Title :
Optimized LDPC codes for partial response channels
Author :
Varnica, Nedeljko ; Kavcic, Aleksandar
Author_Institution :
DEAS, Harvard Univ., Cambridge, MA, USA
Abstract :
We construct codes that can closely approach (and possibly ultimately achieve) the i.i.d. capacity of an intersymbol interference (ISI) channel with inputs confined to binary values. We use the low-density-parity-check (LDPC) degree sequences optimization method proposed by Richardson, Shokrollahi and Urbanke (see IEEE Trans. Inform. Theory, vol.47, p.619-37, February 2001) and appropriately modify it for ISI channels.
Keywords :
channel capacity; intersymbol interference; optimisation; parity check codes; partial response channels; ISI channel; LDPC codes; i.i.d. capacity; intersymbol interference channel; low-density-parity-check degree sequences; optimization; optimized degree sequences; partial response channels; AWGN channels; Channel capacity; Convolution; Intersymbol interference; Optimization methods; Parity check codes; Partial response channels; Random processes; Upper bound; Vectors;
Conference_Titel :
Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7501-7
DOI :
10.1109/ISIT.2002.1023469
