Abstract: Since Turbo code has parallel concatenated features, easier to design with the joint network coding, so far it is a hotspot of channel coding and network coding joint design. A new scheme of joint design of network coding and channel coding based on studying physical layer’s networking coding in wireless network is proposed, that is the joint design of Convolutional Turbo Code（CTC） and network coding. This scheme has smaller decoding delay, stronger error correction performance, and for Mobile Station（MS）, not only improves the rate, but also is simpler than direct application of the CTC encoding algorithm. This scheme’s simulation result shows that CTC-network coding system has stronger error correction performance and is more suitable for harsh communication environment.

Key words: communication and information system, Convolutional Turbo Code（CTC）, Turbo；network coding, channel coding, relay

摘要： Turbo码由于具有并行级联的特点，更易于与网络编码进行联合设计，迄今为止成为信道编码与网络编码联合设计领域的一个热点。在研究无线网络中物理层网络编码技术的基础上，提出了一种新型的物理层网络编码和信道编码的联合设计方案，即CTC码（卷积Turbo码）与网络编码的联合设计方案，该方案具有较小的译码时延，更强的纠错性能，对于移动台（MS）来说，不仅提高了码率，还比MS直接使用CTC编码的算法简单。仿真结果表明CTC-网络编码系统具有较强的纠错性能，更适合于各种恶劣环境下的通信。

关键词: 通信与信息系统, 卷积Turbo码, Turbo码, 网络编码, 信道编码, 中继