Infinet Wireless: Technical Documentation
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Automatic modulation and transmit power control

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titleAMC and ATPC settings description
ParameterDescription
AMC strategy

There are following AMC strategies available:

  • Normal - represents a balance between the error rate and throughput values.
  • Conservative - assumes using higher CINR thresholds in order to minimize the error rate.
  • Agressive - lowers the thresholds in order to use higher modulation levels and thus increase the throughput.
  • Disabled - disables automatic modulation control.
Automatic transmit power control

ATPC allows to control transmitter output power automatically based on target RSSI value. If actual RSSI level is lower then unit increases transmitter output power of the remote unit and vice versa. ATPC could not set value that may exceed the "Power limit" value.

  • The Master unit manages the transmit power of Slave unit.
  • The Slave unit manages the transmit power of Master unit.
Target RSSIRSSI value which will be used by ATPC as target.
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titleFigure - AMC and ATPC settings

Frequency channel grids

Each available channel width is connected with appropriate channel grid. Grid is used for automatic center frequency selection function and contains a list of frequencies that may be selected. In the example below you may see that wireless unit with enabled "Automatic center frequency selection" may change center frequency to the following values (MHz): 5100, 5120, 5140, 5300, 5390, 5410.

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5100-5140/20, 5300, 5390-5410/20

Each element of list may be set as follows:

  • 5300 - exact value;
    • 5100-5140/20, 5390-5410/20 - range of values with 20 MHz step

    The frequency grid allows to limit the scan range in case the center frequency is automatically selected. Also Instant DFS will use these restrictions when monitoring the noise situation. Narrow grid of available frequencies speeds up scanning and link establishing process. Manual center frequency selection will also be limited to the values indicated in the grid.

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    titleFigure - Frequency channel grids

    Image RemovedRadio - grid.pngImage Added