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Process of extracting the original information-bearing signal from a carrier wave
Demodulation is the process of extracting the original information-bearing signal from a carrier wave. A demodulator is an electronic circuit (or computer
Demodulation
Device for receiving radio transmissions
further processing, and finally recovers the desired information through demodulation. Radio receivers are essential components of all systems based on radio
Radio_receiver
Form of signal modulation
in the amplitude of a pulse train interrupting the carrier frequency. Demodulation is performed by detecting the amplitude level of the carrier at every
Pulse-amplitude_modulation
Two-terminal electronic component
rectifiers to convert alternating current (AC) power to direct current (DC), demodulation in radio receivers, and can even be used for logic or as temperature
Diode
Family of digital modulation methods
information capacity using this technique. This comes at the expense of demodulation complexity. In particular, a DSB signal has zero-crossings at a regular
Quadrature amplitude modulation
Quadrature_amplitude_modulation
Electronic method of transmitting information with a carrier wave
detection for FM broadcasts. In software-defined radio implementations, the demodulation may be carried out by using the Hilbert transform (implemented as a filter)
Frequency_modulation
Method for converting signals between digital and analog
above the original signal's bandwidth. Subsequent low-pass filtering for demodulation easily removes this high frequency noise and time averages to achieve
Delta-sigma_modulation
Data communications modulation protocol
implementations of FSK modems exist and are documented in detail. The demodulation of a binary FSK signal can be done using the Goertzel algorithm very
Frequency-shift_keying
American satellite-based radio navigation service
after demodulation. This is done by assigning each satellite a unique binary sequence known as a Gold code. The signals are decoded after demodulation using
Global_Positioning_System
Digital representation of sampled analog signals
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Pulse-code_modulation
Process of varying one or more properties of a periodic waveform
modulation. A demodulator (sometimes detector) is a circuit that performs demodulation, the inverse of modulation. A modem (from modulator–demodulator), used
Signal_modulation
Transmission method used in amateur radio
component is removed, leaving just the original message. For demodulation, the demodulation oscillator's frequency and phase must be exactly the same as
Double-sideband suppressed-carrier transmission
Double-sideband_suppressed-carrier_transmission
Method of encoding digital data on multiple carrier frequencies
Maystrenko, V. A., & Maystrenko, V. V. (2014). The modified method of demodulation N-OFDM signals. 2014 12th International Conference on Actual Problems
Non-orthogonal frequency-division multiplexing
Non-orthogonal_frequency-division_multiplexing
Electronic method of transmitting information with a carrier wave
station, the message signal is extracted from the modulated carrier by demodulation. In general form, a modulation process of a sinusoidal carrier wave may
Amplitude_modulation
Signals broadcast by GPS satellites
GPS signals are broadcast by Global Positioning System satellites to enable satellite navigation. Using these signals, receivers on or near the Earth's
GPS_signals
Type of data encoding
demodulator to keep track of a reference wave. A trade-off is that it has more demodulation errors. There are three major classes of digital modulation techniques
Phase-shift_keying
time-of-flight (TOF) technologies. Based on Current Assisted Photonic Demodulation (CAPD), the company's patented CMOS pixel technology, DepthSense hardware
Sony_Depthsensing_Solutions
System in electronic signal processing
wave and the receiver's local oscillator for the purpose of coherent demodulation. In the transmitter of a communications carrier system, a carrier wave
Carrier_recovery
Radio communication system implemented in software
baseband receiver that provided programmable interference cancellation and demodulation for broadband signals, typically with thousands of adaptive filter taps
Software-defined_radio
A fax demodulator is a device used to intercept fax messages by listening in on a telephone line or radio signal. A typical (Group III) fax transmission
Fax_demodulator
Electronic control system
input frequency. These properties are used for clock synchronization, demodulation, frequency synthesis, clock multipliers, and signal recovery from a noisy
Phase-locked_loop
Disturbance in an electrical circuit due to external sources of radio waves
processing equipment, such as audio power amplifiers and loudspeakers. Demodulation of a high-frequency carrier wave such as an FM radio transmission. Radio
Electromagnetic_interference
Particular representation of a signal
function more accessible and facilitates the derivation of modulation and demodulation techniques, such as single-sideband. As long as the manipulated function
Analytic_signal
Electronic method of transmitting information with a carrier wave
{s}}(t)\cdot \sin \left(2\pi f_{0}t\right).\end{aligned}}} Coherent demodulation of s ssb ( t ) {\displaystyle s_{\text{ssb}}(t)} to recover s ( t ) {\displaystyle
Single-sideband_modulation
Device which extracts info from a modulated radio frequency current or voltage
waveform is a curve that outlines the waveform. A major category of AM demodulation technique involves envelope detection, since the envelope of an AM signal
