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Abstract

The regulatory framework for access to the TV white space (TVWS) spectrum has been progressing rapidly in the UK and licence exempt access through a geolocation database should soon be available. The characteristics of the white space devise (WSDs) that will exploit this spectrum are less well known, but a number of candidate technologies are emerging. The Βι¶ΉΤΌΕΔ has participated in two field trials in rural and suburban environments to evaluate the performance of three WSD candidate technologies. The range and throughput achieved for broadband applications in these UK trials is discussed. The selectivity and overload characteristics of TV receivers will play an important part in determining the power than can be safely radiated without disrupting TV reception. An extensive programme of laboratory measurements on TV receivers has been completed and reveals a considerable spread in performance. Some recent designs are proving particularly susceptible to TVWS interference and new performance targets are recommended to unlock the full potential of new TVWS services. This document was originally published at the IBC 2013 Conference.

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