Radio reception apparatus and high speed equalization processing method therefor

摘要

The invention provides a radio reception apparatus by which a delay by initialization of an equalizer is minimized and an equalization process with a minimum preamble signal can be performed normally to assure a high transmission efficiency and suppress an increase of the power consumption. First and second RF sections convert the frequencies of reception data from first and second antennae. A comparison section compares reception sensitivities of outputs of the first and second RF sections to select the output having a higher reception sensitivity. First and second carrier detection sections detect a start of reception data based on an output signal of the comparison section and causes an equalization processing section to end its demodulation upon reception of a demodulation data end signal. A first OR circuit outputs a result of logical ORing of the outputs of the first and second carrier detection sections. A first AND circuit outputs the output of the first RF section while the output of the first carrier detection section is active. A second AND circuit outputs the output of the second RF section while the output of the second carrier detection section is active. A second OR circuit outputs a result of logical ORing of the outputs of the first and second AND circuits. The equalization processing section receives the reception data signal from the second OR circuit and performs equalization for the received reception data based on the output of the first OR circuit.