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一种适于实时语音纠错编码的LDPC码

Low-density Parity Check Code for Error Correcting in Real-time Voice Transmission
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摘要 设计了一种适于对声码器输出码流进行前向纠错编码的半规则化低密度奇偶校验码(LD-PC码)。该低密度奇偶校验码具有编、译码简单,存储量少,易于硬件实现等特点。同时对汉明码、卷积码、低密度奇偶校验码在AWGN信道下的传输性能进行了仿真比较。结果表明,长度适合的LDPC码误码性能超过汉明码、卷积码。 A new encoding structure for LDPC codes was proposed as the error-correcting code in real-time voice transmission. Those codes offer many advantages, such as simplicity in encoding structure, less memory requirement, easy encoding/decoding, and convenience in implementation in circuit. Besides, the performances of Hamming code, convolutional code, and LDPC code in AWGN channel were simulated. Simulation results indicated that the LDPC code outperformed the other two.
作者 乔国垒 郑宏婕
机构地区 淮海工学院电子工程学院
出处 《淮海工学院学报（自然科学版）》 CAS 2009年第4期30-33,共4页 Journal of Huaihai Institute of Technology:Natural Sciences Edition
基金 江苏省重大科技支撑与自主创新专项基金资助项目(BY2009131)
关键词 语音传输 LDPC码 纠错编码 voice transmission LDPC code error-correcting code
分类号 TN911 [电子电信—通信与信息系统]
  • 相关文献

参考文献8

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二级参考文献8

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淮海工学院学报（自然科学版）
2009年 第4期

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