Title

Use of UWB impulse radio technology in in-car communications: power limits and optimization

Document Type

Journal Article

Publisher

Institute of Electrical and Electronics Engineers Inc.

Place of Publication

United States

School

School of Engineering

RAS ID

24947

Comments

Originally published as: Krebesz, T., Kolumban, G., Chi, K. T., Lau, F., & Dong, H. (2017). Use of UWB Impulse Radio Technology in In-Car Communications: Power Limits and Optimization. IEEE Transactions on Vehicular Technology. 66(7), 6037-6049. Article available here.

Abstract

In-car wireless data communications systems require a short-range unlicensed radio communications technology that causes a very low level of interference in the other, already deployed radio links and networks, offers low and medium data rate, can reuse the already occupied radio-frequency (RF) bands, and assures low probability of message collisions. Ultrawide band (UWB) impulse radio employs RF pulses with very short duration to carry the information; consequently, it is an optimal candidate for the in-car wireless communications and intravehicular wireless sensor networks. Data rate and shape of RF carrier pulse determine the performance of a UWB radio link. To limit the interference caused, the maximum power radiated by an UWB device is restricted by the Federal Communications Commission (FCC) in the U.S. Introducing a new mathematical model and starting from the FCC regulations, analytical expressions for the calculation of FCC power limits are derived here. It is shown that the low-A nd high-rate UWB impulse radio systems are peak and average power limited, respectively. The relationship between the mathematical model and the parameters of an UWB carrier pulse used in a built UWB radio is established. The performances of RF carrier pulses known from the literature are evaluated and compared. All expressions derived are verified by measurements

DOI

10.1109/TVT.2017.2647849

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