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- W4386216355 abstract "The development of large-size applications and the increasing number of users on WLANs have increased the need for low latency and high-speed data rates. In the IEEE 802.11ac, many features are added to the PHY and MAC layers to improve network performance and increase the data rate; at the PHY layer, IEEE 802.11ac introduces Down-link Multi-User Multi-Input Multi-Output (DL-MU-MIMO), which enables the Access Point (AP) to simultaneously transmit to various receivers using multiple spatial streams (SS). However, MU-MIMO required beamforming and channel calibration, which increases overhead. Channel calibration might be performed either per transmission or periodically. This paper concentrates on the impact of beamforming and two (20 and 80 ms) periods of channel calibration on the performance of the system in terms of throughput. Four scenarios with (5, 15, 30, and 45) nodes are proposed to investigate the network performance with different (2 × 2 single-user-MIMO (SU-MIMO), 4 × 4 SU-MIMO, 4 × 4 MU-MIMO-80 ms, and 4 × 4 MU-MIMO-20 ms) spatial stream. The OMNet++ v5.5.1 Modeler is utilized to model and simulate these scenarios. The simulation results show the throughput of 4 × 4 SU-MIMO outperforms that of 4 × 4 MU-MIMO (20 and 80 ms) by 32% and 18% (for 5 node scenario) up to 83% and 52% (for 45 node scenario), respectively." @default.
- W4386216355 created "2023-08-29" @default.
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- W4386216355 date "2023-01-01" @default.
- W4386216355 modified "2023-09-30" @default.
- W4386216355 title "Throughput Performance Analysis of DL-MU-MIMO for the IEEE 802.11ac Wireless LAN" @default.
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- W4386216355 doi "https://doi.org/10.1007/978-981-99-3611-3_45" @default.
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