Wireless signal processing method and wireless device

A wireless device receiving a wireless signal, comprising:

• an amplifier circuit that amplifies the wireless signal according to a base gain;
• a down-conversion circuit, coupled to the amplifier circuit, down-converting the wireless signal;
• and
• a baseband circuit, coupled to the amplifier circuit and the down-conversion circuit, comprising:
• a storage unit storing a set of program instructions;
• and
• a computing unit, coupled to the storage unit, executing the set of program instructions to perform the following operations:
• setting the base gain as a first gain value in a first operation period;
• performing a plurality of packet detection processes in the first operation period and counting a total number of false alarms;
• determining a second gain value according to the total number of false alarms;
• and
• setting the base gain as the second gain value in a second operation period that is later than the first operation period.

A wireless signal processing method applied in a wireless device, the method comprising:

• setting a base gain as a first gain value in a first operation period;
• amplifying a wireless signal according to the base gain before a packet detection process in the first operation period begins;
• down-converting the wireless signal to generate a baseband signal;
• performing the packet detection process on the baseband signal in the first operation period;
• and
• setting the base gain as a second gain value in a second operation period, wherein, the second gain value is not equal to the first gain value, the second operation period is later than the first operation period, and the base gain is utilized to amplify the wireless signal in the second operation period before another packet detection process in the second operation period begins.