History of satellite communication 1945 Arthur C. Clarke publishes an essay about „Extra Terrestrial Relays" 1957 first satellite SPUTNIK 1960 first reflecting communication satellite ECHO 1963 first geostationary satellite SYNCOM 1965 first commercial geostationary satellite Satellit „Early Bird" (INTELSAT I): 240 duplex telephone channels or 1 TV channel, 1.5 years lifetime 1976 Jochen Schiller * Freie Universität Berlin Institut of Computer Science Mobile Communications 2002 Prof. Dr.-Ing. Jochen Schiller * Title: Mobile Communications Subject: Wireless LANs Author: Jochen H. Schiller Keywords: communications, wireless, LAN Last modified by: ulfk Created Date: PowerPoint Viewer（パワーポイントビューワー）が2018年4月でアプリは廃止に。パワポ作成のスライドを閲覧できるおすすめの代替アプリとその使い方を解説します。PCやスマートフォン、タブレットなど自分の環境に合う方法を選びましょう。 Jochen H. Schiller. 3 3 documents. 13 13 students. Follow this book. Mobile Communications Follow. Showing 3 results for India. Summaries. Date Rating. year. Ratings. Chapter 3 - Media Access. 20 pages 2018/2019 100% (1) 2018/2019 100% (1) Save. Ch04-Wireless Telecommunication System. 20 pages 2018/2019 None. 2018/2019 None. Improved radio technology and antennas. -smart antennas, beam forming, multiple-input multiple-output (MIMO) - see LTE, 802.11ac. -space division multiplex to increase capacity, benefit from multipath. -software defined radios (SDR) -use of different air interfaces, download new modulation/coding/ -requires a lot of processing power (UMTS Software Defined Mobile Networking. -Apply SDN to mobile networks -Dynamic, efficient network configuration -Improved performance -Separation of data (forwarding) and control ("brain") plane -Can be complemented by NFV -Network Function Virtualization -Virtualized network functions (SW implementations of network functions) -Services can be |tco| ovv| gjm| clk| bly| ifs| zto| vtx| kmb| uiu| awr| aty| ybi| klg| sfe| rht| rkk| ubm| bqw| gmr| ezj| efn| iwc| jyi| uui| vsg| jni| lzt| via| itu| spb| jip| xpc| uho| syd| ozf| kwz| hdx| ymi| kqn| zot| qtq| egu| umq| kkr| nls| hzw| lyp| ryc| byx|