Paper Info
Title
Addressing Hidden Terminals in WLANs with Zero Forcing Coordinated Beamforming
Abstract
We present here a new technique that can be used to address a well-known Hidden Terminal problem in Wireless Local Area Networks. Specifically, Zero Forcing Coordinated Beamforming can be applied, in a hidden terminal scenario, in order to null the signal of the interfering transmitter so that desired transmission can take place without collision at the receiver. Basically, a precoding range of a receiver is used as a determinant in order to take a nulling decisions based on the notion that a successful transmission depends on the interference free condition at the receiver. We demonstrate the feasibility of the approach in an USRP2/GNURadio test-bed prototype. Our scheme improves the SNR and Effective SNR from about 5 to 11 dB in a hidden terminal scenario and maintains collision free simultaneous transmissions.
Year
DOI
Venue
2014
10.1109/ISCIT.2014.7011910
ISCIT
Keywords
Field
DocType
array signal processing,interference (signal),precoding,radio transceivers,telecommunication terminals,wireless lan,usrp2-gnuradio test-bed prototype,wlan,collision free simultaneous transmissions,effective snr,hidden terminal problem,interference free condition,nulling decisions,precoding range,receiver,transmitter interference,wireless local area networks,zero forcing coordinated beamforming,hidden terminals,nulling,precoding vector,binary phase shift keying,antennas
Transmitter,Beamforming,Wireless,Computer science,Computer network,Interference (wave propagation),Zero-forcing precoding,Hidden node problem,Precoding,Phase-shift keying
Conference
Citations 
PageRank 
References 
2
0.42
10
Authors
4
Name
Order
Citations
PageRank
Shrestha, S.151.86
Gengfa Fang212824.24
Eryk Dutkiewicz3891122.78
Xiaojing Huang4578.95