| 摘要 |
A system for the generation of many-pointed QAM signal spaces by use of multiple, synchronous QAM transmitters is provided. Three individual relatively low BPS data rate transmitters have their outputs connected to different weighting multipliers. The outputs of the weighting multipliers in turn are connected to a summer which produces a composite signal. The input to the individual transmitters comprises a binary data input, the bits of which have been steered to individual ones of low BPS data rate transmitters. The composite output of the summer generates a signal space sufficient for 14,400 BPS transmission utilizing 4800 BPS transmitters.
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