cooperative spectrum sensing for cognitive radios
TRANSCRIPT
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Cooperative Spectrum Sensing for Cognitive Radios
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26% highest efficiency for busiest band
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13.1% Efficiency in NYC
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$20 BILLION for 60 MHz
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Primary User
Secondary User 3
Secondary User 2
Secondary User 1
Common Receiver
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Energy Detection Matched Filter Detection Cyclostationary Detection Wavelet Detection Performance
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x[n] y[n]Compareto template
DecideH0orH1
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Intro to CSS Performance of CSS Cooperative Diversity CSS Relay Diversity CSS Multiuser Diversity CSS Censored Decision CSS Asynchronous CSS
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Primary User
Secondary User 3
Secondary User 2
Secondary User 1
Common Receiver
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λ1 λ2
AmbiguousH0 H1
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Primary User
Secondary User 3
Secondary User 2
Secondary User 1
Common Receiver
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