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QoE-Aware Beamforming Design for Massive MIMO Heterogeneous Networks
IUST, Iran; MTNi Co, Iran.
IUST, Iran.
Linköpings universitet, Institutionen för systemteknik, Kommunikationssystem. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-5954-434X
2018 (Engelska)Ingår i: IEEE Transactions on Vehicular Technology, ISSN 0018-9545, E-ISSN 1939-9359, Vol. 67, nr 9, s. 8315-8323Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

One of the main goals of the future wireless networks is improving the users quality of experience (QoE). In this paper, we consider the problem of the QoE-based resource allocation in the downlink of a massive multiple-input multiple-output heterogeneous network. The network consists of a macrocell with a number of small cells embedded in it. The small cells base stations (BSs) are equipped with a few antennas, while the macro BS is equipped with a massive number of antennas. We consider the two services Video and Web Browsing and design the beamforming vectors at the BSs. The objective is to maximize the aggregated mean opinion score (MOS) of the users under constraints on the BSs powers and the required quality of service of the users. We also consider extra constraints on the QoE of users to more strongly enforce the QoE in the beamforming design. To reduce the complexity of the optimization problem, we suggest suboptimal and computationally efficient solutions. Our results illustrate that increasing the number of antennas at the BSs and also increasing the number of small cells antennas in the network leads to a higher user satisfaction.

Ort, förlag, år, upplaga, sidor
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2018. Vol. 67, nr 9, s. 8315-8323
Nyckelord [en]
Quality of experience (QoE); Web browsing; massive multiple-input multiple-output (MaMIMO); heterogeneous networks (HetNets); power allocation; mean opinion score; quality of service (QoS); video service; 5G
Nationell ämneskategori
Kommunikationssystem
Identifikatorer
URN: urn:nbn:se:liu:diva-151953DOI: 10.1109/TVT.2018.2843355ISI: 000445397600035OAI: oai:DiVA.org:liu-151953DiVA, id: diva2:1256328
Tillgänglig från: 2018-10-16 Skapad: 2018-10-16 Senast uppdaterad: 2019-06-28

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