Abstract
One of the main assumptions in Clarke's classic channel model is isotropic scattering, i.e., uniform distribution for the angle of arrival (AOA) of multipath components at the mobile station. However, in many mobile radio channels we encounter nonisotropic scattering, which strongly affects the correlation function and power spectrum of the complex envelope at the mobile receiver. In this contribution, we propose the use of the versatile von Mises angular distribution, which includes and/or closely approximates important distributions like uniform, impulse, cardioid, Gaussian, and wrapped Gaussian, for modeling the nonuniform AOAs at the mobile. Based on this distribution, the associated correlation function and power spectrum of the complex envelope at the mobile receiver are derived. The utility of the new results is demonstrated by comparison with the correlation function estimates of measured data.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 425-434 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Vehicular Technology |
| Volume | 51 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 2002 |
Bibliographical note
Funding Information:Manuscript received September 16, 1999; revised November 29, 2000. The work of A. Abdi and M. Kaveh were supported in part by the National Science Foundation under the Wireless Initiative Program Grant 9979443. A. Abdi is with the Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ 07102 USA (e-mail: abdi@adm.njit.edu). J. A. Barger is with the Department of Electrical Engineering, University of Texas at Tyler, Tyler, TX 75701 USA. M. Kaveh is with the Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455 USA. Publisher Item Identifier S 0018-9545(02)02515-X.
Keywords
- Angle-of-arrrival correlation
- Fading channels
- Multipath channels
- Nonisotropic scattering
- Spectrum