Research And Implementation On System-level Test Platform For Physical Layer Downlink In TD-LTE-A System

In the competitive environment of the rapid development of global mobile communications and WiMAX%WiFi and other mobile broadband wireless access technology, The3GPP Standardization Organization was proposed TD-LTE-Advanced technology standard on the basis of Long Term Evolution(LTE) technology. In the LTE-Advanced technology standards, TD-LTE-A is currently the major world carriers are keen on the technical standards.Therefore, TD-LTE-A system related product development is the hot spot of the current major communication development companies.The conbination of topics in this article in the Shanghai Municipal Science and Technology Commission technological breakthroughs research and development of "TD-LTE-A key technology research and TD-LTE-A signal analyzer", TD-LTE-A technical standards for the physical layer downlink related technologies Analysis,And based on SystemVue2012platform design physical layer downlink test simulation system.This system is the development of TD-LTE-A physical layer data test and simulation diagram, And you can import a self-developed algorithm simulation and test.The system signal production data transparency of the process,and further the development cycle of the project.This paper first describes the significance of LTE technology background and research significance, and described the research and developments of this technology at domestic and international. Followed by the analysis of the physical layer downlink of TD-LTE-A system, mainly physical layer technology, as well as its key technologies in-depth analysis and research, analytical description of the physical layer in the downlink in the system protocol specifications. At last,the downlink single link, the sender, and the downlink system to achieve the physical layer in the Agilent SystemVue2012data test simulation link design, and rationality of the design is verified through simulation, mainly in the different signal-to-noise ratio under the condition of the different channel models and systems modulation simulation, and analyze the variation of the BLER and Throughput performance of the system.