Title :
EXIT chart based LDPC codes design for 2D ISI channels
Author :
Lingjun Kong ; Guojun Han ; Yong Liang Guan ; Kui Cai ; Kheong-Sann Chan
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
fDate :
Oct. 31 2012-Nov. 2 2012
Abstract :
Optimization of low-density parity-check (LDPC) codes to two dimensional (2D) intersymbol interference (ISI) channels is proposed, which exploits the modified Extrinsic Information Transfer (EXIT) chart. Specifically, a new degree optimization through EXIT chart fitting is proposed, where optimal variable node degree is search by selecting the best regular check node degree to match the check node decoder (CND) curve to the variable node decoder (VND) curve combined with 2d detector. Simulation result shows that the optimized LDPC code of length 13824 bits is 0.35 dB away from the symmetric information rate (SIR) of 2D ISI channels.
Keywords :
decoding; intersymbol interference; optimisation; parity check codes; 2D ISI channels; EXIT chart fitting; LDPC codes; check node decoder curve; extrinsic information transfer; intersymbol interference; low-density parity-check codes; optimal variable node degree; optimization; regular check node degree; symmetric information rate; variable node decoder; word length 13824 bit; AWGN; Detectors; Educational institutions; Parity check codes; Extrinsic Information Transfer (EXIT) chart; Low-density parity-check (LDPC) codes; symmetric information rate (SIR); two dimensional (2D) intersymbol interference (ISI) channels;
Conference_Titel :
APMRC, 2012 Digest
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-4734-1
