基于单载波宽带物理层网络编码的中继策略与资源优化研究

项目名称： 基于单载波宽带物理层网络编码的中继策略与资源优化研究

项目编号： No.61271223

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 朱宇

作者单位： 复旦大学

项目金额： 76万元

中文摘要： 基于物理层网络编码的双向中继技术因其能显著提升无线网络的频谱利用率而受到国内外广泛关注。宽带双向中继网络采用OFDM来对抗因传输宽带增加而产生的信道频率选择性，但是OFDM固有的信号高峰均功率比和对载波频偏高敏感度的问题也对多跳网络端到端的传输性能产生了新的不利影响。单载波宽带传输技术的引入可有效解决OFDM双向中继中的这些不足。在本项目研究中，我们将单载波宽带传输技术与物理层网络编码相结合，提出了基于单载波宽带物理层网络编码的双向中继策略。我们还将研究以最优化网络性能为目标的资源优化问题，并研究在多用户SC-FDMA 双向中继网络中的用户调度与子载波分配问题。我们将通过理论分析和计算机仿真来验证提出的中继策略和资源分配算法的有效性，并搭建基于通用软件无线电外设（USRP）的单载波宽带双向中继网络实验环境，进行实际无线通信环境下的算法测试、验证和改进。

中文关键词： 双向中继；宽带物理层网络编码；单载波频域均衡；单载波频分多址；

英文摘要： Two way relay with physical layer network coding has recently received much attention due to its remarkable ability of increasing the network spectrum efficiency. Broadband two way relay networks normally adopt OFDM to deal with the frequency selective fading effect, but its inherent disadvantages of high peak to average ratio and high sensitivity to carrier frequency offset decrease the end-to-end transmission performance. Single carrier transmission can effectively deal with these problems in OFDM two way relay networks. In this project, we combine single carrier frequency domain equalization and physical layer network coding, and propose new relay strategies for single carrier broadband two way relay networks. We also investigate the resource allocation for optimizing the network performance, as well as the user scheduling and sub-carrier allocation in multiuser single carrier frequency division multiple access two way relay networks. We evaluate the performance and improvement of the proposed strategies and recourse allocation algorithms not only from theoretical analyses and computer simulations, but also from the implementation in real wireless relay networks developed on universal software radio peripherals.

英文关键词： two way relay；broadband physical layer network coding；single carrier frequency domain equalization；SC-FDMA；