An improved jointed bit synchronization techique for high-order QAM signals

Author

Xin Hao ; Xiao Yan ; Qian Wang ; Kaiyu Qin

Author_Institution

Sch. of Astronaut. & Aeronaut., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2013

fDate

26-28 Oct. 2013

Firstpage

304

Lastpage

307

Abstract

A timing synchronization algorithm is proposed in this paper. By using moving average filtering and oscillation eliminate, this algorithm can expand the loop bandwidth 9 times and eliminate the oscillation before convergence. A 256 QAM signal, whose symbol rate is 6.4Mbps and normalized timing error is 0.7, is used to verify the proposed algorithm. Experiment results confirm the efficiency of the proposed algorithm. It takes less than 120 symbol period to converge, and the residual timing error of fractional interval is within 0.05.

Keywords

filtering theory; quadrature amplitude modulation; synchronisation; bit rate 6.4 Mbit/s; high-order QAM signals; improved jointed bit synchronization; loop bandwidth; moving average filtering; normalized timing error; oscillation eliminate; oscillation elimination; residual timing error; symbol rate; timing synchronization; Bandwidth; Convergence; Filtering algorithms; Oscillators; Quadrature amplitude modulation; Synchronization; 256QAM signals; fractional interval; moving average filtering; oscillation eliminate; timing synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Problem-solving (ICCP), 2013 International Conference on

Conference_Location

Jiuzhai

Type

conf

DOI

10.1109/ICCPS.2013.6893512

Filename

6893512