Characterization of a Mobile Urban Radio Channel with an Improved Multicarrier Sounding Technique

Leonardo H. Gonsioroski, L. da Silva Mello, Carlos R. Ron, L. J. Matos

Abstract


This paper presents results of temporal dispersion characteristics of a broadband channel measured at 2.5 GHz in a dense urban environment. The cumulative distributions of the number of multipath components and the rms delay spread were obtained, as well as the mean value and the standard deviation of the rms delay spread. A new sounding technique was employed that combines characteristics of the multicarrier sounding and pulse compression sounding techniques by using a pseudo-noise (PN) sequence as input to a multicarrier OFDM modulator. It was found that it provides improvement over the traditional multicarrier sounding technique by allowing better synchronization of the received signal and the capture of a higher number of multipath components.

Keywords


Broadband sounding, channel characterization and radio propagation.

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References


Parsons, J. D., D. A. Demery and A. M. D. Turkmanil, "Sounding techniques for wideband mobile radio channels: a review``, IEE Processing communication, speech and vision, Vol. 138, No. 5, 437-446, 1991.

Rappaport, T. S., "Characterization of UHF Radio Channels in Factory Buildings``, IEEE Transactions on Antennas and Propagation, vol. 37, pp. 1058-1069, 1989.

D. Cox, "Delay Doppler characteristics of multipath propagation at 910 MHz in a suburban mobile radio environment``, IEEE Transactions on Antennas and Propagation, vol. 20, no. 5, pp. 625-635, Jan. 1972.

Silva R. M. L., Siqueira G. L., Gonsioroski L. H., Ron C. R. V., "Comparison between OFDM and STDCC mobile channel sounders at 3.5 GHz``, Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol. 12, No. 1, 2013

Acosta-Marum, Guillermo, "Measurements, Modeling, and OFDM Synchronization for the Wideband Mobile-to-Mobile Channel``, PhD Thesis, Georgia Institute of Technology, 2007.

Propagation data and prediction methods for the planning of short-range outdoor radiocommunication systems and radio local area networks in the frequency range 300 MHz to 100 GHz, Recommendation ITU-R P.1411-6, 2012.

L. Wei and C. Schlegel, "Synchronization requirements for multi-user OFDM on satellite mobile and two-path Rayleigh fading channels``, IEEE Trans. Commun., vol. 43, pp. 887–895, 1995.

J. A. C. Bingham, "Multicarrier modulation for data transmission: An idea whose time has come``, IEEE Commun. Mag., vol. 28, no. 5, pp. 5–14, 1990.

T. Pollet and M. Moeneclaey, "Synchronizability of OFDM signals``, in Proc. Globecom'95, Singapore, vol. 3, pp. 2054–2058, Nov. 1995.

T. Pollet, M. van Bladel, and M. Moeneclaey, "BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise``, IEEE Trans. Commun., vol. 43, pp. 191–193, 1995.

T. Lv, H. Li, "Joint estimation of symbol timing and carrier frequency offset of OFDM signals over fast time-varying multipath channels``, IEEE Trans. Signal Process., vol. 53, no. 12, pp. 4526-4535, 2005.

Van de Beek, J.J., M. Sandell, P.O. Borjesson, "ML estimation of time and frequency offset in OFDM systems", IEEE Transactions on Signal Processing, vol. 45, no. 7, July 1997.

Schmidl, T.,, D. Cox, "Robust frequency and timing synchronization for OFDM", IEEE Transactions on Communications, vol. 45, no. 12, pp. 1613-1621, Dec. 1997.

Minn, H., Zeng, M., e Bhargava, V. K., "On timing offset estimation for OFDM systems``, IEEE Commun. Lett., vol. 4, pp. 242–244, 2000 .

PARK, B., CHEON, H., KANG, C., e HONG, D., "A Novel Timing Estimation Method for OFDM Systems``, IEEE Commun. Lett. Vol.7, pp.239-241, 2003.

Elvino S. Sousa, V. M. Jovanovié, C. Daigneault, "Delay Spread Measurements for the Digital Cellular Channel in Toronto``, IEEE Trans. on Vehicular Technology, Vol.43, No.4, pp.837-847, 1999.

A. Algans, K. I. Pedersen, P. E. Mogensen, "Experimental analysis of the joint statistical properties of azimuth spread, delay spread, and shadow fading", IEEE Journal on Selected Areas in Communications, V.20, p.523-531, 2006.

X. Zhao, J. Kivinen, P.Vainikainen, K. Skog, "Propagation Characteristics for Wideband Outdoor Mobile Communications at 5.3 GHz", IEEE Journal on Selected Areas in Communications, V.20, April 2002, p.507-514.


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