Iterative decoding and channel parameter estimation algorithms for repeat-accumulate codes

Author

Oh, Wangrok ; Cheun, Kyungwhoon

Author_Institution

Div. of Electr. & Comput. Eng., Pohang Univ. of Sci. & Technol., South Korea

Volume

53

Issue

10

fYear

2005

Firstpage

1597

Lastpage

1602

Abstract

The sensitivity of the iterative decoder for repeat-accumulate (RA) codes to carrier phase and channel signal-to-noise ratio estimation errors is investigated, and efficient algorithms to estimate and correct these errors are developed. The behavior of RA codes with imperfect channel estimation is different from that of turbo codes, and correction algorithms specific to RA codes must be formulated. The proposed algorithms use the soft information generated within the iterative decoder, and thus, are not only hardware-efficient, but also offer excellent performance.

Keywords

channel coding; channel estimation; error correction codes; iterative decoding; turbo codes; carrier phase; channel parameter estimation algorithms; channel signal-to-noise ratio estimation errors; iterative decoding; repeat-accumulate codes; turbo codes; Channel estimation; Error correction codes; Estimation error; Hardware; Iterative algorithms; Iterative decoding; Parameter estimation; Phase estimation; Signal to noise ratio; Turbo codes; Iterative decoding; phase synchronization; repeat–accumulate (RA) codes; signal-to-noise ratio (SNR) estimation;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2005.857150

Filename

1516273