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Noncoherent receivers are the practical solutions for impulse radio (IR) ultra-wideband (UWB) systems due to their low-complexity and low-cost implementation. However, this simplicity is achieved at the expense of some performance degradation. In this paper, we propose the utilization of time reversal (TR) technique to improve the performance of a recently presented noncoherent detection scheme, called...
We study the physical layer design of a distributed time-division multiple access (TDMA) protocol for wireless body area networks (WBAN). The distributed TDMA scheme is derived from a bio-inspired algorithm known as Pulse-Coupled Oscillator (PCO), in which each node in the network updates its state based on its knowledge of the neighborhood. ON-OFF ultra wide band (UWB) modulation is used by the sensors...
The Expectation-Maximization (EM) algorithm is studied to perform channel estimation in a low cost and high data rate impulse radio UWB receiver. The system under consideration uses a pulse position modulation with a simple analog energy detector. In order to overcome the problems inherent to high data rates, such as inter-symbol interferences, a probabilistic equalizer is used. The EM algorithm and...
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