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This study describes a method of implementing a fully integrated ultra-low-power (ULP) radio for wireless sensor networks (WSNs). This is achieved using an ad hoc modulation scheme (impulse radio), with a bandwidth of 17.7 MHz in the 2.4 GHz-ISM band and a specific medium access control (MAC) protocol, based on a duty-cycled wake-up radio and a crystal-less clock generator. It is shown that the total...
This paper studies the analog implementation of timing synchronization in impulse radio UWB systems. An insight into various UWB modulation schemes is provided, and an overview of the state-of-the art synchronization techniques is discussed. A novel method is presented for high-speed timing synchronization of UWB receivers in analog domain. The required timing resolution is determined and system-level...
Ultra-wideband (UWB) has become one of the key technologies in wireless communication industries. In this paper we discuss and evaluate the performance of UWB under different channel conditions when it is applied for wireless sensors. The simulation was carried out for various detection and modulation schemes. Simulation results confirm that UWB with coherent detection outperforms the noncoherent...
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