Method and device for detecting occupation by a signal of an...

Details Method and device for detecting occupation by a signal of an... Method and device for detecting occupation by a signal of an...

2006-08-31

2009-08-11

Le, Thanh C (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

C455S296000, C375S348000

Reexamination Certificate

active

07574184

ABSTRACT:
A method for detecting occupation of an adjacent channel by a signal with the aid of a complex-valued bandpass signal having an information channel component and/or an adjacent channel component. In accordance with the invention, a) a real-valued bandpass signal is derived in that the complex-valued bandpass signal is filtered and the real component is produced from the filtered signal, b) the real-valued bandpass signal is transposed into a first baseband signal, c) the first baseband signal is filtered so that spectral components influenced by the information channel component are suppressed, and d) the first filtered signal is evaluated and a binary occupation signal is generated to indicate the occupation of the adjacent channel as a function of the evaluated first filtered signal. The invention further discloses a corresponding device for detecting occupation, as well as a transmitting/receiving device and an integrated circuit having such a device.

REFERENCES:
patent: 6081559 (2000-06-01), Leclerc et al.
patent: 6473417 (2002-10-01), Herzog
patent: 2003/0053562 (2003-03-01), Busson et al.
patent: 2004/0014424 (2004-01-01), Kristensson et al.
patent: 2004/0213328 (2004-10-01), Mills et al.
patent: 2004/0266383 (2004-12-01), Mattellini et al.
patent: WO 01/93439 (2001-12-01), None
patent: WO 2004/098141 (2004-11-01), None

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