erformance of Matched-Filter Acquisition for a DS/SSMA System in a Frequency-Selective Fading Channel

Abstract- This paper evaluated t h e performance of a non-coherent parallel matched-filter acquisition scheme with a reference filter ( R F) for a direct-sequence/spread-spectrum multiple access (DS/SSMA) sys tem in a frequency-selective fading channel. Mean acquisition t ime for t h e paralleI MF-R F acquisition scheme is derived for a frequency-selective Rayleigh fading channel. This acquisition scheme employs reference filter t o es t imate t h e variance of interference at t h e ou tpu t of detecting matched filter. To apply for multiuser communication environments, multiple access interference is considered in t h e performance analysis. I t is shown t h a t t h e parallel M F- R F scheme yields smaller mean acquisition t ime t h a n M F schemes without RF for a frequency-selective Rayleigh fading channel. A parallel M F- R F scheme can be applied to t h e reverse link (mobile-to-base s ta t ion) o