Koninklijke Philips Corporation N.v.

Bin Dong

Dagnachew Birru

Kiran Srinivas Challapali

Detecting the presence of a television signal embedded in a received signal including the television signal and noise. Either first-order or second order cyclostationary property of the signals may be used for their detection. When the first-order cyclostationary property is used, the received signal is upsampled by a factor of N, a synchronous averaging of a set of M segments of the upsampled received signal is performed, an autocorrelation of the signal is performed; and the presence of peaks in the output of the autocorrelation function is detected. When the second order cyclostationary property of the signal is used, the received signal is delayed by a fixed delay (symbol time), the received signal is multiplied with the delayed version, and a tone (single frequency) in the output is detected.

Detection of the presence of television signals embedded in noise using cyclostationary toolbox

A method for detecting the presence of a television signal embedded in a received signal including the television signal and noise is disclosed. Either first-order or second order cyclostationary property of the signals may be used for their detection. When the first-order cyclostationary property is used, the following method is used, the method comprising the steps of upsampling the received signal by a factor of N, performing a synchronous averaging of a set of M segments of the upsampled received signal, performing an autocorrelation of the signal; and detecting the presence of peaks in the output of the autocorrelation function. When the second order cyclostationary property of the signal is used, the method comprising the steps of delaying the received signal by a fixed delay (symbol time), multiplying the received signal with the delayed version, looking for a tone (single frequency) in the output.

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Bin Dong