×

Receive antenna selection method and diversity receiver

  • US 6,141,392 A
  • Filed: 07/03/1997
  • Issued: 10/31/2000
  • Est. Priority Date: 07/10/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. 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; and

    a 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.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×