Changes between Version 156 and Version 157 of WiMAXInteg
- Timestamp:
- 04/13/10 16:08:10 (14 years ago)
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WiMAXInteg
v156 v157 278 278 === 6.2 Base Station Hardware === 279 279 280 The 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]] 283 284 Installation of the BTS base station hardware is described in [ manual][[BR]] 285 286 280 287 Fig 1-2b) NEC BTS IDU and ODU Base Station Hardware [[BR]] 281 288 [[Image(Visio-111309b_WiMAXSystemOverview_Page_3.jpg, 90%)]] [[BR]] … … 283 290 === 6.3 WiMAX Antenna === 284 291 285 There are t wotypes of 2.6GHz WiMAX antennas that may be installed at the site: [[BR]]292 There are three types of 2.6GHz WiMAX antennas that may be installed at the site: [[BR]] 286 293 * 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]] 296 297 Each campus should decide on the appropriate antenna (or antennas); see Section xx below. [[BR]] 293 298 294 299 The 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]] 302 303 Typical 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]] 297 308 298 309 Note that the loss in the cable can have a significant impact on range. [[BR]] 299 310 300 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]] 311 It should be possible to include two (or more) antennas, and move the coax cable between antennas to select the antenna in use. [[BR]] 305 312 306 313