Performance of an adaptive homodyne receiver in the presence of multipath, Rayleigh-fading and time-varying quadrature errors

Author

Çetin, Ediz ; Kale, Izzet ; Morling, Richard C S

Author_Institution

Dept. of Electron. Syst., Westminster Univ., London, UK

Volume

4

fYear

2003

fDate

25-28 May 2003

Abstract

In this paper, we carry out a detailed performance analysis of the blind source separation based I/Q corrector operating at the baseband. Performance of the digital I/Q corrector is evaluated not only under time-varying phase and gain errors but also in the presence of multipath and Rayleigh fading channels. Performance under low-SNR and different modulation formats and constellation sizes is also evaluated. What is more, BER improvement after correction is illustrated. The results indicate that the adaptive algorithm offers adequate performance for most communication applications hence, reducing the matching requirements of the. analog front-end enabling higher levels of integration.

Keywords

Rayleigh channels; adaptive signal processing; blind source separation; error statistics; multipath channels; quadrature phase shift keying; radio receivers; Rayleigh fading channels; adaptive algorithm; adaptive homodyne receiver; baseband operation; blind source separation based I/Q corrector; constellation sizes; low-SNR performance; modulation formats; multipath channels; performance analysis; time-varying quadrature errors; Adaptive algorithm; Baseband; Bit error rate; Blind source separation; Error correction; Fading; Modulation; Performance analysis; Performance gain; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205775

Filename

1205775