TY - GEN
T1 - On finite precision implementation of low density parity check codes decoder
AU - Zhang, Tong
AU - Wang, Zhongfeng
AU - Parhi, Keshab K.
PY - 2001
Y1 - 2001
N2 - In this paper, we analyze the finite precision effects on the decoding performance of Gallager's low density parity check (LDPC) codes and develop optimal finite word lengths of variables as far as the tradeoffs between the performance and hardware complexity are concerned. We have found that 4 bits and 6 bits are adequate for representing the received data and extrinsic information, respectively. Simulation results indicate that the quantization scheme we have developed for the LDPC decoder is effective in approximating the infinite precision implementation.
AB - In this paper, we analyze the finite precision effects on the decoding performance of Gallager's low density parity check (LDPC) codes and develop optimal finite word lengths of variables as far as the tradeoffs between the performance and hardware complexity are concerned. We have found that 4 bits and 6 bits are adequate for representing the received data and extrinsic information, respectively. Simulation results indicate that the quantization scheme we have developed for the LDPC decoder is effective in approximating the infinite precision implementation.
UR - http://www.scopus.com/inward/record.url?scp=84888027132&partnerID=8YFLogxK
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U2 - 10.1109/ISCAS.2001.922207
DO - 10.1109/ISCAS.2001.922207
M3 - Conference contribution
AN - SCOPUS:84888027132
SN - 0780366859
SN - 9780780366855
T3 - ISCAS 2001 - 2001 IEEE International Symposium on Circuits and Systems, Conference Proceedings
SP - 202
EP - 205
BT - ISCAS 2001 - 2001 IEEE International Symposium on Circuits and Systems, Conference Proceedings
T2 - 2001 IEEE International Symposium on Circuits and Systems, ISCAS 2001
Y2 - 6 May 2001 through 9 May 2001
ER -