Check out our Virtual Training on Evaluating Communications Links on June 28
Channel Capacity* is the tight upper bound on the (data) rate at which information can be reliably transmitted over a communications channel. STK doesn’t compute this through its Data Providers, but it can be computed by making use of the Calculation Tool within the Analysis WorkBench functionality.
Where C = Capacity in Megabits per second B = Bandwidth in MHz S/N is Signal to Noise Ratio and can be interchanged C/N which is a power ratio (not in dB). Here are the steps used to create the formula using Calculation Tool:
- Create a Data Element for C/N from the Link Information Data Provider for an access between a transmitter and receiver.
- Convert C/N from dB and add one to form result: R = (1+C/N)
- Use the binary logarithmic single variable function to form result: L = log2(R)
- Create a Data Element for Bandwidth (B) from the Link Information Data Provider for an access between a transmitter and receiver.
- Use a multiplication two variable function to form result: Capacity = B x L
Use this Capacity Scalar Calculation to create a Figure of Merit for a Coverage between a transmitter Asset and receiver Grid Object or a receiver Asset and transmitter Grid Object.