OFDM RECEIVING CIRCUIT WITH MULTIPLE DEMODULATION PATHS USING OVERSAMPLING ANALOG-TO-DIGITAL CONVERTER

摘要

An OFDM receiving circuit with multiple demodulation paths using an oversampling ADC is provided to improve performance of an ADC by increasing an OSR(Oversampling Rate) without increasing a sampling frequency to improve performance of a receiving circuit. An OFDM receiving circuit with multiple demodulation paths using an oversampling ADC includes a low noise amplifier(31). The low noise amplifier receives an OFDM signal and amplifies the OFDM signal to output. A signal outputted from the low noise amplifier is applied to a down-conversion mixer(33). The down-conversion mixer down-converts the signal applied from the low noise amplifier and outputs the signal. A signal outputted from the down-conversion mixer is inputted into the plurality of demodulation paths. A combining unit(45) outputs after combining a plurality of data outputted from the demodulation paths. An oversampling ADC outputs after converting the OFDM signal outputted the down-conversion mixer to a digital signal.