Joint frame synchronization and belief propagation decoding for quasi-cyclic LDPC-coded system under pseudorandom noise disturbance

Author

Chen, Zhixiong ; Yuan, Jinsha

Author_Institution

Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Baoding, China

Volume

2

fYear

2009

fDate

8-9 Aug. 2009

Firstpage

583

Lastpage

586

Abstract

Because of the quasi-cyclic nature of Quasi-Cyclic LDPC (QC-LDPC) codes, there are ramps in the frame synchronization searching process. A pilotless code-aided frame synchronization algorithm joint with improved BP decoding for QC-LDPC coded system under PN disturbance to eliminate the ramps is proposed in this paper. Simulation results show the validity of the modified BP decoding algorithm and outstanding synchronization performance compared to the algorithm before improvement and hard decision frame synchronization proposed by Dong-U Lee.

Keywords

belief networks; decoding; parity check codes; random noise; search problems; synchronisation; belief propagation decoding algorithm; joint frame synchronization search process; pseudorandom noise disturbance; quasi cyclic LDPC-coded system; Belief propagation; Communication system control; Control systems; Degradation; Hardware; Iterative algorithms; Iterative decoding; Parity check codes; Power engineering computing; Signal to noise ratio; BP decoding; PN code; Quasi-Cyclic LDPC code; code-aided; frame synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing, Communication, Control, and Management, 2009. CCCM 2009. ISECS International Colloquium on

Conference_Location

Sanya

Print_ISBN

978-1-4244-4247-8

Type

conf

DOI

10.1109/CCCM.2009.5267829

Filename

5267829