Good and bad training sequences for zero IF sampling edge receivers

Author

Krueger, M. ; Denk, R. ; Yang, B.

Author_Institution

Secure Mobile Solutions, Infineon Technol. AG, Munich, Germany

Volume

4

fYear

2004

fDate

17-21 May 2004

Abstract

In the mobile communication standard GSM/EDGE, the base station can select one of eight training sequence codes as midamble of the downlink transmitted bursts. If the receiving mobile station uses zero intermediate frequency (IF) sampling the channel estimation is sensitive to the DC offset and IQ gain/phase imbalance of the RF transceiver. This note shows, for a common class of channel estimators, that the sensitivity depends on the selected training sequence code. This sensitivity can become significant for 8PSK modulation.

Keywords

cellular radio; channel estimation; mobile radio; phase shift keying; radio receivers; signal sampling; transceivers; 8PSK modulation; DC offset sensitive channel estimation; GSM/EDGE mobile communication standard; RF transceiver IQ gain/phase imbalance; base station selected training sequence codes; downlink transmitted burst midamble; receiving mobile station; zero IF sampling edge receivers; zero intermediate frequency sampling; Base stations; Channel estimation; Code standards; Communication standards; Downlink; Frequency estimation; GSM; Mobile communication; Radio frequency; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8484-9

Type

conf

DOI

10.1109/ICASSP.2004.1327006

Filename

1327006