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

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## 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**

- First, determine the channel throughput (b/s). In this example, the channel throughput (b/s) is given as 75 .
- Next, determine the channel bandwidth (hz). For this problem, the channel bandwidth (hz) is given as 200 .
- Next, determine the channel utilization (%). In this case, the channel utilization (%) is found to be 75.
- 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))