Abstract:
A communication apparatus is provided. An RF module receives an RF signal. An analog down converter down converts the RF signal in response to a band select signal to generate a first converted signal in a specific frequency band. An analog-to-digital converter converts the first converted signal into a digital signal. A digital down converter down converts the digital signal in response to a channel select signal to generate a second converted signal. The channel select signal controls the digital down converter to sweep a plurality of scan trains during a scan frame. Each of the scan trains includes a plurality of channels. The total channel number of the plurality of scan trains is N. A detector determines whether the RF signal includes an ID packet according to the second converted signal corresponding to the channels of the plurality of scan trains.
Abstract:
A communication apparatus is provided. The communication apparatus includes an RF module for receiving an RF signal, and a down converter, coupled to the RF module, for down converting the RF signal in response to a channel select signal to generate a converted signal. The channel select signal controls the down converter to sweep a plurality of scan trains during a scan frame, and each of the scan trains comprises a plurality of channels, wherein a total channel number of the plurality of scan trains is N, where 32≦N≦78. The communication apparatus also includes a detector, coupled to the down converter, for determining whether the RF signal comprises an ID packet according to the converted signal corresponding to the channels of the plurality of scan trains.