TD- LTE各种上下行配置的性能比较

TD- LTE是我国拥有核心自主知识产权的下一代无线通信技术标准,共有7种不同的上下行配置,以灵活支持不同的上下行业务需求.通过研究不同上下行配置对应的各种时序,得出不同上下行配置对上下行时延的影响.通过分析在不同上下行配置下信道质量反馈、上行探测信号、混合自适应重传等技术的配置,研究了不同上下行配置对上下行吞吐量及频...

Comparison of Different UL-DL Configurations of TD-LTE

TD-LTE(Time Duplex Long Term Evolution) is the next generation of w ireless communication standard, on which China has independent kernel intellectu al property rights. It defines 7 different UL-DL(Uplink Downlink) configuration s to flexibly support different traffic requirements in uplink and downlink. By s tudying the timing of different UL-DL configurations, the impact of different UL -DL configurations on the UL and DL delay is given. The impacts on the throughpu t and spectral efficiency of different UL-DL configurations are also proposed by analysing the configuration of channel quality feedback, sounding reference sig nal transmission and hybrid transmission of different UL-DL configurations.The a nalysis result is verified by syst em level simulation and the actual delay, th roughput and spectral efficiency of different UL-DL configurations are given, wh ich provid es a reference for the selection of UL-DL configuration under specific traffic and networking requirements.