Icc 2005: ieee international conference on communications, vols 1-5 pages:2812-2817
IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS
IEEE International Conference on Communications (ICC 2005) Seoul, SOUTH KOREA, MAY 16-20, 2005
This paper describes a complete system architecture for an ultra-low power, pulsed UWB receiver in the 0-960MHz band for low data rate communication (10kbps) in sensor networks, together with its acquisition algorithms and performance evaluation. Power consumption of this receiver is decreased impressively in relation to common fully digital receivers by shifting the matched filter operation to the analog domain, by using efficient acquisition schemes and by introducing extreme parallelism in the baseband. The optimal trade-off between a low power design and a good performance gain is searched. Sub 10mW active power and sub 10uW standby power are targeted, to achieve an average power consumption (analog + baseband) of 70uW for data rates of 10kbps, while realizing a processing gain of almost MO.