| 摘要 |
In response to a first signal having modulation representing information and a modulation index, embodiments of the present invention generate a second signal that differs from the first signal in its modulation index, and demodulate the second signal. In one embodiment, an arrangement having a signal processor is adapted to receive a first signal having modulation representing information and having a first modulation index and to generate, in response to the first signal, a second signal having frequency modulation representing the information and having a second modulation index different from the first modulation index, and a demodulator coupled to the signal processor so as to receive and demodulate the second signal. In another embodiment, a method comprises the steps of providing a first signal having modulation representing information and having a first modulation index; generating, in response to the first signal, a second signal having modulation representing the information and having a second modulation index different from the first modulation index; and demodulating the second signal.
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