Invited Speaker
Maltsev Alexander

Maltsev Alexander

Professor, Mobile Communications Department, University of Nizhny Novgorod (UNN), Russia
Speech Title: Method and algorithms for improving positioning accuracy for users with restricted signal bandwidth in 5G NR

Abstract: In 5G NR systems, users with restricted signal bandwidth may suffer from poor positioning and range performance. In this paper, we present a detailed performance analysis of the frequency hopping method, allowing users to cover significantly more bandwidth while having a relatively small signal bandwidth in a given time interval. The performance is investigated in a non-stationary frequency selective channel in the absence of phase continuity between hops using coherent or non-coherent joint full bandwidth signal processing algorithms. It was shown that the correct operation of the coherent algorithm requires the phase errors compensation between each pair of signal frequency hops. The proposed non-coherent signal processing algorithm does not require correction of the signal phases and demonstrates its advantages for high mobility users in comparison with the coherent algorithm.

Biography: Alexander Maltsev received the Doctor of Science degree, in Radiophysics, from the University of Nizhny Novgorod (UNN), Russia, in 1990. After that he held the position of a Full Professor (1990 to 1994) and from 1994 till present he is holding the position of Head of the Statistical Radiophysics and Mobile Communications department in the UNN. In April 2001 Prof. Maltsev joined Intel Corporation and created the Advance Development (AD) team in Intel Russia from his former PhD students. From April 2006 to June 2020 he was an Intel Principal Engineer managing AD team. In August 2020 he joined to LG Electronics as a consulting researcher.
Prof. Maltsev contributed to development of Wi-Fi (IEEE802.11n, 11ad), WiMAX (IEEE802.16e, 16m), WiGig and LTE standards, participated in FP6 MEMBRANE (Multi-Element Multihop Backhaul Reconfigurable Antenna Network) project (2006-2009), headed the Russian Evaluation Group in IMT-Advanced (4G) evaluation process in ITU (2010-2011), participated as a technical expert in joint EU-Japan research FP7 project MiWEBA (Millimeter-Wave Evolution for Backhaul and Access) in 2013-2016.
Prof. Maltsev is author of numerous papers in refereed journals and conferences proceedings and holds more than 150 US patents. His current research interests include optimal and adaptive statistical signal processing, channel modeling and positioning, hybrid beamforming algorithms and mmWave high-gain steerable antennas, modern MIMO-OFDM communication systems, including IEEE802.11ay, IEEE802.11be, IEEE802.11Sens and 5G NR.