A method of increasing satellite link capacity

The proposed method of repeater trunk multiplexing for the increasing of satellite link capacity is assessed and found to compare favorably with conventional frequency division methods without spectrum overlap. It is assumed that the repeater trunk is fully occupied by one carrier, which is frequency modulated by the group spectrum of the channels, and that the modulation index is large. The spectrum width is approximately defined by the frequency deviation. In order to transmit two carriers through the trunk, each carrier being modulated by the group spectrum of the same number of channels, n, calls for the use of at least half the frequency deviation, approximately halving the power of each carrier. In the method proposed, the coincidence of the HF spectra of two signals calls for the reduction of each carrier's power by at least 3 dB, but the frequency deviation remains unchanged.