Cooperative and noncooperative spectrum sensing techniques using Welch's periodogram in cognitive radios

Radio spectrum deployment is growing considerably. With this respect finding unutilized frequency channels for new applications has become much more challenging. The problem can be solved by letting unlicensed systems to dynamically use unexploited licensed bands. This kind of flexible spectrum usag...

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Bibliographic Details
Published in2008 First International Workshop on Cognitive Radio and Advanced Spectrum Management pp. 1 - 5
Main Authors Sarvanko, H., Mustonen, M., Hekkala, A., Mammela, A., Matinmikko, M., Katz, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.02.2008
Subjects
Cognitive radio
FCC
Fluctuations
Power control
Radio frequency
Radiofrequency identification
Radiofrequency interference
Resource management
Spatial databases
Ultra wideband technology
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Summary:Radio spectrum deployment is growing considerably. With this respect finding unutilized frequency channels for new applications has become much more challenging. The problem can be solved by letting unlicensed systems to dynamically use unexploited licensed bands. This kind of flexible spectrum usage requires telecommunication systems to be equipped by an ability to specify unoccupied parts of radio spectrum. One method to identify temporarily unused parts of radio spectrum is spectrum sensing. In this paper, we focus on spectrum sensing using Welch's periodogram. In particular, we generalize and apply the theoretical analysis of the energy detection to the Welch's periodogram. Furthermore, we extend our study to cooperative spectrum sensing. The results indicate that the cooperation between two radios provides the highest cooperation gain.
ISBN:142442139X
9781424421398
DOI:10.1109/COGART.2008.4509987