Abstract:
A propagation model is presented for characterizing the channel response for digital systems in urban areas where multiple reflections from buildings are encountered. A d...Show MoreMetadata
Abstract:
A propagation model is presented for characterizing the channel response for digital systems in urban areas where multiple reflections from buildings are encountered. A deterministic ray-tracing propagation model is used to predict the time delay and fading characteristics for the channel in a hypothetical urban area. The analysis shows that due to multiple reflection and diffraction sources, the RMS delay spread of the channel in urban areas can be several hundred nanoseconds, so that very effective equalizers will be required to achieve successful performance of high-data-rate digital systems such as 20-Mb 16-QAM digital HDTV. The channel response results presented also suggest that polarization diversity may be a useful technique for mitigating some of the channel impairments predicted by the propagation model.<>
Published in: IEEE Transactions on Broadcasting ( Volume: 39, Issue: 3, September 1993)
DOI: 10.1109/11.237709
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1.
G.L. Turin, "A statistical model for urban multipath propagation", IEEE Trans. Veh. Technol, vol. VT-21, pp. 1-9, Feb. 1972.
2.
W. L. Stutzman and G. L. Thiele, Antenna Theory and Design, New York:John Wiley & Sons, pp. 447, 1981.
3.
K. J. Gladstone and J. P. McGeehan, "Computer simulation of multipath fading in the land mobile radio environment", IEE Proc., vol. 27, no. 6, pp. 323-330, Dec. 1980.
4.
J. W. McKown and R. L. Hamilton, "Ray-tracing as a design tool for radio networks", IEEE Networks Mag., pp. 21-26, Nov. 1991.
5.
K. S. Schaubach, N. J. Davis and T. S. Rappaport, "A ray-tracing method for predicting path loss and delay spread in microcell environments", Proceedings of the 1992 IEEE Veh. Tech. Society Conf., pp. 932-935, 1992-May.
6.
M. C. Lawton and J. P. McGeehan, "The application of GTD and ray launching techniques to channel modelling for cordless radio systems", Proceedings of the 1992 IEEE Veh. Tech. Society Conf., pp. 125-130, 1992-May.
7.
W. L. Stutzman and G. L. Thiele, Antenna Theory and Design, New York:John Wiley & Sons, pp. 61, 1981.
8.
K. A. Chamberlain and R. J. Leubbers, "An evaluation of Longley-Rice and GTD propagation models", IEEE Trans. Antennas Propagat., vol. AP-30, no. 6, pp. 1093-1098, Nov. 1982.
9.
R. G. Kouyoumjian and P. H. Pathak, "A uniform geometric theory of diffraction for an edge on a perfectly conducting surface", Proc. IEEE, vol. 62, no. 11, pp. 1448-1461, Nov. 1974.
10.
R. J. Leubbers, "Finite conductivity uniform GTD versus knife edge diffraction in prediction of propagation path loss", IEEE Trans. Antennas Propagat., vol. AP-32, no. 1, pp. 70-76, Jan. 1984.
11.
J. L. Eaves and E. K. Reedy, Principles of Modern Radar, New York:Van Nostrand Reinhold Company, pp. 9-11, 1987.
