On the Capacity of Wi-Fi System in TV White Space with Aggregate Interference Constraint
2013 (English)In: Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013, IEEE conference proceedings, 2013, 123-128 p.Conference paper (Refereed)
In this paper, we present a quantitative assessmentof the performance of a Wi-Fi like system in TV white space andcompare it with the traditional Wi-Fi system in the ISM band.Particular emphasis is given to the constraint on the aggregatesecondary interference on TV reception, which is regarded as thepremise of the link throughput analysis that followed. Numericalevaluation is performed over different scenarios where the TVreceive signal strength, number of unoccupied TV channels, userdensity are varied. Our results show that the primary interferenceconstraint has only significant impact on the secondary systemperformance in rural scenario with low TV receive signalstrength. In other cases, where higher transmit power does notguarantee better performance, the capacity of the system islimited by the secondary self-interference or collisions rather thanthe interference constraint. Therefore, efficient TV White Spaceutilization can be achieved by properly setting the secondarytransmit power adaptive to different environments.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. 123-128 p.
adjacent channel interference, aggregate interference, geo-location database, secondary spectrum reuse, TV White Space
IdentifiersURN: urn:nbn:se:kth:diva-138291DOI: 10.1109/CROWNCom.2013.6636805ScopusID: 2-s2.0-84890831659ISBN: 978-147992120-1OAI: oai:DiVA.org:kth-138291DiVA: diva2:680724
2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013; Washington, DC; United States; 8 July 2013 through 10 July 2013
QC 201401072013-12-182013-12-182014-06-09Bibliographically approved