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

Author

Schafhuber, Dieter ; Matz, Gerald ; Hlawatsch, Franz

Author_Institution

Inst. of Commun. & Radio-Frequency Eng., Vienna Univ. of Technol., Austria

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

571

Lastpage

574

Abstract

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

Keywords

Doppler broadening; OFDM modulation; autoregressive moving average processes; broadband networks; code division multiple access; digital filters; interpolation; mobile radio; time-varying channels; ARMA innovations filter; CDMA; Doppler bandwidths; Doppler spectra; OFDM; channel simulator; multistage interpolation; optimal design; scattering functions; time-varying mobile radio channels; wideband channels; Bandwidth; Computational modeling; Filters; Interpolation; Land mobile radio; Mobile communication; Multiaccess communication; OFDM; Technological innovation; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Print_ISBN

0-7803-7011-2

Type

conf

DOI

10.1109/SSP.2001.955351

Filename

955351