Turbo编码调制技术在物理层网络编码中的应用研究  

Research of the application of Turbo coded modulation scheme in physical network coding

作　　者：雷明然 李鹤[1] 李琦[1] 

机构地区：[1]河北工业大学信息工程学院,天津300401

出　　处：《电子设计工程》2014年第16期135-138,143,共5页Electronic Design Engineering

基　　金：河北省自然科学基金资助项目(F2012202116)

摘　　要：在双向中继信道中,基于编码调制技术提出了一种Turbo编码调制技术(T-TCM)与物理层网络编码的联合实施方案。本方案采用了T-TCM,即将TCM中的卷积码用Turbo码代替,两个分量编码器用符号交织器分开。中继节点利用卷积码和网络编码的线性性质直接估计网络编码的码字,并在中继节点采用了基于符号的MAP译码算法。本方案将信道编码技术、调制技术以及物理层网络编码三者联合设计,不仅增加了无线网络的吞吐量,还提高了网络的频谱利用率。A new scheme of joint Turbo Coded Modulation T-TCM and Physical Layer Network Coding （PNC）is proposed which based on Coded Modulation in the two-way relay channel. With the adoption of T-TCM, the convolution code in the TCM scheme is instead by the Turbo codes, the two encoders are separated by symbol interleaving. In the relay node, the proposed scheme takes advantage of the linearity of convolution code and network coding, so that digital bits of network coding can be estimated directly, and MAP decoding Algorithm is used in this scheme. The proposed scheme considers the problem of joint design of channel coding, modulation and PNC, so that the system throughout is increased, the spectrum efficiency is improved also.

关 键 词：TURBO编码调制 物理层网络编码 信道编码 联合设计 

分 类 号：TN925[电子电信—通信与信息系统]