A Blind Frequency Domain Method for DS-CDMA Synchronization using Antenna Arrays

Andreas Jakobsson , Systems and Control, Uppsala university,
A. Lee Swindlehurst , Brigham Young University, Provo, Utaha,
David Astély , Signal Processing, KTH, Stockholm and
Claes Tidestav , Signals and Systems, Uppsala university.

32nd Asilomar Conference on Signals, Systems and Computers, November, 1998.

Abstract:

A blind frequency domain method for estimating the propagation delay of DS-CDMA signals is presented. The algorithm is formulated using an antenna array, and it uses the fact that the spatially and temporally correlated additive noise, consisting of both interfering user and thermal noise, will be asymptotically uncorrelated on the FFT frequency grid.

The algorithm is computationally simple, and can be efficiently implemented using the FFT algorithm. Simulations illustrate that near-far resistance can be achieved using spatial diversity.

Source:

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