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Effect of clock offset on an impulse radio ultra wideband ranging system with comparators

Effect of clock offset on an impulse radio ultra wideband ranging system with comparators

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Impulse radio ultra wideband (IR-UWB) can achieve high resolution in ranging because it uses a very short pulse with a duration of less than 1 ns. In order to reduce cost and power consumption, a ranging system with high-speed comparators has been proposed. In this system, it is necessary to reduce noise power through averaging the comparator outputs. The authors evaluate the effect of clock offset on the averaging process, and a two-stage averaging scheme for the IR-UWB ranging system is proposed. Through computer simulation, it is proved that the proposed scheme can reduce the effect of the clock offset with appropriate numbers of initial averaging.

http://iet.metastore.ingenta.com/content/journals/10.1049/iet-com.2008.0334
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