Detector_(radio)
Transfer of data over a communication channel
waveforms, using a digital modulation method. Passband modulation and demodulation are carried out by modem equipment. Digital transmission and digital
Data_communication
Form of modulation
corresponding to one sample are contiguous in the digital signal. The method for demodulation to an analogue signal remains the same, but the representation of a 50%
Pulse-density_modulation
Family of wireless network protocols
various channels. As with all radio, this is done by the modulation and demodulation of carrier waves. Different versions of Wi-Fi use different techniques
Wi-Fi
Kind of television tuner that allows television signals to be received by a computer
with demodulation and interface logic. Some lower-end cards lack an onboard processor and, like a Winmodem, rely on the system's CPU for demodulation. There
TV_tuner_card
Electronic filter used in receivers
fold. When VSB filter is used in broadcasting, a problem arises during demodulation. While 0 - 0.75 MHz region has two side bands, the region beyond 1.25 MHz
Nyquist_filter
Device which converts video signals to the format used by over-the-air RF broadcasts
quality than a baseband connection due to losses during the modulation and demodulation process. In professional broadcast settings, more sophisticated modulators
RF_modulator
Range of frequencies or wavelengths of electromagnetic radiation
where they are received by an antenna and the information extracted by demodulation in the receiver. Radio waves are also used for navigation in systems
Electromagnetic_spectrum
Method of encoding digital data on multiple carrier frequencies
incoming stream so multiple bits are being transmitted in parallel. Demodulation is based on fast Fourier transform algorithms. OFDM was improved by Weinstein
Orthogonal frequency-division multiplexing
Orthogonal_frequency-division_multiplexing
Type of amplifier that emphasizes a specific frequency in a noisy signal
Usually sine and cosine demodulation is performed simultaneously, which is sometimes also referred to as dual-phase demodulation. This allows the extraction
Lock-in_amplifier
Device to create output for a television
A consumer Palcom DSL-350 satellite-receiver; the IF demodulation tuner is on the bottom left, and a Fujitsu MPEG decoder CPU is in the center of the board
Set-top_box
Representation of a signal as a rectangular wave with varying duty cycle
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Pulse-width_modulation
Performance measure of a digital radio
demodulator does it. One of the stages in a typical phase-shift keying demodulation process produces a stream of I-Q points which can be used as a reasonably
Error_vector_magnitude
Digital modulation scheme
conditions on different routes in PSTN, etc. Both ASK modulation and demodulation processes are relatively inexpensive. The ASK technique is also commonly
Amplitude-shift_keying
Sinusoidal wave without any modulation
signal is extracted from the modulated carrier wave, a process called demodulation. Most radio systems in the 20th century used frequency modulation (FM)
Carrier_wave
Electronic circuit formed on a small, flat piece of semiconductor material
and perform analog functions such as amplification, active filtering, demodulation, and mixing. ICs can combine analog and digital circuits on a chip to
Integrated_circuit
Tuner for digital television channels
(AV) signals needed for television, and performs the following tasks: demodulation; error correction; MPEG transport stream demultiplexing; decompression;
ATSC_tuner
Method for modulation of data
value to the final value, over the symbol duration. The modulation and demodulation of CPM is complicated by the fact that the initial phase of each symbol
Continuous_phase_modulation
Radio signal transmission method
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Frequency-hopping spread spectrum
Frequency-hopping_spread_spectrum
Method of spatial measurement using laser
In these devices each pixel performs some local processing such as demodulation or gating at high speed, downconverting the signals to video rate so
Lidar
Radio hardware tool
high-performance low-level analog signal processing, modulation and demodulation. A separate microcontroller processes demodulated frames. Such setup
Proxmark3
Device that converts sound into an electrical signal
resonant circuit that modulates the frequency of the oscillator signal. Demodulation yields a low-noise audio frequency signal with a very low source impedance
Microphone
Mathematical technique for manipulating signals
confusing. Orthogonality is important in many applications, including demodulation, direction-finding, and bandpass sampling. Franks, L.E. (September 1969)
In-phase and quadrature components
In-phase_and_quadrature_components
Signal-to-noise ratio of a modulated signal
passband signal from the SNR of an analog base band message signal after demodulation. For example, with FM radio, the strength of the 100 MHz carrier wave
Carrier-to-noise_ratio
Filters used in signal processing that are optimal in some sense
seismology and gravitational-wave astronomy. Matched filtering is a demodulation technique with LTI (linear time invariant) filters to maximize SNR. It
Matched_filter
Scheme for controlling errors in data over noisy communication channels
processing in a receiver may be applied to a digital bit stream or in the demodulation of a digitally modulated carrier. For the latter, FEC is an integral
Error_correction_code
