AMC与HARQ相结合的跨层设计在D2D中继通信中的研究

Cross-layer Design Combing AMC with HARQ in Device-to-device Relay Communications

在蜂窝网络中引入终端直通(D2D)技术,能有效提升系统频谱效率。文中在研究了物理层自适应调制编码(AMC)策略与数据链路层自动请求重传(ARQ)技术相结合的跨层设计理论基础上,提出了D2D中继通信场景下AMC与HARQ相结合的跨层设计方案。仿真结果表明,采用AMC与HARQ相结合的跨层设计策略能显著提升D2D通信的频谱效率,增加D2D中继通信的吞吐量。

In cellular networks, the introduction of device-to-device （D2D） technology can effectively improve the system spectral efficiency. The joint design of adaptive modulation and coding（AMC） in physi- cal layer combined with automatic repeat request（ARQ） in data link layer is researched,and the scheme for cross-layer design combing AMC with HARQ is proposed in relay assisted D2D communications. Simulation results show that adopting AMC with HARQ scheme can improve spectral efficiency of D2D communication and increase the throughput of D2D relay link.