Patent ID: 7453924
Filing Date: 2008-11-18
Classification: H04B

Abstract:
1. A diversity receiver used in a CDMA communication system comprising: a first antenna for receiving signals from a first base station of a plurality of base stations, the plurality of base stations also including a second base station which is different from the first base station; a second antenna for receiving signals from the second base stations station, wherein the signals received by the first and second antennas are both intermittent CDMA signals; a received field strength measuring unit for measuring a first received field strength indicating a field strength of the intermittent CDMA signal received at said first antenna and a second received field strength indicating a field strength of the intermittent CDMA signal received at said second antenna, wherein said intermittent CDMA signals are sent from any one of the base stations every designated slot cycle in standby mode; an information storage unit for storing the first received field strength and the second received field strength; a base station information acquiring unit for acquiring first base station information included in the intermittent CDMA signal received by the first antenna and second base station information included in the intermittent CDMA signal received by the second antenna and storing the first base station information and the second base station information in said information storage unit; and an antenna selection unit for selecting one of said first antenna and second antenna at a higher received field strength based on the first received field strength of the intermittent CDMA signal including the first base station information and the second received field strength of the intermittent CDMA signal including the second base station information which are stored in said information storage unit prior to start of a phone conversation when a transition is made from standby mode to the phone conversation, wherein said first base station information is included in the signal which is sent from the first base station and received at said first antenna, and wherein said second base station information is included in the signal which is sent from the second base station and received at said second antenna.