An algorithm for Doppler shift and Doppler rate estimation based on pilot symbols

Author

Tian, Le ; Yifei, Cui ; Wei, Jiang

Author_Institution

State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China

fYear

2012

fDate

21-23 April 2012

Firstpage

1626

Lastpage

1629

Abstract

To achieve fast carrier synchronization in low SNR circumstances for burst transmission satellite mobile communication systems, we present a joint-estimation algorithm for Doppler shift and Doppler rate based on pilot symbols. The algorithm selects finite Doppler rate test values, figures out several sets of Doppler shift and Doppler rate using existing low-complexity frequency estimation algorithm, and gets the final estimation result according to ML criterion. The simulation results show that this algorithm has low SNR threshold, and its estimation performance is close to Cramer-Rao Lower Bound (CRLB). The algorithm´s computational complexity is much lower than ML algorithm, and it is very suitable for practical application.

Keywords

Doppler shift; computational complexity; frequency estimation; maximum likelihood estimation; mobile satellite communication; synchronisation; CRLB; Cramer-Rao lower bound; Doppler rate estimation; Doppler shift; ML criterion; SNR threshold; burst transmission satellite mobile communication systems; computational complexity; fast carrier synchronization; finite Doppler rate test values; joint-estimation algorithm; low-complexity frequency estimation algorithm; pilot symbols; Complexity theory; Doppler shift; Estimation; Frequency estimation; Signal to noise ratio; Synchronization; Carrier synchronization; Cramer-Rao lower bound (CRLB); Doppler rate; pilot symbol assisted;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on

Conference_Location

Yichang

Print_ISBN

978-1-4577-1414-6

Type

conf

DOI

10.1109/CECNet.2012.6201618

Filename

6201618