The UWB-OFDM Channel Analysis in Frequency

In this paper, the ultra-wideband channel with orthogonal frequency division multiplexing (UWB-OFDM) is analyzed in the frequency domain. For UWB-OFDM channels with log-normal fading in the time domain, we show that the amplitude of each subcarrier can be approximated by a Nakagami-m random variable, where the fading parameter, the mean power and the correlation coefficient are expressed in terms of the following parameters: time arrival of the clusters, inter-arrival time of rays inside clusters, and power decay constants of rays and clusters.

[1]  Norman C. Beaulieu,et al.  Error rate of OFDM signals on frequency selective Nakagami-m fading channel , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[2]  Kung Yao,et al.  Nakagami-m fading modeling in the frequency domain for OFDM system analysis , 2003, IEEE Communications Letters.

[3]  Anna Scaglione,et al.  Optimal adaptive precoding for frequency-selective Nagakami-m fading channels , 2000, Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152).

[4]  A.A.M. Saleh,et al.  A Statistical Model for Indoor Multipath Propagation , 1987, IEEE J. Sel. Areas Commun..

[5]  Homayoun Hashemi,et al.  Impulse Response Modeling of Indoor Radio Propagation Channels , 1993, IEEE J. Sel. Areas Commun..

[6]  J. Foerster,et al.  Channel modeling sub-committee report final , 2002 .

[7]  Andreas F. Molisch,et al.  Ultrawideband propagation channels-theory, measurement, and modeling , 2005, IEEE Transactions on Vehicular Technology.

[8]  M. Nakagami.  The m-Distribution—A General Formula of Intensity Distribution of Rapid Fading , 1960 .

[9]  G.R. Aiello,et al.  Design of a multiband OFDM system for realistic UWB channel environments , 2004, IEEE Transactions on Microwave Theory and Techniques.