Title :
On punctured serially concatenated turbo codes
Author :
Pietrobon, Steven S.
Author_Institution :
Small World Commun., Payneham, SA, Australia
Abstract :
We define super codes as the serial concatenation of punctured convolutional codes. Puncturing pattern and interleaver design techniques are presented so as to maximise the free distance of the code and thus the performance at very low bit error rates (BER). The performance of super codes is compared to turbo codes. For BERs around 10/sup -5/, turbo codes perform 0.1, 0.4 and 0.6 dB better than super codes for rates 3/4, 1/2 and 1/3, respectively. However, due to the use of serial concatenation, super codes have an interleaver gain of N/sup -2/, compared to only N/sup -1/ for turbo codes and interleaver size N. Thus, super codes are expected to perform significantly better at BERs around 10/sup -10/.
Keywords :
concatenated codes; convolutional codes; error statistics; interleaved codes; iterative decoding; turbo codes; BER; bit error rate; interleaver design; iterative decoding; punctured convolutional codes; serially concatenated codes; super codes; turbo codes; Australia; Bit error rate; Concatenated codes; Convolutional codes; Error correction; Gain; Iterative decoding; Quadrature phase shift keying; Signal to noise ratio; Turbo codes;
Conference_Titel :
Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-7147-X
DOI :
10.1109/ACSSC.2001.986917
