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2020
Abstract The local wireless environment has been the setting for the co-existence of licensed mobile communications operators and unlicensed WiFi Internet access providers. The IEEE802.11 family of standards, developed for WiFi services in the Institute of Electrical and Electronics Engineers (IEEE), has dominated standards-setting ...
Alison Harcourt +2 more
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Abstract The local wireless environment has been the setting for the co-existence of licensed mobile communications operators and unlicensed WiFi Internet access providers. The IEEE802.11 family of standards, developed for WiFi services in the Institute of Electrical and Electronics Engineers (IEEE), has dominated standards-setting ...
Alison Harcourt +2 more
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Channel Smoothing for 802.11ax Beamformed MIMO-OFDM
IEEE Communications Letters, 2021Channel smoothing is a powerful technique that improves the channel estimation of orthogonal frequency division multiplexing (OFDM) systems by exploiting the correlation or smoothness among the frequency-domain channel responses. However, it can’t be applied to WiFi beamformed MIMO systems because the beamforming vectors provided by the beamforming ...
Feng Jiang, Qinghua Li, Xiaogang Chen
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Scheduling and Resource Allocation in 802.11ax
IEEE INFOCOM 2018 - IEEE Conference on Computer Communications, 2018802.11ax introduces OFDMA to WiFi. It thus enables multiplexing users/user groups in the frequency domain. WiFi networks usually operate in a multipath environment which generates a frequency selective channel. Hence, the capacity of a user/user group changes over different subcarriers.
Kaidong Wang, Konstantinos Psounis
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Uplink Resource Allocation in IEEE 802.11ax
ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019One of the notable features of the upcoming Wireless Fidelity (Wi-Fi) standard—namely, IEEE 802.11ax—is the use of Multi-User Orthogonal Frequency Division Multiple Access (MU-OFDMA). MU-OFDMA facilitates multiple users to transmit simultaneously in smaller sub-channels (a.k.a.
Sudeep Bhattarai +2 more
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UL-MU Transmissions in IEEE 802.11ax Networks
2020 IEEE International Conference on Consumer Electronics (ICCE), 2020In IEEE 802.11ax networks, multiple uplink wireless-connectivity services are supported by an uplink multiuser multiple-input and multiple-output (MU-MIMO) technique. In this study, we propose a method for uplink multi-user (UL-MU) transmissions in IEEE 802.11ax networks. In the proposed method, stations are clustered on the basis of their transmission
Yonggang Kim +3 more
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An IEEE 802.11ax Interference-Aware MAC Queue
2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 2020The first wave of IEEE 802.11ax capable devices have already hit the market, aiming at enhancing the Quality of Experience (QoE) for the users in dense deployments, by enabling novel features to improve throughput and spectrum efficiency. One of these features is Spatial Reuse (SR) mechanism, which is introduced for coping with the exposed node problem.
Ioannis Selinis +3 more
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VoWiFi Cell Capacity Estimation using IEEE 802.11ax
2021 28th International Conference on Telecommunications (ICT), 2021The IEEE 802.11 standard is commonly used to provide wireless networking capabilities for different applications. Although the format was designed mainly to provide data transmission capability, it also became a common medium for speech communication. The reasons are twofold: extensive Wireless Local Area Network (WLAN) connectivity and the low cost of
Ayes Chinmay, Hemanta Kumar Pati
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