Electronic circuit
An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency signal as input and outputs the
Envelope_detector
AM signal with a low-power or suppressed carrier
special case in which the carrier level is reduced below that required for demodulation by a normal receiver. Reduction of the carrier level permits higher power
Reduced-carrier_transmission
Communication system technology
present and allow synchronizing the phase of the local oscillator in the demodulation circuitry. However, SECAM features continuous subcarriers which don't
Pilot_signal
A vector signal analyzer display featuring a constellation diagram, demodulation error data, signal spectrum, and the real-time measured signal
Vector_signal_analyzer
Medical evaluation method
button). They are connected to an oscillator and subsequent frequency demodulation electronics to obtain digital waveforms. During inspiration the cross-sectional
Respiratory inductance plethysmography
Respiratory_inductance_plethysmography
Type of radar where a known stable frequency continuous wave radio energy is transmitted
{\displaystyle {\text{Range}}=0.5C/\delta t} Receiver demodulation is used with FMCW similar to the receiver demodulation strategy used with pulse compression. This
Continuous-wave_radar
Type of shift register in computing
modulation and transmission. This scrambling is removed at the receiver after demodulation. When the LFSR runs at the same bit rate as the transmitted symbol stream
Linear-feedback shift register
Linear-feedback_shift_register
Metric used in LTE networks
over time. BLER is also used for W-CDMA performance requirements tests (demodulation tests in multipath conditions, etc.). BLER is measured after channel
Block_Error_Rate
Type of continuous-phase frequency-shift keying
Communications Magazine, 1979 R. de Buda, Fast FSK Signals and their Demodulation, Can. Elec. Eng. J. Vol. 1, Number 1, 1976 F. Amoroso, Pulse and Spectrum
Minimum-shift_keying
Device that controls current between electrodes
known as the 'sheet beam' tubes and used in some color TV sets for color demodulation. The similar 7360 was popular as a balanced SSB (de)modulator. A beam
Vacuum_tube
Signal processing technique in telecommunications
producing the baseband signal for that channel again. This is called demodulation. The resulting baseband signal is filtered out of the other frequencies
Frequency-division multiplexing
Frequency-division_multiplexing
Light-stabilizing technique
an antisymmetric function of ω − ωres. It can be extracted from Pr by demodulation. First, the reflected beam is directed onto a photodiode, which produces
Pound–Drever–Hall_technique
Home video game console
for a 512 × 424 Time-of-Flight Image Sensor With Multi-Frequency Photo-Demodulation up to 130 MHz and 2 GS/s ADC". IEEE Journal of Solid-State Circuits.
Xbox_One
Radio transmission of audio by frequency modulation
the original on 3 February 2017. Retrieved 12 January 2017. "FM Stereo demodulation circuit". USPTO. Archived from the original on 24 June 2017. Retrieved
FM_broadcasting
Device that both transmits and receives
that it sends and receives a signal, but a modem uses modulation and demodulation. It modulates the signal being transmitted and demodulates the signal
Transceiver
Digital radio broadcast technology
noise on the analog signal, called "HD Radio self-noise", due to analog demodulation of the digital signal(s). In some high fidelity FM receivers in quality
HD_Radio
Frequencies or wavelengths that can pass through a filter
reverse the modulation process. A combined equipment for modulation and demodulation is called a modem. In general, there is an inverse relationship between
Passband
Television that uses analog signals
axis) gating methods is called I/Q demodulation. Another much more popular off-axis scheme was the X/Z demodulation system. Further matrixing[clarification
Analog_television
Branch of engineering
filtering of audio signals for audio equipment or the modulation and demodulation of signals for telecommunications. For digital signals, signal processing
Electrical_engineering
Device that modulates an analog carrier signal to encode digital information
modems, because they frequently contain more than just a modulation/demodulation component. Because high-speed connections are frequently used by multiple
Modem
Algorithm on pulse-width modulation
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Space_vector_modulation
Problem affecting a class of radio receivers
Method of Procedure for Odd-Order I/Q Demodulation Based on Replacing Multistage with Equivalent Single-Stage Demodulation Schemes.// Radioelectron.Commun.Syst
IQ_imbalance
Frequency-division multiple access scheme
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Single-carrier_FDMA
Combat involving electronics and directed energy
from digital EW, and as a continuation of software based modulation and demodulation, cognitive electronic warfare or cognitive electromagnetic warfare (CEW)
Electronic_warfare
Infrared microscopy technique
model and with known measurement parameters (e.g. tapping amplitude, demodulation order, reference material, etc.), the sample permittivity ϵ ( ω ) {\displaystyle
Nano-FTIR
Test signal in television broadcasting
as DVB and ATSC, eliminates the issues introduced by modulation and demodulation of analog signals. Test cards including large circles were used to confirm
Test_card
Energy efficiency enhancement method for digital signal modulation
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Constellation_shaping
Technology for transmitting signals through water
