Research Article
Multi-Group Coexistence in License-Exempt Networks without Information Exchange
@INPROCEEDINGS{10.1109/CROWNCOM.2007.4549858, author={Qiang Zhu and Wing Shing Wong}, title={Multi-Group Coexistence in License-Exempt Networks without Information Exchange}, proceedings={2nd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2008}, month={6}, keywords={coexistence; license-exempt; cognitive radio}, doi={10.1109/CROWNCOM.2007.4549858} }- Qiang Zhu
Wing Shing Wong
Year: 2008
Multi-Group Coexistence in License-Exempt Networks without Information Exchange
CROWNCOM
IEEE
DOI: 10.1109/CROWNCOM.2007.4549858
Abstract
This paper introduces an approach to deal with coexistence problems in multi-group license-exempt (LE) networks. When multiple wireless groups share the same frequency channel, they interfere with each other. However we proved that if all transmitters use an identical power detection threshold and transmission power, coexistence can be achieved in the sense that the receiver of an active transmitter located inside a certain protected region is guaranteed a minimum SIR. Information exchange between groups is not needed so that by simply observing the power regulation rules, any individual group can exploit the spectrum resource in a relatively fair and efficient way. The results can also be applied to solve multi-group coexistence problems in cognitive radio networks