非对称物理层网络编码机制设计与理论分析

项目名称： 非对称物理层网络编码机制设计与理论分析

项目编号： No.61301115

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 陈智勇

作者单位： 上海交通大学

项目金额： 25万元

中文摘要： 物理层网络编码技术是提高时频资源复用度、提升网络容量的有效途径。现有的物理层网络编码研究较少考虑高阶调制下非对称传输和非理想接收等实际问题，阻碍其实际应用。针对以上问题，本项目拟研究基于分量码协同、用户比特协同、跨层协同的非对称物理层网络编码机制。具体概括为：（1）提出多级物理层网络编码机制，从星座图容量分析、分量码设计、星座标识映射设计、编译码级别顺序优化等角度揭示制约多级物理层网络编码性能的规律，阐明最优设计准则，分析其与基于比特交织编码调制的物理层网络编码的优劣；（2）探索将边信息融合于编码调制的物理层网络编码机制，利用边信息协同从根本上改变调制方式和码字构造，可望同时获取调制增益与编码增益；（3）开展MAC层的无速率码与PHY层的信道编码和网络编码的跨层协同设计，优化码字结构和译码架构，挖掘物理层网络编码的信道自适应能力。相关成果将为物理层网络编码技术在实际网络环境的应用提供参考。

中文关键词： 多级物理层网络编码；比特协同编码调制；物理层成型网络编码；无线双线中继；

英文摘要： Physical-Layer Network Coding (PLNC) has been regarded as an effective approach to improve the time and bandwidth efficiency and the network throughput. However, few existing PLNC schemes take into consideration the asymmetric traffic, the high-order modulation and the imperfect receivers. This project focuses on resolving several practical issues and proposes the asymmetric PLNC schemes based on the multi-level coding cooperation, the side information cooperation and the cross-layer cooperation. In summary, the main works of this project can be categorized as follows: (1) to design the multi-level PLNC (MPLNC) strategy. The constellation constrained capacity is derived for MPLNC. The design criteria for the proposed MPLNC scheme is investigated, includeing the rules of the rate design, the decoding/encoding order and the labeling strategy design. Moreover, we analysis and compare the performance of the MPLNC scheme with that of the bit-interleaved coded modulation (BICM)-based PLNC scheme. (2) to propose the bit-cooperative coded modulation relaying strategy with the side information in the encoding/decoding and modulation/demodulation. The proposed constellation mapping is a many-to-one function and can be considered as a new form of network coding operation. The joint coding-modulation design with PLNC intro

英文关键词： Multi-Level Physical-Layer Network Coding f；Bit-Cooperative Coded Modulation；Physical-Layer Shaping Network Coding；Wireless Two-Way Relay；