![](/images/graphics-bg.png)
Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels
Joint Authors
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-24
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The IEEE 802.11ac wireless local area network (WLAN) standard has adopted beamforming (BF) schemes to improve spectral efficiency and throughput with multiple antennas.
To design the transmit beam, a channel sounding process to feedback channel state information (CSI) is required.
Due to sounding overhead, throughput increases with the amount of transmit data under static channels.
Under practical channel conditions with mobility, however, the mismatch between the transmit beam and the channel at transmission time causes performance loss when transmission duration after channel sounding is too long.
When the fading rate, payload size, and operating signal-to-noise ratio are given, the optimal transmission duration (i.e., packet length) can be determined to maximize throughput.
The relationship between packet length and throughput is also investigated for single-user and multiuser BF modes.
American Psychological Association (APA)
Yu, Heejung& Kim, Taejoon. 2014. Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1051609
Modern Language Association (MLA)
Yu, Heejung& Kim, Taejoon. Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels. The Scientific World Journal No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-1051609
American Medical Association (AMA)
Yu, Heejung& Kim, Taejoon. Beamforming Transmission in IEEE 802.11ac under Time-Varying Channels. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1051609
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1051609