| 摘要 |
A multipath simulator which delays a baseband signal and then translates this delay to the modulated RF signal. This is done by producing a difference signal which is the difference between the delayed and undelayed baseband signals. The undelayed baseband signal first modulates the RF carrier directly. This modulated RF carrier is then divided into two branches. The difference signal is then used to modify the modulation on one of these branches to make it appear as if it had been modulated by the delayed baseband signal. The linear sum of these two RF signals is a signal which simulates the effects of multipath on modulated RF carrier signals.
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