# occupied bandwidth

**occupied bandwidth:** The width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers emitted are each equal to a specified percentage *B* /2 of the total mean power of a given emission. Unless otherwise specified by the CCIR for the appropriate class of emission, the value of *B* /2 should be taken as 0.5%. [NTIA] [RR] (188) *Note 1:* The percentage of the total power outside the occupied bandwidth is represented by *B* . *Note 2:* In some cases, *e.g.* , multichannel frequency-division multiplexing systems, use of the 0.5% limits may lead to certain difficulties in the practical application of the definition of occupied and necessary bandwidth; in such cases, a different percentage may prove useful.

This HTML version of FS-1037C was last generated on Fri Aug 23 00:22:38 MDT 1996