demodulation


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demodulation:

see modulationmodulation,
in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in accordance with an information-bearing signal wave (the modulating wave); demodulation is the process by which the original signal is recovered from the wave
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demodulation

[dē‚mäj·ə′lā·shən]
(communications)
The recovery, from a modulated carrier, of a signal having substantially the same characteristics as the original signal.

demodulation

Electronics the act or process by which an output wave or signal is obtained having the characteristics of the original modulating wave or signal; the reverse of modulation

demodulation

(communications)
To recover the signal from the carrier. For example, in a radio broadcast using amplitude modulation the audio signal is transmitted as the mean amplitude of a radio-frequency carrier so demodulation requires a circuit which measures the amplitude and filters out the carrier. There are many other kinds of modulation and corresponding demodulation.
References in periodicals archive ?
The addition of DVB-S2x demodulation enables full compatibility with next-generation high-data rate satellite distribution networks.
Based on the entire sparse graph, the demodulation or decoding can use not only the knowledge of channels, but also parity-check information.
As mentioned before, the demodulation of a single interferogram often involves a combination of methods (GA + Zernike, PSO + Zernike, Neuronal networks + others, etc.
Compliance with free-to-air international analog demodulation broadcast standards.
The Vigo Mobile TV IP platform provides a complete demodulation solution, from digitized IF or I/Q input, through demodulation and error-correction, to provide multiple DMA IP datagram output streams for DVB-H, and MPEG-2 transport stream for T-DMB, the company claims.
The combination of Conexant's PCI video processor and digital tuning and demodulation technologies with RAVISENT's CineMaster HDTV will create "the first affordable, full-resolution HDTV solutions for mainstream PCs," the two firms say.
With both demodulation of the DVB-T signal and decoding of the H.
The objective of this activity is to develop and demonstrate in the field a receiver terminal implementing the newly defined DVB Carrier-ID standard (DVB-CID) for the detection and demodulation of multiple transmitting carriers.
Digital Demodulation Verifies Accuracy of Advanced Microwave Signal Simulators: Measurement Uncertainty and Implementation Alternatives
World's first broadcast TV receiver using software demodulation passes latest NorDig specifications for DVB-T
Firmware personalities include digital downconversion, signal generation, channel simulation, pulse generation, filtering, spectrum analysis, decimation, PSK and PM carrier demodulation, subcarrier B/QPSK demodulation, and Viterbi decoding.
During read operations, the on-chip digital PLL (phase-locked loop) provides high data-recovery rates with EFM and EFM+ demodulation.