TY - GEN
T1 - The improved Turbo-decoding Message-passing algorithm and corresponding decoder for LDPC based on LTE
AU - Lao, Lingling
AU - Li, Lixin
AU - Zhu, Meng
AU - Zhang, Huisheng
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/12/15
Y1 - 2014/12/15
N2 - The Turbo-decoding Message-passing (TDMP) algorithm of Low-Density Parity-Check (LDPC) codes has a faster convergence speed, lower hardware implementation complexity, and less storage units than the Belief-Passing (BP) algorithms. However, because of the integer quantization operations for initial information, restriction of storage units will cause the problem of decoding information overflowing. This paper gives the reason of overflow errors, proposes the improved decoding algorithm which can partially eliminate overflow errors, and designs the corresponding decoder which only requires some extra subtractors and shift operations. We analyze the computation complexity and compute decoder throughput. Finally, we simulate the error performances of the LDPC codes over the LTE channel, and simulation results show that the proposed algorithm effectively suppresses the overflow errors with a low decoder complexity and a high throughput.
AB - The Turbo-decoding Message-passing (TDMP) algorithm of Low-Density Parity-Check (LDPC) codes has a faster convergence speed, lower hardware implementation complexity, and less storage units than the Belief-Passing (BP) algorithms. However, because of the integer quantization operations for initial information, restriction of storage units will cause the problem of decoding information overflowing. This paper gives the reason of overflow errors, proposes the improved decoding algorithm which can partially eliminate overflow errors, and designs the corresponding decoder which only requires some extra subtractors and shift operations. We analyze the computation complexity and compute decoder throughput. Finally, we simulate the error performances of the LDPC codes over the LTE channel, and simulation results show that the proposed algorithm effectively suppresses the overflow errors with a low decoder complexity and a high throughput.
KW - decoder architecture
KW - Low-Density Parity-Check (LDPC)
KW - Turbo-decoding Message-passing (TDMP)
UR - https://www.scopus.com/pages/publications/84922609710
U2 - 10.1109/ICSPCC.2014.6986326
DO - 10.1109/ICSPCC.2014.6986326
M3 - 会议稿件
AN - SCOPUS:84922609710
T3 - 2014 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2014
SP - 890
EP - 894
BT - 2014 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2014
Y2 - 5 August 2014 through 8 August 2014
ER -