Wi-Lan Inc.

Daniel Payer

Vajira Samarasooriya

Jung Yee

James Stuart Wight

A DTV pilot sensor generates DTV pilot tone detection decisions associated with monitored television band channels without knowledge or estimation of a noise level of the monitored channel.

Method and apparatus for television band pilot sensing

A DTV pilot tone is detected in a noisy environment by computing a power average of Fast Fourier Transform (FFT) output spectra of a received signal, finding a power peak in the averaged outputs, computing an adjustment parameter to center the power peak in a Discrete Fourier Transform bin of the averaged output spectra, applying the adjustment parameter to adjust the received signal, computing a coherent average of FFT output spectra of the adjusted signal, and, testing a power spectrum of the coherent average for the presence of the DTV pilot tone.

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Rockland, Canada

Daniel Payer