DocumentCode
1968162
Title
Improved MU-MIMO performance for future 802.11 systems using differential feedback
Author
Porat, R. ; Ojard, E. ; Jindal, Nakul ; Fischer, M. ; Erceg, V.
fYear
2013
fDate
10-15 Feb. 2013
Firstpage
1
Lastpage
5
Abstract
Multiuser MIMO (MU-MIMO) is a new technology adopted in IEEE 802.11ac for enhancing downlink throughput. 802.11ac has an explicit feedback mechanism that enables very high quality channel feedback to be provided to the transmitter, but the overhead can be quite substantial. We propose a differential feedback method that significantly reduces this overhead by using a simple lossless, variable-length compression technique that exploits the slowly time varying wireless channel.
Keywords
MIMO communication; feedback; multiuser channels; radio transmitters; telecommunication standards; wireless LAN; wireless channels; 802.11 systems; IEEE 802.11ac; MU-MIMO performance; channel feedback; differential feedback; downlink throughput; multiuser MIMO performance; overhead reduction; simple lossless technique; time varying wireless channel; transmitter; variable-length compression technique; Aging; Antennas; Channel estimation; Correlation; Downlink; Quantization (signal); Throughput;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory and Applications Workshop (ITA), 2013
Conference_Location
San Diego, CA
Print_ISBN
978-1-4673-4648-1
Type
conf
DOI
10.1109/ITA.2013.6502944
Filename
6502944
Link To Document