tailieunhanh - Mobile & Wireless Networking – Lecture 6: Cellular Systems UMTS LTE 2 - Geert Heijenk

Cellular Systems (UMTS / LTE) (2/2): UMTS High Speed Downlink Packet Access (HSDPA), UMTS High Speed Uplink Packet Access (HSUPA), Long Term Evolution. Other systems: IEEE WiMAX, DECT, TETRA, Satellite Systems.    | 262001 Mobile Wireless Networking Lecture 6 Cellular Systems UMTS I LTE 2 2 Other systems Reader Part 5 Optional Schiller Section 5 6 Geert Heijenk Mobile and Wireless Networking 2009 I 2010 Outline of Lecture 6 Cellular Systems UMTS LTE 2 2 UMTS High Speed Downlink Packet Access HSDPA UMTS High Speed Uplink Packet Access HSUPA Long Term Evolution Other systems IEeE WiMAX DECT TETRA Satellite Systems 2 Mobile and Wireless Networking 2009 2010 HSDPA The downlink Main improvements MAC-layer from RNC to base station Improved radio higher order modulation initially 16-QAM newer releases 64 QAM Techniques used Fast Adaptive Modulation Coding Fast Channel-Dependent Scheduling Fast Hybrid ARQ Result increases throughput Mbps reduces latency increases data capacity newer releases promise throughputs up to Mbps with MIMO 64-QAM and multiple carriers dual-cell Introduction 2006 in NL max Mbps 3 Mobile and Wireless Networking 2009 .