Title :
Lowering the Error Floor of LDPC Codes Using Multi-Step Quantization
Author :
Tolouei, Sina ; Banihashemi, Amir H.
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, ON, Canada
Abstract :
A multi-step scheme is proposed for the input quantization of message-passing decoders for low-density parity-check (LDPC) codes. The proposed scheme, which is applicable to both regular and irregular codes, lowers the error floor significantly at the cost of small increase in complexity, memory and latency.
Keywords :
error correction codes; graph theory; iterative decoding; message passing; parity check codes; quantisation (signal); LDPC Codes; error floor; increase complexity; increase latency; increase memory; input message-passing decoder quantization; irregular codes; iterative message-passing algorithms; low-density parity-check codes; multistep quantization; regular codes; Charge carrier processes; Decoding; Error analysis; Iterative decoding; Quantization (signal); Signal to noise ratio; error floor; low-density parity-check (LDPC) codes; message-passing decoder; min-sum; quantization;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.111113.131881
