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The correlation-based method is the popular solution for timing synchronization. The performance of this method is decreased in low signal-to-noise ratio (SNR) because of the limited correlation peaks. In this paper, a new method based on more peaks by using a new structure of the short preamble is proposed. Simulation results show that the proposed approach greatly improves the estimation accuracy...
The design of a carrier-less RF-correlation-based IR-UWB TRX front-end in 130 nm CMOS is presented. Timing synchronization and coherent demodulation are implemented directly in the RF domain, enabling energy-efficient wireless communication at Gb/s data rates. A 25 ps timing resolution is achieved by a two-step synchronizer. Occupying 6.4 mm2 chip area, the TRX achieves a maximum data rate of 2 Gbps...
An improved synchronization scheme based on sliding correlator and phase-locked loop (PLL) is presented and analyzed for impulse-based ultra-wideband (UWB). First of all, properties of Gaussian group pulses are explored as rationales for the presented synchronization scheme. Working principles of the synchronization scheme are given, where there are phase and frequency synchronization steps performing...
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