Frequency Reuse

Technique for using a specified range of frequencies more than once in the same radio system so that the total capacity of the system is increased without increasing its allocated bandwidth. Frequency reuse schemes require sufficient isolation among the signals that use the same frequencies so that mutual interference among them is controlled at an acceptable level. For satellites, frequency reuse can be achieved by using orthogonal polarization states for transmission and/or by using satellite antenna (spot) beams that serve separate, non-overlapping geographic regions. See also spot beam.