Ultra-wideband channel modeling on the basis of information-theoretic criteria
AuthorsUlrich G. Schuster, Helmut Bölcskei, and Giuseppe Durisi
ReferenceProc. of IEEE International Symposium on Information Theory (ISIT), Adelaide, Australia, pp. 97-101, Sept. 2005.
AbstractWe present results of two ultra-wideband (UWB) channel measurement campaigns in the 2-5 GHz frequency band, and use Akaike's Information Criterion (AIC) to determine suitable distributions for the channel impulse response taps. Despite the large bandwidth, AIC supports the complex Gaussian tap distribution, with mean depending on the measurement setting. We estimate the empirical covariance matrix of the channel impulse response, and demonstrate that the number of corresponding significant eigenvalues scales approximately linearly with bandwidth, albeit we find that the channel taps are correlated.
KeywordsUltra-wideband (UWB), channel modeling, Akaike's Information Criterion (AIC), uncorrelated scattering
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