| 低密度格形码译码算法高效实现方法 |
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| 引用本文： | 王晓松,常桂然,宁宣杰.低密度格形码译码算法高效实现方法[J].东北大学学报(自然科学版),2009,30(10):1406-1408. |
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| 作者姓名： | 王晓松 常桂然 宁宣杰 |
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| 作者单位： | 东北大学,信息科学与工程学院,辽宁,沈阳,110004 |
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| 摘 要： | 对低密度格形码(low density lattice codes,LDLC)及其译码算法进行了介绍.针对在LDLC译码中,校验节点消息的卷积、伸缩和周期化扩展最耗时的问题,结合数字信号处理的相关技术,提出了一种LDLC译码的高效实现方案.仿真结果验证了LDLC优良的性能,并表明使用所提出的方案,每次迭代时间可以有效减少.
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| 关 键 词： | 低密度格形码 低密度奇偶校验码 迭代译码 快速傅立叶变换 |
Efficient Implementation of Decoding Algorithm of Low Density Lattice Codes |
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| WANG Xiao-song,CHANG Gui-ran,NING Xuan-jie.Efficient Implementation of Decoding Algorithm of Low Density Lattice Codes[J].Journal of Northeastern University(Natural Science),2009,30(10):1406-1408. |
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| Authors: | WANG Xiao-song CHANG Gui-ran NING Xuan-jie |
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| Institution: | (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China |
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| Abstract: | The low density lattice codes (LDLC) and its decoding algorithm were described. For the most time-wasted steps, such as convolution, stretching and periodic expansion, an efficient implementation scheme was designed and came into effect in combination with the relevant technique of digital signal processing. Simulation results verified the excellent performance of LDLC and showed that the proposed scheme was available to shorten effectively the time for each iteration step in decoding. |
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