Paper Info
Title
Spectrum Sharing Method for Cognitive Radio in TV White Spaces: Enhancing Spectrum Sensing and Geolocation Database.
Abstract
This paper proposes a system called Wireless Link based on Global Communication Channel (WLGCC) to enhance the spectrum sharing between digital broadcasting (DB) services and the cognitive radio (CR) system in the licensed band of 470-790 MHz. The WLGCC aims to enhance the spectrum sensing and geolocation database (GLD) spectrum sharing methods in the CR system. Spectrum sensing can be enhanced by receiving the status of the used frequencies from the WLGCC, thereby eliminating the need for a low detection threshold (i.e., avoiding the hidden node problem). In addition, the GLD can be enhanced by providing a reliable communication link between the database and the CR device in the form of an unused TV white space that is reserved as the proposed Global Communication Channel (GCC). This paper analyzes the coexistence of the new WLGCC system and the DB service in terms of avoiding additional interference. Specifically, we mathematically determine the WLGCC parameters, such as the in-band and out-of-band power levels, and operation coverage, and verify them using Monte Carlo simulation. The results show that WLGCC does not degrade the existing DB service and reliably transmits information of the vacant (or used) frequency bands to the CR.
Year
DOI
Venue
2012
10.3837/tiis.2012.08.001
KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS
Keywords
DocType
Volume
WLGCC,TV white space,spectrum sensing,geolocation database,spectrum sharing,in-band power,out-of-band power,separation distance
Journal
6
Issue
ISSN
Citations 
8
1976-7277
1
PageRank 
References 
Authors
0.35
0
5
Name
Order
Citations
PageRank
Walid A. Hassan1143.97
Han-Shin Jo2120575.15
Maziar Nekovee333033.93
Chee Yen Leow416318.21
Tharek Abd Rahman5224.95