Method For Puncturing An LDPC Channel Code

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Date
2/2/2010Author
Ha, Jeong-seok
Mclaughlin, Steven W.
Kim, Jaehong
Suh, Seung-bum
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A method for puncturing a low density parity check (LDPC) code that is decoded through a parity check matrix expressed by a factor graph including check nodes and bit nodes connected to the check nodes through edges. The method includes classifying the bit nodes mapped to a parity part of a codeword into hierarchical groups according to their decoding facilities when the bit nodes are punctured, determining puncturing order of the groups, and sequentially performing puncturing on the bit nodes from a bit node belonging to a corresponding group according to the puncturing order of the groups to acquire a codeword with a desired coding rate.
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- Georgia Tech Patents [1761]