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Dataset for Iterative matrix decomposition aided block diagonalization for mm-Wave multiuser MIMO systems

Dataset for Iterative matrix decomposition aided block diagonalization for mm-Wave multiuser MIMO systems
Dataset for Iterative matrix decomposition aided block diagonalization for mm-Wave multiuser MIMO systems
Considering the dearth for spectrum in the congested microwave band, the next generation of cellular communication systems is envisaged to incorporate part of the millimeter wave (mm-wave) band. Hence recently, there has been a significant interest in beamforming aided mm-wave systems. We consider a downlink multiuser mm-wave system employing a large number of antennas combined with a fewer radio frequency (RF) chains both at the base station (BS) and at each of the user equipment (UE). The BS and each of the UE is assumed to have a hybrid beamforming architecture, where a set of analog phase shifters is followed by digital precoding/combining blocks. In this paper, 1) we propose an iterative matrix decomposition based hybrid beamforming (IMD-HBF) scheme for a singleuser scenario, which accurately approximates the unconstrained beamforming solution, 2) we show that the knowledge of the angle of departure (AoD) of the various channel paths is sufficient for the block diagonalization (BD) of the downlink mm-wave channel and hence for achieving interference free channels for each of the UEs, 3) we propose a novel subspace projection based AoD aided BD (SP-AoD-BD) that achieves significantly better performance than the conventional BD, while still only requiring the knowledge of the AoD of various channel paths, 4) we use IMD-HBF in order to employ SP-AoD-BD in the hybrid beamforming architecture and study its performance with respect to the unconstrained system. We demonstrate using simulation results that the proposed IMD-HBF gives the same spectral efficiency as that of the unconstrained system in the single user scenario. Furthermore, we study the achievable sum rate of the users, when employing SP-AoD-BD with the aid of IMD-HBF and show that the loss in the performance with respect to the unconstrained system as well as the existing schemes is negligible, provided that the number of users is not excessive. This dataset accompanies the publication: Rajashekar, Rakshith and Hanzo, Lajos (2016) Iterative matrix decomposition aided block diagonalization for mm-Wave multiuser MIMO systems. IEEE Transactions on Wireless Communications (doi:10.1109/TWC.2016.2628357).
University of Southampton
Mysore Rajashekar, Rakshith
d2fbbb04-57c5-4165-908f-600fc1fbdeab
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Mysore Rajashekar, Rakshith
d2fbbb04-57c5-4165-908f-600fc1fbdeab
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Mysore Rajashekar, Rakshith and Hanzo, Lajos (2017) Dataset for Iterative matrix decomposition aided block diagonalization for mm-Wave multiuser MIMO systems. University of Southampton doi:10.5258/SOTON/405410 [Dataset]

Record type: Dataset

Abstract

Considering the dearth for spectrum in the congested microwave band, the next generation of cellular communication systems is envisaged to incorporate part of the millimeter wave (mm-wave) band. Hence recently, there has been a significant interest in beamforming aided mm-wave systems. We consider a downlink multiuser mm-wave system employing a large number of antennas combined with a fewer radio frequency (RF) chains both at the base station (BS) and at each of the user equipment (UE). The BS and each of the UE is assumed to have a hybrid beamforming architecture, where a set of analog phase shifters is followed by digital precoding/combining blocks. In this paper, 1) we propose an iterative matrix decomposition based hybrid beamforming (IMD-HBF) scheme for a singleuser scenario, which accurately approximates the unconstrained beamforming solution, 2) we show that the knowledge of the angle of departure (AoD) of the various channel paths is sufficient for the block diagonalization (BD) of the downlink mm-wave channel and hence for achieving interference free channels for each of the UEs, 3) we propose a novel subspace projection based AoD aided BD (SP-AoD-BD) that achieves significantly better performance than the conventional BD, while still only requiring the knowledge of the AoD of various channel paths, 4) we use IMD-HBF in order to employ SP-AoD-BD in the hybrid beamforming architecture and study its performance with respect to the unconstrained system. We demonstrate using simulation results that the proposed IMD-HBF gives the same spectral efficiency as that of the unconstrained system in the single user scenario. Furthermore, we study the achievable sum rate of the users, when employing SP-AoD-BD with the aid of IMD-HBF and show that the loss in the performance with respect to the unconstrained system as well as the existing schemes is negligible, provided that the number of users is not excessive. This dataset accompanies the publication: Rajashekar, Rakshith and Hanzo, Lajos (2016) Iterative matrix decomposition aided block diagonalization for mm-Wave multiuser MIMO systems. IEEE Transactions on Wireless Communications (doi:10.1109/TWC.2016.2628357).

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More information

Published date: 2017
Organisations: Southampton Wireless Group
Projects:
Cooperative Classical and Quantum Communications Systems
Funded by: UNSPECIFIED (EP/L018659/1)
31 October 2014 to 30 October 2017
Cooperative backhaul aided next-generation digital subscriber loops
Funded by: UNSPECIFIED (EP/N004558/1)
13 October 2015 to 12 October 2018

Identifiers

Local EPrints ID: 405410
URI: http://eprints.soton.ac.uk/id/eprint/405410
PURE UUID: 26faf509-2c68-4695-85c1-953c91636344
ORCID for Rakshith Mysore Rajashekar: ORCID iD orcid.org/0000-0002-7688-7539
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 06 Feb 2017 12:04
Last modified: 05 Nov 2023 02:32

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Contributors

Creator: Rakshith Mysore Rajashekar ORCID iD
Creator: Lajos Hanzo ORCID iD

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