Title :
Validation of a high resolution measurement technique for estimating the parameters of impinging waves in indoor environments
Author :
Tschudin, Martin ; Heddergott, Ralf ; Truffer, Pascal
Author_Institution :
Commun. Technol. Lab., Eidgenossische Tech. Hochschule, Zurich, Switzerland
Abstract :
A novel wideband channel sounding system operating at 24 GHz with an RF bandwidth of 1 GHz is presented. The SAGE (space-alternating generalized expectation maximization) algorithm is used for obtaining high-resolution estimates of the parameters characterizing the impinging waves, i.e. the delays, incidence azimuths, incidence elevations and complex amplitudes. The Cramer-Rao lower bound (CRLB) provides a benchmark of the mean-squared error (MSE). Monte-Carlo simulations show that the MSEs of the parameter estimates are close to their corresponding CRLBs. The reliability of the channel sounder is tested in a predefined scenario consisting of a direct and two reflected waves
Keywords :
Monte Carlo methods; delays; digital simulation; indoor radio; mean square error methods; microwave measurement; microwave propagation; optimisation; parameter estimation; 1 GHz; 24 GHz; CRLB; Cramer-Rao lower bound; Monte-Carlo simulations; RF bandwidth; SAGE algorithm; SHF; channel sounder reliability; complex amplitudes; delays; direct waves; high resolution measurement; high-resolution estimates; impinging waves; incidence azimuths; incidence elevations; indoor environments; mean-squared error; parameter estimation; reflected waves; space-alternating generalized expectation maximization; wideband channel sounding system; Amplitude estimation; Azimuth; Bandwidth; Benchmark testing; Delay estimation; Measurement techniques; Parameter estimation; Propagation delay; Radio frequency; Wideband;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.731430
