Detection of false modulated signals in wireless communications
There is provided a method for use in a wireless communication to avoid detection of a false modulated signal in a paged device. In one embodiment, a modulated signal is received by the paged device. Then, the modulated signal is identified by the paged device as a preliminary false modulated signal. Thereafter, the gain of at least one paged device amplifier and/or a matching threshold of the paged device is reduced by the paged device to decrease a sensitivity of the paged device to avoid detection of a future false modulated signal. In one embodiment, the wireless communication is a Bluetooth wireless communication and the paged device is a Bluetooth enabled device. An exemplary system for implementing one embodiment of the disclosed method is described.
1. A method for use in wireless communication to avoid detection of false modulated signals in a wireless communications device, said method comprising:
receiving a modulated signal by said wireless communications device;
identifying a preliminary false modulated signal in said wireless communications device;
reducing a gain of at least one amplifier in said wireless communications device to avoid detection of said false modulated signals.
2. The method of claim 1 wherein said wireless communication comprises a Bluetooth wireless communication, and wherein said wireless communications device comprises a Bluetooth enabled device.
3. The method of claim 1 wherein said identifying said preliminary false modulated signal further comprises:
transmitting a response signal by said wireless communications device in response to said preliminary false modulated signal;
failing to receive in said wireless communications device a frequency hop synchronization (FHS) packet in reply to said response signal.
4. The method of claim 1 wherein said modulated signal is an inquiry signal.
5. The method of claim 1 wherein said modulated signal is a page signal.
6. The method of claim 1 wherein said at least one amplifier is a low noise amplifier (LNA).
7. The method of claim 1 further comprising resetting said gain of said at least one amplifier after said wireless communications device receives a frequency hop synchronization (FHS) packet.
8. A system for use in wireless communication to avoid detection of false modulated signals in a wireless communications device, said system comprising:
a receiver configured to receive a modulated signal;
a processor coupled to said receiver, said processor being configured to identify said modulated signal as a preliminary false modulated signal and to reduce a gain of at least one amplifier in said receiver.
9. The system of claim 8 wherein said wireless communication comprises a Bluetooth wireless communication, and wherein said wireless communications device comprises a Bluetooth enabled device.
10. The system of claim 8 wherein said modulated signal is an inquiry signal.
11. The system of claim 8 wherein said modulated signal is a page signal.