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• User-defined radius option allows you to enter the maximum radius directly (See Annex A13.1.1);

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• Noise-limited network option will calculate the coverage radius, based on the formula for noise-limited network. If this option is chosen, a set of input boxes will appear below allowing user to enter specific parameters required for this calculation. In this case it is considered that the coverage of the transmitter is limited only by propagation losses and other elements of link budget, with received signal operating at the very sensitivity limit. The detailed of the calculation is given in Annex A13.1.2.

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The coverage radius in the noise-limited network is defined by the parameters of Table 17. Note that the input parameter of the Noise-limited network interface are set to zero by default in purpose to allow you to define the radius independently from some parameters set elsewhere in the link.

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• Traffic-limited network option will calculate the coverage radius, based on the formula for traffic-limited network. If this option is chosen, a set of input boxes will appear below allowing user to enter specific parameters required for this calculation (See Annex A13.1.3). 
  
  

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  Figure 157: Traffic limited network coverage radius dialog box

   

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  Table 18: Description of the traffic limited network coverage radius user interface

   

  Description	Symbol	Type	Unit	Comments
  Density		S	1/km2	Maximum number of active transmitter per km2
  Number of channels		S		Number of frequency channels that a radio system provides
  Number of users per channel		S		Number of MS per frequency channel provided by a radio system
  Frequency cluster		S		Size of a group of frequency channels. See Figure 180 for illustrative details.

   

  You should check the consistency of this parameter with the sensitivity, so that if a receiver is placed at given distance such as the maximum coverage radius, the received power is higher than the sensitivity for a reasonable percentage of time (availability).