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Smart antenna receiver using pilot signal in CDMA mobile communication system and signal receiving method therefor

  • US 6,353,643 B1
  • Filed: 08/31/1998
  • Issued: 03/05/2002
  • Est. Priority Date: 08/30/1997
  • Status: Expired due to Term
First Claim
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1. A smart antenna receiver using a pilot signal in a base station of a code division multiple access (CDMA) mobile communication system, comprising:

  • a plurality of multipliers for multiplying radio signals received respectively through a plurality of antennas by adaptive weights;

    a summer for generating an array output signal by summing outputs of said plurality of multipliers;

    a pseudo noise code generator for generating a pseudo noise code which is detected from said pilot signal and has been used in a transmitter;

    a first multiplier for generating a despread signal by multiplying said array output signal by said pseudo noise code;

    a data bandwidth filter for eliminating an interference component by filtering said despread signal;

    a limiter for adjusting an amplitude of the interference component eliminated despread signal;

    a second multiplier for generating a re-spread reference signal by multiplying said amplitude adjusted signal by said pseudo noise code;

    a subtracter for generating an error signal by calculating the difference between said reference signal and said array output signal; and

    an adaptive processor for generating an optimal adaptive weight using said error signal and said radio signals.

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