| 摘要 |
A system for transmitting and receiving frequency modulated signals utilizes linked compressor/expander (Lincompex) techniques. The signal to be transmitted is first processed by a Lincompex modulator which infinitely compresses the signal and produces a control tone representative of this compression process. After being processed by the Lincompex modulator, the compressed signal is frequency modulated and transmitted. A receiver having a Lincompex demodulator is used to receive the modulated signal. The received signal is initially demodulated by a discriminator prior to being expanded by the Lincompex demodulator according to the received control tone.
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