LTE物理层综合介绍

BACKGROUND LTE GENERAL ARCHITECTURE THESIS OBJECTIVE AND MOTIVATION LITERATURE REVIEW LTE PHYSICAL LAYER CHARACTERISBiblioteka BaiduICS PERFORMANCE STUDY APPROACH SIMULATION RESULTS AND ANALYSIS SUMMARY AND CONCLUSION
Outline
• Background • LTE General Architecture • Thesis Objective and Motivation • Literature Review • LTE Physical Layer Characteristics • Performance Study Approach • Simulation Results and Analysis • Summary and Conclusion
QAM) • Multiple Antenna Techniques
– Transmit Diversity – Single User MIMO – Multi User MIMO – Close-Loop rank1 precoding – dedicated beam forming
• System Bandwidth from 1.4 MHz to 20MHz (1.4, 3, 5, 10, 15, 20)
•E-UTRAN (EUTRA Node) -> LTE •EPC (Evolved Packet Core) -> SAE
User Plane and Control Plane Protocol Stacks
BACKGROUND LTE GENERAL ARCHITECTURE THESIS OBJECTIVE AND MOTIVATION LITERATURE REVIEW LTE PHYSICAL LAYER CHARACTERISTICS PERFORMANCE STUDY APPROACH SIMULATION RESULTS AND ANALYSIS SUMMARY AND CONCLUSION
•Satisfy IMT-Advanced Requirements : 100 Mbps in high mobility (300 km/h) and 1 Gbps in low mobility (3 km/h), less than 5ms Data Latency, …
LTE Release8 General Features
A Comprehensive Analysis Of LTE Physical Layer
Master of Science Thesis Fahimeh Rezaei
Supervisor: Dr.Hamid Sharif-Kashani, Dr. Michael Hempel Department of Computer and Electronics Engineering University of Nebraska-Lincoln December, 1st 2010
Background
•Standard developers: 3GPP, IEEE, and 3GPP2 •3rd Generation Standards:
•Long Term Evolution (LTE Release8) •802.16e (WiMAX), 802.16m •UMB
•4th Generation standards
• Packet Switched Network • OFDM in Downlink and SC-FDMA in Uplink • Duplex Schemes: TDD and FDD • Adoptive Modulation and Coding scheme (QPSK, 16-QAM, 64-
General Architecture
▪Long Term Evolution associated with radio access technology ▪System Architecture Evolution (SAE) associated with the core network •LTE architecture-EPS:
– Different antenna diversity modes – Different modulation schemes and code rates – Include both FDD and TDD operations – Include all channel bandwidths
Thesis Objective and Motivations, cnt.
• Provide the right approach for evaluation of physical layer performance • Provide a performance study that includes all possible scenarios which is addresses by
Thesis Objective and Motivations
• Are these values accurate or even correct? • Is the right approach used for getting proposed values and results? • In which conditions and scenarios presented values and results are valid?
BACKGROUND
LTE GENERAL ARCHITECTURE THESIS OBJECTIVE AND MOTIVATION LITERATURE REVIEW LTE PHYSICAL LAYER CHARACTERISTICS PERFORMANCE STUDY APPROACH SIMULATION RESULTS AND ANALYSIS SUMMARY AND CONCLUSION