Patent ID: 6141392
Filing Date: 2000-10-31
Classification: H04B

Abstract:
A diversity receiver for a spread spectrum radio packet communication system, comprising:a plurality of diversity receive antennas;a reverse spread demodulation circuit;a receive antenna change-over circuit for selecting any one of said plurality of diversity receive antennas to connect it to said reverse spread demodulation circuit;said reverse spread demodulation circuit executing processing of correlation between a receive signal inputted thereto from said diversity receive antenna connected thereto by means of said receive antenna change-over circuit and a spread code thereof; anda change-over control circuit for controlling said receive antenna change-over circuit;said change-over control circuit carrying out control so as to attain selection between said plurality of diversity receive antennas while changing over said plurality of diversity receive antennas in order during a period of time for which any correlation peak is not detected during outputting of said reverse spread demodulation circuit and so as not to attain change-over between said plurality of diversity receive antennas when correlation peaks in a predetermined number or more are detected during outputting of said reverse spread demodulation circuit.