Patent ID: 8718207

Claim:
A method used for providing an adaptive receiving of an adaptive receiver in wireless communication, capable of detecting the presence or absence of an adjacent channel interference (ACI) before receiving a desired signal of communication packet to accordingly set the adaptive receiver configurations, comprising steps of: Step 1 : turning on a receiver to receive a radio frequency signal before a starting time of receiving the desired signal, and setting a switch control signal to let an output terminal of a mixer and an input terminal of a variable gain amplifier (VGA) be connected through a switch; Step 2 : measuring the signal power of a digital signal which is outputted by an adaptive analog-to-digital converter (ADC) by an automatic gain control (AGC) unit and producing a measured signal power, P ACI ; Step 3 : setting an adjacent channel interference (ACI) indicator to one if the measured signal power, P ACI , is larger than a power threshold, P TH , otherwise, setting the adjacent channel interference (ACI) indicator to zero; Step 4 : setting the switch control signal to let an output terminal of an adaptive analog filter and an input terminal of the variable gain amplifier (VGA) be connected before the starting time and setting the adaptive analog filter and the adaptive analog-to-digital converter (ADC) with options according to the adjacent channel interference (ACI) indicator; and Step 5 : starting the detecting and decoding of the desired signal at the starting time, wherein the adaptive analog filter is bypassed in Step 1 by setting the switch and the adjacent channel interference (ACI) indicator is determined in Step 3 according to the measured signal power by the automatic gain control (AGC) in Step 2 after bypassing the adaptive analog filter; in the step 4 , when the adjacent channel interference (ACI) indicator is set to one, a filter order of the adaptive analog filter is set to a positive integer, F High , a pass-band bandwidth (BW) of the adaptive analog filter is set to a positive number, B Narrow , a sampling rate of the adaptive analog-to-digital converter (ADC) is set to a positive number, R High , a number of adaptive analog-to-digital converter (ADC) output bits is set to a positive integer, N Big ; in the step 4 , when the adjacent channel interference (ACI) indicator is set to zero, the filter order is set to a positive integer, F Low , the pass-band bandwidth (BW) is set to a positive number, B Wide , the sampling rate is set to a positive number, R Low , the number of adaptive analog-to-digital converter (ADC) output bits is set to a positive integer, N Small , with the mathematical relationship: 1≦F Low ≦F High , 0<B Narrow ≦B Wide , 0≦R Low ≦R High and 1≦N Small ≦N Big .