Study of Early Stopping Criteria for Turbo Decoding and Their Applications in WCDMA Systems

Author

Wang, Zhongfeng ; Zhang, Yuping ; Parhi, Keshab K.

Author_Institution

Sch. of EECS, Oregon State Univ., Corvallis, OR

Volume

3

fYear

2006

fDate

14-19 May 2006

Abstract

This paper presents a systematic study of early stopping criteria for Turbo decoding. First, statistical analysis is carried out on numerous hard/soft variables that may be used in an early stopping criterion. Desirable variables are suggested based on their statistical properties. Simulation results show that any stopping criteria based on a single variable will have BER/FER performance loss. Two criteria, each of which uses two variables, are recommended in this paper and neither of them will result in any performance loss. It is also shown in this paper that the thresholds for these variables should be set to be proportional to the logarithm of the block size instead of being proportional to the block size

Keywords

broadband networks; code division multiple access; decoding; error statistics; statistical analysis; turbo codes; BER-FER performance loss; WCDMA systems; bit error rate; block size; early stopping criteria; frame error rate; statistical analysis; turbo decoding; wideband cod division multiple access; Application software; Bit error rate; Delay; Energy consumption; Error correction codes; Iterative decoding; Multiaccess communication; Performance loss; Statistical analysis; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on

Conference_Location

Toulouse

ISSN

1520-6149

Print_ISBN

1-4244-0469-X

Type

conf

DOI

10.1109/ICASSP.2006.1660829

Filename

1660829