Initial-Estimation-Based Adaptive Carrier Recovery Scheme for DVB-S2 System

Author

Gong, Fengkui ; Shang, Guichao ; Li, Yi ; Peng, Kerong

Author_Institution

State Key Lab. of ISN, Xidian Univ., Xi´´an, China

Volume

58

Issue

4

fYear

2012

Firstpage

654

Lastpage

659

Abstract

A data-aided (DA) carrier recovery (CR) method, which can select different coarse frequency estimation (CFE) paths adaptively according to the initial-estimation of frequency offset, is proposed for the 2nd Generation Digital Video Broadcasting Satellite (DVB-S2) system to accomplish the convergence within at most 400 pilot blocks. The well-known two-step CR scheme is used for the consideration of precision and speed, whereas both the CFE and the fine frequency estimation (FFE) adopt L&R algorithm as their basic frequency estimator so that the same correlation operation can be used by both of them to decrease the realization complexity. Optimum threshold values for different CFE paths are determined by analyzing the ill-selection probability and robust Root Mean Square Error (RMSE) performance has been confirmed by our simulations.

Keywords

digital video broadcasting; direct broadcasting by satellite; frequency estimation; mean square error methods; 2nd generation digital video broadcasting satellite; DVB-S2 system; L&R algorithm; adaptive carrier recovery; coarse frequency estimation paths; data-aided carrier recovery; fine frequency estimation; frequency offset; ill-selection probability; optimum threshold values; robust root mean square error; Complexity theory; Convergence; Correlation; Digital video broadcasting; Frequency estimation; Satellite broadcasting; Carrier recovery; DVB-S2; data-aided; root mean square error;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/TBC.2012.2205654

Filename

6264067