Title :
Analog rotating ring decoder for an LDPC convolutional code
Author :
Schaefer, A. ; Moerz, M. ; Hagenauer, J. ; Sridharan, A. ; Costello, D.J., Jr.
Author_Institution :
Inst. for Commun. Eng., Munich Univ. of Technol., Germany
Abstract :
We present an analog rotating ring decoder for decoding an LDPC convolutional code. The decoder architecture uses a window of soft received L-values, K time units in the past and K time units in the future, to decode a given bit. The window of 2K+1 time units is arranged in a ring structure, and decoding proceeds in a continuous fashion by rotating around the ring. Simulation results indicate performance almost identical to that achieved with digital decoding.
Keywords :
analogue processing circuits; channel coding; convolutional codes; decoding; parity check codes; LDPC code; LDPC convolutional code; analog circuit; analog rotating ring decoder; analog transistor circuits; belief propagation algorithms; channel codes; continuous time; digital decoding; discrete time; soft received L-values; AWGN; Additive white noise; Belief propagation; Circuit simulation; Convolutional codes; Delay; Energy consumption; Hardware; Iterative decoding; Parity check codes;
Conference_Titel :
Information Theory Workshop, 2003. Proceedings. 2003 IEEE
Conference_Location :
Paris, France
Print_ISBN :
0-7803-7799-0
DOI :
10.1109/ITW.2003.1216736
