TY - JOUR
T1 - Decoding low density parity check codes with finite quantization bits
AU - Ping, Li
AU - Leung, W. K.
PY - 2000/2
Y1 - 2000/2
N2 - This letter is concerned with the implementation issue of the sum-product algorithm (SPA) for decoding the low density parity check codes. It is shown that the direct implementation of the original form of SPA is sensitive to the quantization effect. We propose a parity likelihood ratio technique to overcome the problem. It is shown that for comparable performance the new method can be implemented with much less quantization bits, which can lead to considerably lower decoding cost.
AB - This letter is concerned with the implementation issue of the sum-product algorithm (SPA) for decoding the low density parity check codes. It is shown that the direct implementation of the original form of SPA is sensitive to the quantization effect. We propose a parity likelihood ratio technique to overcome the problem. It is shown that for comparable performance the new method can be implemented with much less quantization bits, which can lead to considerably lower decoding cost.
UR - http://www.scopus.com/inward/record.url?scp=0033882386&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0033882386&origin=recordpage
U2 - 10.1109/4234.824757
DO - 10.1109/4234.824757
M3 - RGC 21 - Publication in refereed journal
SN - 1089-7798
VL - 4
SP - 62
EP - 64
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 2
ER -