2020/10/28 by Alessio Fascista, Fascista, Alessio, Angelo Coluccia +5
Engineering · #Advanced Wireless Communication Technologies #FOS: Electrical engineering #Indoor and Outdoor Localization Technologies #Signal Processing (eess.SP) #Underwater Vehicles and Communication Systems #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2010.14825
openalex publication_date 2020/10/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
MmWave multiple-input single-output (MISO) systems using a single-antenna\nreceiver are regarded as promising solution for the near future, before the\nfull-fledged 5G MIMO will be widespread. However, for MISO systems\nsynchronization cannot be performed jointly with user localization unless\ntwo-way transmissions are used. In this paper we show that thanks to the use of\na reconfigurable intelligent surface (RIS), joint localization and\nsynchronization is possible with only downlink MISO transmissions. The direct\nmaximum likelihood (ML) estimator for the position and clock offset is derived.\nTo obtain a good initialization for the ML optimization, a decoupled, relaxed\nestimator of position and delays is also devised, which does not require\nknowledge of the clock offset. Results show that the proposed approach attains\nthe Cram 'er-Rao lower bound even for moderate values of the system parameters.\n