What is Bandwidth Usage?

Occupied bandwidth refers to a type of broadband where the average power transmitted out of band below its lower frequency limit or above the upper frequency limit is equal to 0.5% of the total average power of a given transmission.

Occupied bandwidth refers to the

When the carrier is tuned by a sine wave, 77% of the total energy of the modulated carrier is contained in a bandwidth with twice the peak frequency offset, and 93% is contained in twice the bandwidth with the sum of the peak frequency offset and the modulation frequency. According to the literature, the energy distribution of modulation signals above 60 channels is similar to the energy distribution of random noise. Therefore, the theory of frequency modulation with normal random noise has been developed and used to simulate multiple modulated signals.

If the effective modulation index is very large, the power spectrum distribution of the FM wave is close to the Gaussian distribution, regardless of the precise power distribution of the FM wave. For a large modulation index, the occupied bandwidth is twice the peak frequency offset; for a small modulation index, the occupied bandwidth is twice the sum of the peak frequency offset and the maximum modulation frequency. ^[1]