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Time-Series Model for Wireless Fading Channels in Isotropic and Non-Isotropic Scattering Environments

Sharma, P (2005) Time-Series Model for Wireless Fading Channels in Isotropic and Non-Isotropic Scattering Environments. In: IEEE Communications Letters, 9 (1). 46- 48.


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An autoregressive (AR) model is presented for isotropic and non-isotropic scattering environments characterized by Rice factor 0 \leq K < \infty. It is shown that at least a second order AR process is required to model the damped sinusoidal autocorrelation function (ACF) inherent in such environments. The model parameters are obtained by minimizing the squared error between the actual and the estimated ACF. This approach is shown to improve the ACF approximation as compared to the traditional Yule-Walker method. The model based simulator exhibits an order of magnitude gain in time complexity as compared to the sum of sinusoids method.

Item Type: Journal Article
Publication: IEEE Communications Letters
Publisher: IEEE
Additional Information: �©2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Time-series model;isotropic scattering channel;non-isotropic scattering channel;fading channel
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited: 03 Aug 2005
Last Modified: 19 Sep 2010 04:19
URI: http://eprints.iisc.ac.in/id/eprint/3443

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