A frequency domain approach for non-coherent timing chip-level synchronization for cdma systems

In this paper, we propose a simple computational chip-level non-coherent timing synchronization technique operating in the frequency domain. The proposed technique almost attains the modified Cramer-Rao bound when the system operates with small roll-off values of the transmitter/receiver filters. Furthermore, the frequency domain processing allows to easily mitigate the noxious effect of strong narrowband interference. The proposed method is discussed and analyzed. We provide some analytical and numerical results to show its effectiveness.