Slow Modulation Behavior of the FMCW Radar for Wireless Channel Sounding Technology

Author

Yun-Taek Im ; Ali, Mohamed ; Seong-Ook Park

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

Volume

56

Issue

5

fYear

2014

fDate

Oct. 2014

Firstpage

1229

Lastpage

1237

Abstract

A frequency-modulated continuous wave (FMCW) radar is used to sounding wireless channel. An intermediate frequency signal of the FMCW radar can be treated simultaneously as a frequency-domain signal as well as a time-domain signal when the modulation time is sufficiently long. This distinctive compatibility enables the FMCW radar system to measure the normalized impulse response for the power delay profile and Rician K-factor by using an oscilloscope. This theory is fully demonstrated and experiments are performed in the reverberation chamber for the small-scale fading environments of Rayleigh and Rician conditions, and all measurements are verified by using the oscilloscope.

Keywords

CW radar; Rician channels; radar signal processing; reverberation chambers; wireless channels; FMCW radar system; Rayleigh conditions; Rician K-factor; Rician conditions; distinctive compatibility; frequency domain signal; frequency modulated continuous wave; normalized impulse response; oscilloscope; power delay profile; reverberation chamber; slow modulation behavior; small-scale fading environments; time domain signal; wireless channel sounding technology; Antenna measurements; Delays; Frequency measurement; Modulation; Radar; Reverberation chambers; Rician channels; $K$-factor; Channel sounder; Rayleigh; Rician; frequency-modulated continuous wave (FMCW); slow modulation;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2014.2311095

Filename

6804658