METHOD AND APPARATUS FOR SIGNAL SCANNING FOR MULTIMODE RECEIVER

摘要

In a signal processing method, an input signal is provided at an input to a receiver. A bandwidth of the receiver is controlled to a predetermined wideband setting. For band in a plurality of frequency bands, the input signal is processed at the receiver with a mixer, an amplifier, and a filter, to generate a first processed signal, and a power spectral density of the processed signal is generated over that frequency band, to provide a frequency domain signal for that frequency band. Based on the frequency domain signals corresponding to each frequency band in the plurality of frequency bands, a frequency domain representation of the processed signal is reconstructed over a reconstruction band having a bandwidth larger than the predetermined wideband setting. Based on the reconstructed frequency domain representation, a spectral component is identified corresponding to at least one cellular telephony access mode.

主权项

1. A method comprising:
providing an input signal at an input to a receiver; controlling a bandwidth of the receiver to a predetermined wideband setting; for each of a plurality of frequency bands:
at the receiver, processing the input signal with a mixer, an amplifier, and a filter, to generate a first processed signal, andgenerating a power spectral density of the first processed signal over said frequency band, to provide a frequency domain signal for said frequency band; reconstructing, based on the frequency domain signals corresponding to each frequency band in the plurality of frequency bands, a frequency domain representation of the processed signal over a reconstruction band having a bandwidth larger than the predetermined wideband setting; and identifying, based on the reconstructed frequency domain representation, a spectral component corresponding to at least one cellular telephony access mode.