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Simulation of wideband mobile radio channels using subsampled ARMA models and multistage interpolation

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3 Author(s)
Schafhuber, Dieter ; Inst. of Commun. & Radio-Frequency Eng., Vienna Univ. of Technol., Austria ; Matz, G. ; Hlawatsch, F.

We present a technique for simulating time-varying mobile radio channels. This technique is specifically suited to the small relative Doppler bandwidths of wideband channels encountered in CDMA and OFDM communications. A "subsampled" ARMA innovations filter and multistage interpolation are used to achieve an accurate and computationally efficient approximation of specified or measured Doppler spectra (scattering functions). We discuss the calculation of the ARMA coefficients and the optimal design of the multistage interpolator. Simulation results demonstrate the excellent performance of the proposed channel simulator

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Statistical Signal Processing, 2001. Proceedings of the 11th IEEE Signal Processing Workshop on

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