Short Range White Space Utilization in Broadcast Systems for Indoor Environments
2010 (English)In: IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), IEEE , 2010Conference paper (Refereed)
As Digital Television Broadcasting spreads over theworld, existing (and more) TV channels can be distributed in lessspectrum in the spectrum traditionally allocated to TVbroadcasting. This freed spectrum is also referred to as the "DigitalDividend" and its use has been debated around the world. Inaddition, there is also a debate about the potential use of the “whitespace” within the TV-bands. This is due to the sparse frequencyplanning with large interference margins, which is typical in widearea broadcasting. Various technical approaches using Opportunistic Spectrum Access(OSA) have been proposed for unlicensed “white space” access tothe TV bands. Most of previous studies have focused on spectrumsensing, i.e. detecting “free channels”, where secondary users,utilizing White Space Devices (WSD) could avoid causing harmfulinterference to the TV receivers. However, interference caused byWSD is not only limited to co-channel interference. In particular, inshort-range scenarios, the adjacent channel interference is anequally severe problem. Assessing the feasibility of WSDs in shortrangeindoor scenarios, taking more interference mechanisms intoaccount is the objective of this paper. An Indoor home scenariowith Cable, Rooftop antenna and Set-top antenna reception ofDVB-T, has been analyzed. The spectrum reuse opportunities forWSDs have been determined, using the number of channels whereit is possible to transmit without causing harmful interference toDVB-T receivers as performance measure. Simulation results showthat the number of available channels for indoor unlicensed whitespace transmission appears to be significant in most of the studiedscenarios.
Place, publisher, year, edition, pages
IEEE , 2010.
White space, Digital Television Broadcasting, White Space Devices, Opportunistic Spectrum Access
IdentifiersURN: urn:nbn:se:kth:diva-62724DOI: 10.1109/DYSPAN.2010.5457866ScopusID: 2-s2.0-77953228395OAI: oai:DiVA.org:kth-62724DiVA: diva2:480998
Symposium on New Frontiers in Dynamic Spectrum, 2010 IEEE
QC 201202022012-02-022012-01-202014-05-19Bibliographically approved