Patent ID: 8086204

Claim:
A radio receiving apparatus comprising: a gain adjuster that adjusts gain of an analog part, a plurality of filters that filter a received signal; a signal power meter that measures signal power of the received signal, and comprises a received signal power meter that measures overall signal power of the received signal; and a filter selector that selects a filter to be adopted from the plurality of filters based on information obtained in the signal power meter, wherein the filter selector performs calculation that associates an output from the gain adjuster with an output from the received signal power meter, detects a noise level of the received signal by comparing the calculation result with a specific threshold, selects an intersymbol interference canceling filter that cancels adjacent interference from the plurality of filters and cancels intersymbol interference when the noise level is low, and does not select the intersymbol interference canceling filter and does not cancel the intersymbol interference when the noise level is high.