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1. 空军工程大学航空航天工程学院,陕西 西安 710038
2. 西安电子科技大学综合业务网国家重点实验室,陕西 西安 710071
3. 解放军94626部队,福建 福州 350002
[ "孙康宁(1991-),男,山东淄博人,空军工程大学硕士生,主要研究方向为信道编码、光磁记录技术、抗干扰通信。" ]
[ "马林华(1965-),男,陕西汉中人,博士,空军工程大学教授、博士生导师,主要研究方向为抗干扰通信、信道编码、无线自组织网络。" ]
[ "茹乐(1978-),男,陕西西安人,博士,空军工程大学副教授、硕士生导师,主要研究方向为光磁记录技术、抗干扰通信。" ]
[ "范文同(1983-),男,江苏盐城人,博士,解放军94626部队助理工程师,主要研究方向为信道编码、协作通信、无线自组织网络。" ]
[ "胡星(1990-),男,河南南阳人,空军工程大学博士生,主要研究方向为模拟量编码、卫星通信。" ]
[ "黄绍城(1990-),男,广西贵港人,空军工程大学博士生,主要研究方向为无人机自组织网络。" ]
网络出版日期:2016-09,
纸质出版日期:2016-09-25
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孙康宁, 马林华, 茹乐, 等. 混合信道下LDPC码稳定条件分析及度序列优化[J]. 通信学报, 2016,37(9):168-174.
Kang-ning SUN, Lin-hua MA, Le RU, et al. Analysis of stability condition for LDPC codes and optimizing degree sequences over mixed channel[J]. Journal on communications, 2016, 37(9): 168-174.
孙康宁, 马林华, 茹乐, 等. 混合信道下LDPC码稳定条件分析及度序列优化[J]. 通信学报, 2016,37(9):168-174. DOI: 10.11959/j.issn.1000-436x.2016188.
Kang-ning SUN, Lin-hua MA, Le RU, et al. Analysis of stability condition for LDPC codes and optimizing degree sequences over mixed channel[J]. Journal on communications, 2016, 37(9): 168-174. DOI: 10.11959/j.issn.1000-436x.2016188.
在高斯噪声和随机删除同时存在的背景下,提出LDPC码度序列的稳定收敛条件,理论证明了高斯信道下阈值较高的度序列不适用于混合信道,并仿真验证了该结论。将随机粒子群算法和模拟退火算法相结合,不同删除概率下寻找到了一些高阈值混合信道的度序列,删除概率为40%时,度序列信噪比阈值最大可提高1.615 9 dB,适用于光记录、伴随窄带阻塞干扰的跳频通信等混合信道环境。
Under the circumstance that white Gaussian noise and random erasures exist all at once
the stability condition for LDPC codes over mixed channel was proposed.And it was proved that a good degree sequence of LDPC codes was not optimized over mixed channel.It can also be proved by simulation.The random particle swarm optimization (RPSO) and simulated annealing (SA) algorithm were combined to find some capacity-approaching degree sequences over mixed channel with different erasure probabilities.The threshold of signal-to-noise ratio improves 1.615 9 dB than that of the classical degree sequences calculated by Gaussian approximation over mixed channel.These degree sequences are optimal for optical recording and frequency-hopping communication with narrow-band interference.
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