Abstract
A code acquisition scheme is proposed for DS/CDMA systems with multiple antennas. The proposed scheme employs a new search scheme, referred to as sparse search, to utilize multipath signals in reducing mean acquisition time over frequency-selective fading channels. The mean acquisition time performance of the proposed scheme is analyzed and evaluated in frequency-selective Rayleigh fading channels. The performance of the proposed scheme is compared with that of the conventional one. Numerical results show that the proposed acquisition scheme outperforms the conventional one, and that the performance improvement becomes greater as the number of resolvable paths increases. The effects of configuration of multiple antennas and receiver complexity on mean acquisition time are also investigated.
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