Patent ID: 8340219

Claim:
A receiving method for supporting a scalable bandwidth, the receiving method comprising the steps of: (a) filtering a received radio frequency (RF) signal; (b) oscillating a frequency according to a center frequency control signal to output a local oscillation frequency; (c) down-converting the filtered RF signal by using the local oscillation frequency; (d) scalable-filtering the down-converted signal while adjusting a bandwidth according to a bandwidth control signal; (e) controlling gain of the scalable-filtered signal; (f) converting the gain-controlled analog signal into a digital signal by using a sampling frequency matching with a corresponding bandwidth according to an analog-to-digital converter (ADC) control signal; and (g) demodulating the converted digital signal, outputting the center frequency control signal, the bandwidth control signal, and the ADC control signal according to control information received from an upper layer, wherein the step f) converts the gain-controlled analog signal into the digital signal by using the sampling frequency matching with a bandwidth of a corresponding cell frequency allocation (FA) or an adjacent cell FA according to the ADC control signal.