Data-aided frequency synchronization under interference limited conditions

Author

Grotz, Joel ; Ottersten, Bjorn ; Krause, Jens

Author_Institution

Signals, Sensors & Syst., R. Inst. of Technol., Stockholm, Sweden

Volume

4

fYear

2005

fDate

30 May-1 June 2005

Firstpage

2683

Abstract

Data-aided multi-user burst frequency synchronization under interference limited conditions is analyzed. It is assumed that a unique-word based synchronization mechanism is used to achieve synchronization. In a first approach this unique-word is assumed to be located at the beginning of the burst structure. The interference represents frequency-adjacent bursts that are coarsely time synchronous. This corresponds to a typical multi frequency (MF) TDMA system with co-channel interference (CCI) limited minimal frequency separation. A novel approach is analyzed to reduce the interference impact of the carrier offset estimation, applying interference cancellation iteratively to increase the estimation accuracy. We demonstrate improved frequency synchronization with this novel approach of iterative burst synchronization.

Keywords

cochannel interference; interference suppression; multiuser channels; synchronisation; time division multiple access; cochannel interference limited minimal frequency separation; data-aided multiuser burst frequency synchronization; interference cancellation; interference limited conditions; multifrequency TDMA system; unique-word based synchronization mechanism; AWGN; Channel spacing; Digital video broadcasting; Frequency estimation; Frequency synchronization; Interchannel interference; Radiofrequency interference; Satellite broadcasting; Sensor systems; Transmitters; Data-aided frequency synchronisation; interference; multi-user synchronisation;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st

ISSN

1550-2252

Print_ISBN

0-7803-8887-9

Type

conf

DOI

10.1109/VETECS.2005.1543822

Filename

1543822