Analysis of Turbo Decoding Algorithm In LTE System

Author

Huahua, Wang ; Wenwen, Liu

Author_Institution

Chongqing Key Lab. of Mobile Commun., ChongQing Univ. of Posts & Telecommun., Chongqing, China

fYear

2012

fDate

29-31 May 2012

Firstpage

1741

Lastpage

1744

Abstract

Turbo code, also named Parallel Concatenated Convolutional Code (PCCC), is used for LTE (long term evolution) system for its good error correction ability and anti-interference ability. This paper presents the algorithm of MAP (Maximum A Posteriori probability) and improved MAP algorithm which based on SISO (soft input soft output).The ability of MAP algorithm and improved MAP algorithm are analyzed over the length of data for code, iterative times and complexity of decoding. Finally, the simulation results of each algorithm will be shown.

Keywords

Long Term Evolution; concatenated codes; convolutional codes; error correction codes; iterative decoding; maximum likelihood estimation; turbo codes; LTE system; Long Term Evolution system; MAP algorithm; PCCC; SISO; antiinterference ability; error correction ability; iterative decoding; maximum a posteriori probability algorithm; parallel concatenated convolutional code; soft input soft output; turbo decoding algorithm; Binary phase shift keying; Bit error rate; Data models; Decoding; Iterative decoding; Turbo codes; White noise; LTE; Log-MAP algorithm; MAP algorithm; Max-Log-MAP algorithm; Turbo code;

fLanguage

English

Publisher

ieee

Conference_Titel

Fuzzy Systems and Knowledge Discovery (FSKD), 2012 9th International Conference on

Conference_Location

Sichuan

Print_ISBN

978-1-4673-0025-4

Type

conf

DOI

10.1109/FSKD.2012.6233741

Filename

6233741