A method of operating a communication system is disclosed. The method comprises acquiring a first frequency band for a first device to wireles sly communicate a first data stream. The center frequency of the first frequency band is f1. A second frequency band for a second device to wirelessly communicate a second data stream is acquired. The center frequency of the second frequency band is f2. A third frequency band that is below the first frequency band and is available is found. The center frequency of the third frequency band is f3. A fourth frequency band that is above the first frequency band and is available is found. The center frequency of the fourth frequency band is f4. If a frequency determination factor of (f1−f3)/(f4−f1) is greater than one, the third frequency band is acquired for the second device.