Iterative decoding of coded GMSK system with differential detection

Author

Qin, Guan-Feng ; Zhou, Shi-dong ; Yao, Yan

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

1

fYear

1999

Firstpage

697

Abstract

An iterative decoding scheme for the concatenation of convolutional code and GMSK modulator is presented. The maximum a posteriori probability (MAP) algorithm is applied to a GMSK differential phase detector (DPD). Then we realize the iteration between the demodulation and the subsequent decoder. Compared with the traditional decoding method, simulation results of the new scheme show evident improvement in overcoming the severe intersymbol interference of GMSK signals.

Keywords

concatenated codes; convolutional codes; demodulation; differential detection; intersymbol interference; iterative decoding; maximum likelihood decoding; minimum shift keying; modulation coding; DPD; GMSK differential phase detector; GMSK modulator; MAP algorithm; coded GMSK system; concatenation; convolutional code; decoder; demodulation; differential detection; intersymbol interference; iterative decoding; maximum a posteriori probability algorithm; AWGN; Convolutional codes; Demodulation; Detectors; Filters; Intersymbol interference; Iterative algorithms; Iterative decoding; Phase detection; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference

Conference_Location

Beijing, China

Print_ISBN

7-5635-0402-8

Type

conf

DOI

10.1109/APCC.1999.824995

Filename

824995