Title :
Hybrid concatenated codes and iterative decoding
Author :
Divsalar, Dariush ; Pollara, Fabrizio
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
29 Jun-4 Jul 1997
Abstract :
A hybrid concatenated code is a combination of parallel and serial concatenated codes. Here we consider an example with three codes and two interleavers. An upper bound to the bit error rate (BER) of the hybrid code is obtained. Design rules for the three component codes that maximize the interleavers gain and the asymptotic slope of the BER curves are discussed. A low-complexity iterative decoding algorithm with near maximum-likelihood performance is proposed. Comparisons with “turbo codes” and with serially concatenated codes show that the hybrid scheme offers better performance at very low BER
Keywords :
concatenated codes; convolutional codes; interleaved codes; iterative methods; maximum likelihood decoding; BER curves; asymptotic slope; bit error rate; design rules; hybrid concatenated codes; interleavers gain; low-complexity iterative decoding algorithm; near maximum-likelihood performance; parallel concatenated codes; performance; serial concatenated codes; three component codes; turbo codes; upper bound; Bit error rate; Concatenated codes; Electronic mail; Hydrogen; Iterative decoding; Laboratories; Performance gain; Propulsion; Signal to noise ratio; Space technology;
Conference_Titel :
Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on
Conference_Location :
Ulm
Print_ISBN :
0-7803-3956-8
DOI :
10.1109/ISIT.1997.612925
