The frequency demodulation provided by the electronic discriminator found in every FM radio is precisely the process needed to recover the molecular velocity signal.
Its innovation lies in the design of the detection mechanism in the demodulator , which is based on symbol pattern recognition.
Software-defined radio ‘tunes’ and demodulates radio signals with software, using off-the-shelf, low-cost computer parts.
A modem is a piece of telecommunications equipment which modulates and demodulates a message.
The receiver demodulates the wireless signal and ships it on to the customer's terminal equipment.
Thus, this signal can be demodulated and played on an ordinary FM radio receiver.
A simple demodulation scheme eliminates the need for high-speed photodetectors and signal processing.
This block does not perform waveform specific processing such as demodulation or equalization.
The fundamental characteristic of software radio is that software defines the transmitted waveforms, and software demodulates the received waveforms.
Tolkachev was directed to tune into a certain short wave frequency at specific times and days with his demodulator unit connected to his radio to capture the message being sent.