Seamless Spectrum Handover Considering Differential Path-loss in Cognitive Radio Systems

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In cognitive radio systems, spectrum handover occurs when a secondary user changes frequency due to the appearance of a primary user. Spectrum handover may result in degraded system performance because of the different propagation loss of the different frequency. In this case, data transmission is disrupted and it is more difficult to provide seamless service. Here, we propose a seamless handover scheme based on the prediction of cell coverage. The proposed handover scheme can avoid service disruption and can reduce redundant handovers. The efficiency of the scheme is validated by simulation results.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2009-03
Language
English
Article Type
Article
Citation

IEEE COMMUNICATIONS LETTERS, v.13, no.3, pp.190 - 192

ISSN
1089-7798
DOI
10.1109/LCOMM.2009.081496
URI
http://hdl.handle.net/10203/18666
Appears in Collection
EE-Journal Papers(저널논문)
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