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易利信 WiMAX Air Interface 系統設計課程 講議分享 |
課程內容:Introduction to WiMAX Air Interface 課程主持人:Dr. S.-H. Shawn Tsai Radio Access Concepts & Standards Business Unit Access, Ericsson AB 375p, 4.2 MB, 6 RDB Course Outline ◆Design Approach # OFDM fundamentals, Philosophy and Reasons behind theDesign Choices ◆Down Link Channel Structure # Overhead Channels (Preamble, Frame Control Header, DL-MAP), Subcarrier Allocation, Traffic Channels, DL MIMO/AAS ◆ Up Link Channel Structure # Overhead Channels, Subcarrier allocation, Traffic Channels, UL MIMO/AAS ◆ Forward Error Correcting Codes ◆ Physical-layer Hybrid-ARQ ◆ Rate Control; Channel Quality Feedback, Adaptive Modulation and Coding ◆ Channel Sensitive Scheduling ◆ Medium Access Control Techniques: # Down Link (DL): Methodology for Scheduling Transmission Time Slot and the Subcarrier Frequency # Up Link (RL): Flexible MAC via Five Mechanisms: Unsolicited Grant, Real-time Polling, Extended Real-Time Polling, Non-real-time Polling and Best Effort # Network Entry and Handover Process: Scanning, Initial/Periodic Ranging and Association, Hard Handover ◆ Other Features ◆ Performance
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