A Measure of the Girth Histogram for Improved Girth-Conditioning Construction of LDPC Codes |
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| Authors: | Chen H. Cao Z. |
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| Affiliation: | Dept. of Electron. Eng., Tsinghua Univ., Beijing; |
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| Abstract: | In this letter, we present a general quantitative measure of the girth histogram of low-density parity-check (LDPC) codes with joint consideration of the degrees and local girths of symbol nodes. We then propose a further girth-conditioning algorithm to optimize such a measure during the construction of LDPC codes. We show by simulation results that the algorithm improves not only the performance of irregular codes at high signal-to-noise ratios (SNR) considerably, but also the rates of regular codes |
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