Mobile terminal for code division multiple access mobile communication system

Mobile terminal for code division multiple access mobile communication system

  • CN 1,878,387 B
  • Filed: 03/29/1999
  • Issued: 12/05/2012
  • Est. Priority Date: 05/13/1998
  • Status: Active Grant
First Claim
Patent Images

1. a portable terminal is used for CDMA mobile communication systems, wherein;

  • The base station transmits control signal via pilot channel;

    By the long period sign extended, and at second interval mapping first searching code and second searching code of a said time slot, said second interval of a wherein said time slot is that long code is sheltered between the sign field to this control signal in first interval of a time slot of said pilot channel;

    And said first interval is also expanded by short codeSaid portable terminal comprises;

    The reception signal transformation of the carrier frequency that will receive from antenna is the RF unit of baseband signal;

    Lock unit regularly comprise being used to receive the input of said baseband signal and being the matched filter that said baseband signal is calculated correlation through utilizing said first searching code, thereby it is synchronous to set up slot timing;

    Be used to detect the detecting unit of said second searching code;

    AndThe detecting unit that is used for detection of long,Wherein, the ratio of said first searching code and second searching code has the low value of ratio than said short code and said long period symbol.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×