Changes between Version 156 and Version 157 of WiMAXInteg


Ignore:
Timestamp:
04/13/10 16:08:10 (11 years ago)
Author:
hmussman@bbn.com
Comment:

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  • WiMAXInteg

    v156 v157  
    278278=== 6.2  Base Station Hardware  ===
    279279
     280The NEC BTS base station hardware includes the following units, connected via a dual fiber cable:[[BR]]
     281 *  InDoor Unit (IDU), rack mounted in an equipment room.[[BR]]
     282 *  OutDoor Unit (ODU), bolted to a pole near the antenna, and connected to the antenna via a coax.[[BR]]
     283 
     284Installation of the BTS base station hardware is described in [     manual][[BR]]
     285
     286
    280287Fig 1-2b)  NEC BTS IDU and ODU Base Station Hardware  [[BR]]
    281288[[Image(Visio-111309b_WiMAXSystemOverview_Page_3.jpg, 90%)]]  [[BR]]
     
    283290=== 6.3  WiMAX Antenna ===
    284291
    285 There are two types of 2.6GHz WiMAX antennas that may be installed at the site: [[BR]]
     292There are three types of 2.6GHz WiMAX antennas that may be installed at the site: [[BR]]
    286293 *  NEC 120-degree sector antenna, provided by Rutgers as part of the kit [[BR]]
    287  *  Commercial 360-degree omni-directional antenna, not provided by Rutgers as part of the kit [[BR]]
    288 
    289 See:[[BR]]
    290  *  [http://www.wpsantennas.com/zdaqj2600-10-clear-sprint-xohm-wimax-omni-directional-antenna.aspx  2.6GHz WiMAX 360-degree omni-directional antenna] [[BR]]
    291 
    292 Each campus should decide on the appropriate antenna;  see Section xx below. [[BR]]
     294 *  [http://www.wpsantennas.com/zdaqj2600-10-clear-sprint-xohm-wimax-omni-directional-antenna.aspx  Commercial 2.6GHz 360-degree omni-directional pole antenna], not provided by Rutgers as part of the kit [[BR]]
     295 *  [http://www.l-com.com/item.aspx?id=20419  Commercial 2.6GHz 30-dgeree directional patch antenna], not provided by Rutgers as part of the kit  (UNDER STUDY) [[BR]]
     296
     297Each campus should decide on the appropriate antenna (or antennas);  see Section xx below. [[BR]]
    293298
    294299The antenna must be connected to the NEC ODU using a short length of low-loss cable, with N-type connectors: [[BR]]
    295  *  LMR-400 up to 6 ft. [[BR]]
    296  *  LMR-600 greater than 6 ft. [[BR]]
     300 *  [http://www.l-com.com/productfamily.aspx?id=6499 LMR-400-series cables with N-type connectors], with 0.68 dB loss for 10 feet [[BR]]
     301 *  [http://www.l-com.com/productfamily.aspx?id=6517 LMR-600-series cables with N-type connectors], with 0.44 dB loss for 10 feet;  recommended for long runs [[BR]]
     302 
     303Typical cable components:[[BR]]
     304 *  [http://www.l-com.com/item.aspx?id=22733  N-male to N-male cable], 2 feet in length.[[BR]]
     305 *  [http://www.l-com.com/item.aspx?id=26015  N-male to N-male cable], 4 feet in length.[[BR]]
     306 *  [http://www.l-com.com/item.aspx?id=22734  N-male to N-male cable], 10 feet in length.[[BR]]
     307 *  [http://www.l-com.com/item.aspx?id=5261  N-female to N-female connector], to join two cables with N-male connectors.  [[BR]]
    297308 
    298309Note that the loss in the cable can have a significant impact on range. [[BR]]
    299310
    300 See: [[BR]]
    301  * [http://www.l-com.com/productfamily.aspx?id=6499 400-series cables with N-type connectors]  [[BR]]
    302  * [http://www.l-com.com/productfamily.aspx?id=6517 600-series cables with N-type connectors] [[BR]]
    303 
    304 It may be possible to include two antennas, with a manual or electronically-controlled coaxial switch.  UNDER STUDY [[BR]]
     311It should be possible to include two (or more) antennas, and move the coax cable between antennas to select the antenna in use.  [[BR]]
    305312
    306313