Paper Info
Title
Selective beamforming for inter-cell interference mitigation in coordinated wireless LANs
Abstract
In future wireless LAN systems, the transmission bandwidth will become wider and the number of access points (APs) will increase as wireless LAN systems become more widespread. As a result, the number of available frequency channels will decrease and inter-cell interference (ICI) among APs with the same frequency channel will become a serious problem. To address this issue we previously proposed an ICI mitigation scheme based on coordinated APs, where a transmit beamforming scheme used for multiuser MIMO is applied to avoid the ICI effect. In this paper, we propose a selective beamforming scheme for ICI mitigation in wireless LAN systems. The scheme uses ICI power as a basis for selectively determining whether to perform null beamforming for each station (STA) in overlapping basic service sets (OBSSs) according to the ICI power. Computer simulation results confirm that the achievable rate obtained with the scheme improves and is higher than that obtained with either time resource sharing or conventional ICI mitigation in an OBSS environment.
Year
Venue
Keywords
2013
Wireless Personal Multimedia Communications
array signal processing,interference suppression,telecommunication channels,wireless LAN,ICI effect,ICI mitigation,MIMO,OBSS environment,access points,beamforming scheme,computer simulation,coordinated wireless LAN,frequency channel,inter-cell interference mitigation,overlapping basic service sets,selective beamforming,time resource sharing,transmission bandwidth,wireless LAN systems,OFDM,beamforming,downlink multiuser MIMO,inter-cell interference,wireless LAN
Field
DocType
ISSN
Beamforming,Wireless,Computer science,Computer network,MIMO,Communication channel,Local area network,Interference (wave propagation),Shared resource,Orthogonal frequency-division multiplexing
Conference
1347-6890
Citations 
PageRank 
References 
0
0.34
6
Authors
4
Name
Order
Citations
PageRank
Koichi Ishihara13910.89
Tomoki Murakami2167.19
Yusuke Asai35415.85
Masato Mizoguchi48014.45