Title :
On quantization of low-density parity-check coded channel measurements
Author :
Liveris, Angelos D. ; Georghiades, Costas N.
Author_Institution :
Electr. Eng. Dept., Texas A&M Univ., College Station, TX, USA
Abstract :
We study the effects of quantization at the output of a binary-input additive white Gaussian noise (BIAWGN) channel on the performance of low-density parity-check (LDPC) codes. The LDPC decoder works with unlimited precision. The quantizer design is based on either optimizing the equivalent channel capacity, cutoff-rate, mean-squared error (MSE) or the LDPC code convergence. All the approaches are compared in search of the most appropriate design criterion.
Keywords :
AWGN channels; channel capacity; convergence; mean square error methods; parity check codes; AWGN; LDPC; binary-input additive white Gaussian noise channel; channel capacity; channel measurements; code convergence; cutoff-rate; low-density parity-check codes; mean-squared error; quantization; Additive white noise; Bit error rate; Convergence; Decoding; Design optimization; Electric variables measurement; Noise measurement; Parity check codes; Quantization; Turbo codes;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258517