other information by a compatible receiver, in a manner analogous to demodulation in radio communications. Applications include use in underwater diver
Modulated_ultrasound
Type of modem
18 V DC. The main functions of a satellite modem are modulation and demodulation. Satellite communication standards also define error correction codes
Satellite_modem
Sub-discipline of electrical engineering
filtering of audio signals for audio equipment and the modulation and demodulation of radio frequency signals for telecommunications. For digital signals
Electronics_engineering
Modulation technique to reduce signal interference
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Direct-sequence spread spectrum
Direct-sequence_spread_spectrum
Access to the Internet via telephone line
Retrieved 2024-01-21. Quine, Alison (2008-01-28). "Modem (Modulation/Demodulation) Definition". ITPRC. Retrieved 2021-06-14. "СИHДРОМ 21600/V34 или Правда
Dial-up_Internet_access
Type of electrical transformer
simple measurement applications. It is a consequence of using synchronous demodulation, with direct subtraction of the secondary voltages at AC. Modern systems
Linear variable differential transformer
Linear_variable_differential_transformer
Sine wave used to approximate data
be obtained from the dominant frequency in a periodogram. A complex demodulation phase plot can be used to refine this initial estimate for the frequency
Sinusoidal_model
Austrian entrepreneur, physicist, and inventor (1878–1913)
control grid that was designed specifically for amplification rather than demodulation of signals, and is a distant ancestor of the thyratron. After Lieben's
Robert_von_Lieben
Electronic method of transmitting information with a carrier wave
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Angle_modulation
BIOS-based computer malware
channel between different computing systems that utilizes audio modulation/demodulation to exchange data between the computing systems over the air medium.[
BadBIOS
theoretical intervals separating any significant instant of modulation (or demodulation) from the significant instant of the start element immediately preceding
Degree of start-stop distortion
Degree_of_start-stop_distortion
Ratio of useful signal versus co-channel interference received
the signal-to-noise ratio (SNR or S/N) of a modulated signal before demodulation. A distinction is that interfering radio transmitters contributing to
Signal-to-interference_ratio
Signal processing technique
throughput. Furthermore, due to ILI and the imperfect demodulation of base-layer symbols, the demodulation error rate of higher-layer symbols increases too
Hierarchical_modulation
Use of light in the visible spectrum as a telecommunication medium
simpler to encode when compared to OOK. However, a slightly more complex demodulation compensates for that simplicity on the VPPM technique. This decoding
Visible_light_communication
Technology to send internet signals over conventional power line grids
lines, This process ensures consistent broadband connectivity through demodulation, data distribution, and interference mitigation. Modulation: BPL technology
Broadband_over_power_lines
Electronic method of transmitting information with a carrier wave
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Phase_modulation
Project to digitize and restore pictures taken by the Lunar Orbiter program
generate the images, they discovered that they needed the specialized demodulation hardware that had been used by the Lunar Orbiter program but no longer
Lunar Orbiter Image Recovery Project
Lunar_Orbiter_Image_Recovery_Project
Seemingly random, difficult to predict bit stream created by a deterministic algorithm
Iadarola, Grazia; Rapuano, Sergio. "PRBS non-idealities affecting Random Demodulation Analog-to-Information Converters" (PDF). Naszodi, Laszlo. "Articles on
Pseudorandom_binary_sequence
Automatic collection and transmission of data
drilling, is sent through the drilling hole to the surface sensors and the demodulation software. The pressure wave (sana) is translated into useful information
Telemetry
Form of signal modulation using time shifts
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Pulse-position_modulation
Signal processing technique
Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PDM PWM ΔΣM OFDM FDM Multiplexing v
Chirp_spread_spectrum
Technology to decrypt pay television channels
(TV or set-top box) is responsible for tuning to pay TV channels and demodulation of the RF signal, while CAM is responsible for CA descrambling. The Common
Common_Interface
Values which describe behavior of a linear electric circuit
wave phasors using essentially the same circuit as that used for the demodulation of digitally modulated wireless signals. Many electrical properties of
Scattering_parameters
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Girl/Female
Hindu
Sweet creeper or Lovely creeper
Male
Italian
Italian form of Latin Eligius, ELIGIO means "to choose."
Girl/Female
Hindu
Having peace, Cool
Female
English
Spanish equivalent of English Alice, ALICIA means "noble sort."
Girl/Female
Shakespearean
King John' Lady Faulconbridge, widow of Sir Robert Faulconbridge.
Boy/Male
Muslim/Islamic
The father of Ajlah bin Abdullah was so called
Boy/Male
Indian, Punjabi, Sikh
Kingdom of Gems
Surname or Lastname
English
English : variant of Dearden.English : nickname from Old French dur ‘hard’ + dent ‘tooth’.
Boy/Male
Hindu
Illustrious, Noble
Male
Hebrew
Variant spelling of Hebrew Chayim, CHAIM means "life."
DEMODULATION
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DEMODULATION