An Improved Method for Identification of LDPC Codes Within a Candidate Set

The identification of low-density parity-check (LDPC) codes with higher rate over a candidate set is more difficult than that of LDPC encoders with lower rate. For the given soft information on a received sequence, we present a method to compute the average Taylor polynomial of the syndrome posterior probability according to the parity-checks of the candidates. Simulation results show that the proposed method performs as well as the existing works when dealing with lower rate encoders. Meanwhile, our method outperforms the existing works in higher rate encoders identification, with the gain being about 0.5 dB.

[1]  Zhaojun Wu,et al.  Blind Recognition of LDPC Codes Over Candidate Set , 2020, IEEE Communications Letters.

[2]  Rodrigue Imad,et al.  Theoretical analysis of a MAP based blind frame synchronizer , 2009, IEEE Transactions on Wireless Communications.

[3]  Rodrigue Imad,et al.  Blind frame synchronization for error correcting codes having a sparse parity check matrix , 2009, IEEE Transactions on Communications.

[4]  Erik G. Larsson,et al.  Fast Blind Recognition of Channel Codes , 2014, IEEE Transactions on Communications.

[5]  Mohamed Marey,et al.  A Novel Blind Block Timing and Frequency Synchronization Algorithm for Alamouti STBC , 2013, IEEE Communications Letters.

[6]  Robert G. Gallager,et al.  Low-density parity-check codes , 1962, IRE Trans. Inf. Theory.

[7]  Christophe Chabot.  Recognition of a code in a noisy environment , 2007, 2007 IEEE International Symposium on Information Theory.

[8]  Tian Xia,et al.  Blind Identification of Nonbinary LDPC Codes Using Average LLR of Syndrome a Posteriori Probability , 2013, IEEE Communications Letters.

[9]  Tian Xia,et al.  Joint Blind Frame Synchronization and Encoder Identification for Low-Density Parity-Check Codes , 2014, IEEE Communications Letters.

[10]  Kyeongcheol Yang,et al.  Adaptive Modulation and Coding Schemes Based on LDPC Codes with Irregular Modulation , 2010, IEEE Transactions on Communications.

[11]  Erik G. Larsson,et al.  A Fast Scheme for Blind Identification of Channel Codes , 2011, 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.

[12]  Tian Xia,et al.  Novel Blind Identification of LDPC Codes Using Average LLR of Syndrome a Posteriori Probability , 2012, IEEE Transactions on Signal Processing.

[13]  Mathieu Cluzeau,et al.  Block code reconstruction using iterative decoding techniques , 2006, 2006 IEEE International Symposium on Information Theory.

[14]  Jing Li,et al.  On Blind Recognition of Channel Codes Within a Candidate Set , 2016, IEEE Communications Letters.

[15]  Emanuel Radoi,et al.  Blind identification of code word length for non-binary error-correcting codes in noisy transmission , 2015, EURASIP J. Wirel. Commun. Netw..

[16]  Antoine Valembois,et al.  Detection and recognition of a binary linear code , 2001, Discret. Appl. Math..