wiki:Old/NodeHandler/Commands/antenna

Documentation | NodeHandler | Commands | antenna

antenna: Configure Noise Insertation and Spectrum Measurements

This command allows the experimenter to inject noise into the grid through the available antennas. While currently not supported, the same command will also provide access to spectrum analyzers.

Syntax

antenna(selector).signal.resource = value
antenna(selector).signal {}

  • selector: Expression to select the antenna set.
  • signal: Path to noise generator.
  • resource: Name of resource.
  • value: Value to assign to resource.

The supported syntax for the selector can be found in defNodes.

The current resources for the signal generator are:

  • bandwidth: Bandwidth of signal
  • channel: 802.11 channel
  • power: Output power in dbM ???
  • on: On when set to true, off when set to false

The locations of the antennas within the grid can be found missing.

Usage

antenna(4,4).signal {|s|
  s.bandwidth = 20
  s.channel = 36
  s.power = prop.noisePower
}

See Also

prop

Channel Mapping

Channels for IEEE 802.11a

Channel Identifier Frequency in MHz
34 5170
36 5180
38 5190
40 5200
42 5210
44 5220
46 5230
48 5240
52 5260
56 5280
60 5300
64 5320
149 5745
153 5765
157 5785
161 5805

Channels for IEEE 802.11b

Channel Identifier Frequency in MHz
1 2412
2 2417
3 2422
4 2427
5 2432
6 2437
7 2442
8 2447
9 2452
10 2457
11 2462
12 2467
13 2472
14 2484

Maximum Power Levels and Antenna Gains

IEEE 802.11a

An improper combination of power level and antenna gain can result in Effective Isotropic Radiated Power (EIRP) above the amount allowed per regulatory domain. The following table indicates the maximum power levels and antenna gains allowed for each IEEE 802.11a regulatory domain.

Regulatory Domain Maximum Power Level (mW) with 6-dBi Antenna Gain
Americas (-A)(160 mW EIRP maximum on channels 36-48, 800 mW EIRP maximum on channels 52-64) 40
Japan (-J) (10 mW/MHz EIRP maximum) 40
Singapore (-S) (100 mW EIRP maximum) 20
Taiwan (-T) (800 mW EIRP maximum) 40

IEEE 802.11b

An improper combination of power level and antenna gain can result in EIRP above the amount allowed per regulatory domain. The following table indicates the antenna gains and the maximum power levels in mW allowed for each IEEE 802.11b regulatory domain.

  • Americas (-A) (4 W EIRP maximum)
  • EMEA (-E) (100 mW EIRP maximum)
  • Israel (-I) (100 mW EIRP maximum)
  • China (-C) (10 mW EIRP maximum)
  • Japan (-J) (10 mW/MHz EIRP maximum)
Antenna Gain (dBi) -A-E-I-C-J
0 100100100550
2.21005050530
5.21003030n/a30
61003030n/a30
8.510055n/an/a
1210055n/an/a
13.510055n/a5
212011n/an/a

Last modified 14 years ago Last modified on May 27, 2006, 4:58:03 AM
Note: See TracWiki for help on using the wiki.