| 摘要: |
| 信号不同步是物理层网络编码研究中的热点，为了提高系统的信道容量和鲁棒性，针对异步通信条件下误码率高的难题，提出一种物理层网络编码与卷积信道编码相融合的无线通信方案.首先将置信传播算法引入到中继节点编码中，然后将信道译码和物理层网络编码联合起来，减少异步通信带来的不利影响，最后采用仿真实验测试其有效性和优越性.仿真实验结果表明，相对于其它编码方案，物理层网络编码与卷积信道编码方案不仅降低了数据传输的误码率，提高了系统通信的可靠性和信息传输速率，而且增强了系统对相位偏移和符号偏移的鲁棒性，具有更高的实际应用价值. |
| 关键词: 物理层网络编码 卷积编码 置信传播算法 联合设计 |
| DOI： |
| 分类号:TN911 |
| 基金项目:河南省教育厅科学技术研究重点项目(15A520117) |
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| Wireless commuting based on physical-layer network coding and convolution channel coding |
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Cui Zhongyuan, Wang Huadong
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School of Computer Science and Technology, Zhoukou Normal University, Zhoukou 466001, China
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| Abstract: |
| Signal synchronization problem is a hot research of physical layer network coding, in order to improve the channel capacity of the system and robustness, in view of high error rate problem in asynchronous communication, a wireless commuting method was put forward that based on physical-layer network coding and convolution channel coding. Firstly, belief propagation algorithm was introduced to the relay node coding, and then the convolution channel decoding and physical layer network coding were used to solve the adverse effects caused by asynchronous communication, finally, the simulation experiments were carried out to test its validity and superiority. The simulation results indicated, compared with other coding methods, the method not only reduces the error rate of data transmission enhances the system reliability of communication and information transmission rate, but also enhances the system robustness to phase offset and symbol offset, and has higher practical application value. |
| Key words: physical layer network coding convolution coding belief propagation algorithm joint design |
