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A Subsampling UWB Impulse Radio Architecture Utilizing Analytic Signaling
Mike Shuo-Wei CHEN Robert W. BRODERSEN
IEICE TRANSACTIONS on Electronics
Publication Date: 2005/06/01
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Analog Circuit and Device Technologies)
UWB, subsampling, impulse radio, analytic signaling, wideband circuit,
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This paper describes a system architecture along with signal processing technique which allows a reduction in the complexity of a 3.1-10.6 GHz Ultra-Wideband radio. The proposed system transmits passband pulses using a pulser and antenna, and the receiver front-end down-converts the signal frequency by subsampling, thus, requiring substantially less hardware than a traditional narrowband approach. However, the simplified receiver front end shows a high sensitivity to timing offset. By proposing an analytic signal processing technique, the vulnerability of timing offset is mitigated; furthermore, a time resolution finer than the sampling period is achieved, which is useful for locationing or ranging applications. Analysis and simulations of system specifications are also provided in this paper.