Patent ID: 6081548
Filing Date: 2000-06-27
Classification: H04B

Abstract:
A spread spectrum radio communication apparatus for receiving a radio signal whose spectrum has been spread to obtain information data from the received radio signal comprising:a frequency converting means for converting the received signal into a signal having a baseband bandwidth;despread spectrum means for despreading the signal having the baseband bandwidth by using a predetermined pseudo random noise code (PN code);a plurality of integration damp filters for integrating a level of the despread signal at predetermined timing for one symbol period;timing signal generating means for generating a timing signal, which supplies the predetermined timing to the integration damp filters;frequency selecting instruction means for supplying the timing signal generating means with a frequency selecting instruction in order to change the frequency of the timing signal;combining means for combining outputs of the integration damp filters; andlevel detecting means for obtaining the information data by comparing a level of the output of the combining means with a predetermined level.