Soft information in concatenated codes

Author

Rislow, B. ; Maseng, T. ; Trandem, O.

Author_Institution

NERA Res., Billingstad, Norway

Volume

44

Issue

3

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

284

Lastpage

286

Abstract

A new soft decision criterion is derived. This is useful in communication systems where the combination of modulation, interleaving, and error correction is used. The new algorithm is attractive to implement since traceback techniques can be used and only a little extra memory is required to obtain the soft information associated with every symbol. Furthermore, the operations involved are not recursive and the execution is time independent of the received signal quality. The performance of the new algorithm is typically within 0.25-0.1 dB (bit error rate (BER)=10^-1) of that of a significantly more complex algorithm reported previously

Keywords

concatenated codes; convolutional codes; error correction codes; interleaved codes; minimum shift keying; multipath channels; GMSK; algorithm; bit error rate; communication systems; concatenated codes; convolutional code; error correction; interleaving; modulation; multipath channel; performance; signal quality; soft decision criterion; soft information; traceback techniques; Bit error rate; Block codes; Concatenated codes; Convolutional codes; Error correction; Error probability; Interleaved codes; Maximum likelihood decoding; Maximum likelihood detection; Viterbi algorithm;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.486319

Filename

486319