Design of Decomposable-Rate-Compatible LDPC Codes and HARQ Scheme

Shen Jin-qi; Xu You-yun; Yu Hui; Gan Xiao-ying

doi:10.3724/SP.J.1146.2008.00047

Volume 31 Issue 4

Dec. 2010

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Article Navigation > Journal of Electronics & Information Technology > 2009 > 31(4): 882-884

Shen Jin-qi, Xu You-yun, Yu Hui, Gan Xiao-ying. Design of Decomposable-Rate-Compatible LDPC Codes and HARQ Scheme[J]. Journal of Electronics & Information Technology, 2009, 31(4): 882-884. doi: 10.3724/SP.J.1146.2008.00047

Citation:

Shen Jin-qi, Xu You-yun, Yu Hui, Gan Xiao-ying. Design of Decomposable-Rate-Compatible LDPC Codes and HARQ Scheme[J]. Journal of Electronics & Information Technology, 2009, 31(4): 882-884. doi: 10.3724/SP.J.1146.2008.00047

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Design of Decomposable-Rate-Compatible LDPC Codes and HARQ Scheme

doi: 10.3724/SP.J.1146.2008.00047

Received Date: 2008-01-11
Rev Recd Date: 2008-06-10
Publish Date: 2009-04-19

Abstract

Abstract

A novel method is proposed to construct Decomposable-Rate-Compatible LDPC (D-RC-LDPC) codes. The H matrix of a high rate LDPC codes constructed by this method contains a series of LDPC codes with low rate. The low rate codes can be encoded and decoded respectively which make the system more flexible. A new HARQ scheme based on D-RC-LDPC is also proposed, which is called DB-HARQ (D-RC-LDPC Based HARQ). It can transmit more information through re-transmit scheme and improve the performance of Error Correction Code (ECC) by lowering rate of the ECC. The scheme can improve the FER and throughput performance with 1.5 dB compared with normal ARQ scheme when the code length of is about 2000 and the code rate is 1/2 to 2/3.

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References(1)

References

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