Performance Evaluation of Asymmetric Turbo Codes Using Log-MAP Decoding Technique

2011 ◽  
Author(s):  
Abhishek ◽  
Sanjeet Kumar ◽  
Saswat Chakrabarti
Keyword(s):  
Performance Evaluation ◽  
Turbo Codes ◽  
Map Decoding ◽  
Log Map

Constant log-MAP decoding algorithm for duo-binary turbo codes

2006 ◽  
Vol 42 (12) ◽  
pp. 709 ◽  
Author(s):  
S. Papaharalabos ◽  
P. Sweeney ◽  
B.G. Evans
Keyword(s):  
Turbo Codes ◽  
Decoding Algorithm ◽  
Map Decoding ◽  
Log Map

Improved log-MAP decoding algorithm for turbo-like codes

2006 ◽  
Vol 10 (3) ◽  
pp. 186-188 ◽  
Author(s):  
Hao Wang ◽  
Hongwen Yang ◽  
Dacheng Yang
Keyword(s):  
Decoding Algorithm ◽  
Map Decoding ◽  
Log Map

scholarly journals Efficient MAP-algorithm implementation on programmable architectures

2003 ◽  
Vol 1 ◽  
pp. 259-263 ◽  
Author(s):  
F. Kienle ◽  
H. Michel ◽  
F. Gilbert ◽  
N. Wehn
Keyword(s):  
Turbo Codes ◽  
Communication Systems ◽  
Building Blocks ◽  
Communication Performance ◽  
Channel Decoding ◽  
Turbo Decoder ◽  
Decoding Algorithms ◽  
Map Algorithm ◽  
Algorithm Implementation ◽  
Log Map

Abstract. Maximum-A-Posteriori (MAP) decoding algorithms are important HW/SW building blocks in advanced communication systems due to their ability to provide soft-output informations which can be efficiently exploited in iterative channel decoding schemes like Turbo-Codes. Multi-standards demand flexible implementations on programmable platforms. In this paper we analyze a quantized turbo-decoder based on a Max-Log-MAP algorithm with Extrinsic Scaling Factor (ESF). Its communication performance approximate to a Turbo-Decoder with a Log-MAP algorithm and is less sensitive to quantization effects. We present Turbo-Decoder implementations on state-of-the-art DSPs and show that only a Max-Log-MAP implementation fulfills a throughput requirement of ~2 Mbit/s. The negligible overhead for the ESF implementation strengthen the use of Max-Log-MAP with ESF implementation on programmable platforms.

A Study on Performance Evaluation of the Asymmetric Turbo Codes

2008 ◽  
Author(s):  
Byoung-Sup Shim ◽  
Seok-Jun Choi ◽  
Hyoung-Keun Park ◽  
Sun-Youb Kim ◽  
Yu-Chan Ra
Keyword(s):  
Performance Evaluation ◽  
Turbo Codes

Combined Max-Log-MAP and Log-MAP of turbo codes

2004 ◽  
Vol 40 (4) ◽  
pp. 251 ◽  
Author(s):  
S.-J. Park
Keyword(s):  
Turbo Codes ◽  
Log Map
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