18:47 PM


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  • HAL Id : tel-02998404, version 1


Remun Koirala. Joint localization and communication in 5G millimeter wave networks. Networking and Internet Architecture [cs.NI]. Université Rennes 1; Università degli studi (Bologne, Italie), 2020. English. ⟨NNT : 2020REN1S005⟩. ⟨tel-02998404⟩



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