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[Author] Mostafa A. R. ELTOKHY(1hit)

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  • A New Analog Correlator Circuit for DS-CDMA Wireless Applications

    Mostafa A. R. ELTOKHY  Boon-Keat TAN  Toshimasa MATSUOKA  Kenji TANIGUCHI  

     
    PAPER-Spread Spectrum Technologies and Applications

      Vol:
    E86-A No:5
      Page(s):
    1294-1301

    A new analog correlator circuit is proposed for direct sequence code division multiple access (DS-CDMA) demodulator. The circuit consists of only 16 switches, 4 capacitors and 2 level shifters. Control sequence requires only three clock phases. Simulation with code length of 127 reveals that the proposed circuit has a good ability to cancel off the charge error and dissipates 3.4mW at 128MHz. The circuit had been designed using a 0.6µm CMOS process. The area of 256µm 245µm is estimated to be 9 times smaller compared to other reported equivalent analog correlators.