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Analysis of diversity and equalization techniques applied to M-QAM digital mobile radio systems

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2 Author(s)
A. Valdovinos ; Dept. de Teoria del Senyal i Comunicacions, Univ. Politecnica de Catalunya, Barcelona, Spain ; F. J. Casadevall

Presents an investigation of diversity and/or equalization techniques applied to 4 and 16-QAM TDMA radio systems for rapid fading dispersive channels. In particular, typical urban (TU) environments have been considered. A least sum of squared errors (LSSE) channel estimator has been introduced in order to allow the analytic calculation of the equalizer coefficients. By means of simulation methods the authors have found that a degradation of 4 dB can be expected in relation to ideal estimation. Furthermore, the degrading effects of non-linear power amplifiers have been analyzed and a degradation of 2 dB has been found

Published in:

Vehicular Technology Conference, 1994 IEEE 44th

Date of Conference:

8-10 Jun 1994