| 摘要 |
Distortion or noise in detected signals, due to intermodular distortion in transmitting sets which transmit multiple channels simultaneously via the same element or component, is reduced by selecting carrier frequencies such that they are not all spaced by the same given frequency. In one embodiment, a first group of channels have one spacing, and an adjacent group have the same spacing but with carrier frequencies offset from a multiple of the spacing used in the first group. In another embodiment, the carrier frequencies of adjacent channels are unequally spaced. Two adjacent blocks of channels may use the same, or different, patterns of unequal spacing.
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