Enter the channel throughput (b/s), the channel bandwidth (hz), and the channel utilization (%) into the calculator to determine the Spectral Efficiency.

## Spectral Efficiency Formula

The following formula is used to calculate the Spectral Efficiency.

Espect = T / (B*U/100)
• Where (b/s/Hz) is the Spectral Efficiency ((b/s/Hz))
• T is the channel throughput (b/s)
• B is the channel bandwidth (hz)
• U is the channel utilization (%)

To calculate the spectral efficiency, divide the channel throughput by the product of the channel bandwidth and channel utilization rate.

## How to Calculate Spectral Efficiency?

The following example problems outline how to calculate the Spectral Efficiency.

Example Problem #1

1. First, determine the channel throughput (b/s). In this example, the channel throughput (b/s) is given as 75 .
2. Next, determine the channel bandwidth (hz). For this problem, the channel bandwidth (hz) is given as  200 .
3. Next, determine the channel utilization (%). In this case, the channel utilization (%) is found to be 75.
4. Finally, calculate the Spectral Efficiency using the formula above:

Espect = T / (B*U/100)

Inserting the values from above and solving yields:

Espect = 75/ (200*75/100) = .50 ((b/s/Hz))

Example Problem #2

Using the same method as above, determine the variables required by the equation. For this example problem, these are provided as:

channel throughput (b/s) = 50

channel bandwidth (hz) = 300

channel utilization (%) = 20

Enter these given values yields:

Espect = 50 / (300*20/100) = .833 ((b/s/Hz))