Protograph-based q-ary LDPC codes for higher-order modulation
Protograph-based q-ary LDPC codes for higher-order modulation
复制标题
用于高阶调制的基于原图的 q 元 LDPC 码
DOI:
10.1109/istc.2010.5613806
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
R. Wesel
中科院分区:
文献类型:
--
作者:
A. Marinoni;P. Savazzi;R. Wesel
This paper introduces a protograph-based method for designing q-ary LDPC codes for use with modulations larger than QPSK. Simulations focus on a GF(16), 16-QAM example. The proposed construction method achieves the maximum gain when the average column weight is chosen so that the linear minimum distance growth property is satisfied. In this region, the benefit of a protograph-based design over a standard PEG approach was 0.3 dB. We found that a careful field-element selection algorithm provides about 0.1 dB of improvement over random field-element selection. Overall, the proposed improvements yielded 0.4 dB of gain over a PEG-based GF(16) code with randomly selected Galois field elements. The performance of this baseline GF(16) code was comparable to the best known binary LDPC code for 16-QAM, so that the proposed improvements allow the GF(16) LDPC code to outperform known binary approaches.
DOI:
10.1049/ip-com:20050230
发表时间:
2005-12-01
期刊:
IEE PROCEEDINGS-COMMUNICATIONS
影响因子:
--
作者:
Rathi, V;Urbanke, R
通讯作者:
Urbanke, R
影响因子:
2.5
作者:
Richardson, TJ;Urbanke, RL
通讯作者:
Urbanke, RL