NDLI: Parametric Modeling of Wideband and Ultrawideband Channels in Frequency Domain

Content Provider	IEEE Xplore Digital Library
Author	Guoxiang Gu Xiang Gao Jianqiang He Naraghi-Pour, M.
Copyright Year	1967
Abstract	This paper investigates parametric modeling of wideband and ultrawideband (UWB) wireless channels in the frequency domain. By uniform sampling of the channel frequency response (CFR), an equivalent discrete channel can be obtained. The channel impulse response (CIR) of the discretized channel can be obtained by applying inverse discrete Fourier transform to the uniformly spaced CFR samples. Both uniformly spaced CFR and CIR samples can be extended to periodic sequences with the same period. It is shown that parametric modeling in the frequency domain is possible, if and only if the uniformly spaced CFR samples satisfy the wide-sense stationary (WSS) condition that is equivalent to the uncorrelated scattering (US) condition for the discrete CIR. This new WSS-US condition is fulfilled if the underlying continuous-time wideband or UWB channel is WSSUS with independent path gains and arrival times. It is also shown that there exists an analytic relation between the power spectral density of the uniformly spaced CFR samples and the power profile of the discrete CIR that satisfies the WSS-US condition. The main goal of this paper is to demonstrate that the wideband and UWB channels can be adequately modeled by low-order autoregressive (AR) and/or AR moving average models in the frequency domain. The results on channel modeling are illustrated by simulation examples.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	1600
Ending Page	1612
Page Count	13
File Size	519552
File Format	PDF
ISSN	00189545
Volume Number	56
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultra wideband technology Parametric statistics Frequency domain analysis Discrete Fourier transforms Sampling methods Frequency response Scattering Computer simulation Multipath channels ultrawideband (UWB) channel Autoregressive (AR) processes channel modeling multipath channels power delay profiles
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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