Demodulation is the process of extracting the original information-bearing signal from a carrier wave. A demodulator is an electronic circuit (or computer...
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in the amplitude of a pulse train interrupting the carrier frequency. Demodulation is performed by detecting the amplitude level of the carrier at every...
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Diode (section Radio demodulation)
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...
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Quadrature amplitude modulation (section Demodulation)
information capacity using this technique. This comes at the expense of demodulation complexity. In particular, a DSB signal has zero-crossings at a regular...
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Radio receiver (section Demodulation)
further processing, and finally recovers the desired information through demodulation. Radio receivers are essential components of all systems based on radio...
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typically refer to physical layer protocol duties such as modulation, demodulation, line coding, equalization, error control, bit synchronization and multiplexing...
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Delta-sigma modulation (section Demodulation)
above the original signal's bandwidth. Subsequent low-pass filtering for demodulation easily removes this high frequency noise and time averages to achieve...
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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...
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theoretical intervals separating any significant instant of modulation (or demodulation) from the significant instant of the start element immediately preceding...
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intervals separating any two significant instants of modulation (or demodulation), to the unit interval. These instants are not necessarily consecutive...
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Phase-shift keying (section Demodulation)
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...
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component is removed, leaving just the original message. For demodulation, the demodulation oscillator's frequency and phase must be exactly the same as...
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modulation. A demodulator (sometimes detector) is a circuit that performs demodulation, the inverse of modulation. A modem (from modulator–demodulator), used...
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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...
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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...
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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...
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Composite video (section Demodulation loss)
Composite video, also known as CVBS (composite video baseband signal or color, video, blanking and sync), is an analog video format that combines image...
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Frequency modulation (section Demodulation)
detection for FM broadcasts. In software-defined radio implementations, the demodulation may be carried out by using the Hilbert transform (implemented as a filter)...
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Carrier recovery (redirect from Coherent demodulation)
wave and the receiver's local oscillator for the purpose of coherent demodulation. In the transmitter of a communications carrier system, a carrier wave...
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Single-sideband modulation (section Demodulation)
{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...
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digital modulation method. The passband modulation and corresponding demodulation is carried out by modem equipment. Digital communications, including...
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GPS signals (section Demodulation and decoding)
GPS signals are broadcast by Global Positioning System satellites to enable satellite navigation. Using these signals, receivers on or near the Earth's...
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Pulse-code modulation (section Demodulation)
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...
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input frequency. These properties are used for clock synchronization, demodulation, frequency synthesis, clock multipliers, and signal recovery from a noisy...
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Maystrenko, V. A., & Maystrenko, V. V. (2014). The modified method of demodulation N-OFDM signals. 2014 12th International Conference on Actual Problems...
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Nyquist filter (section Demodulation problems)
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...
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Amplitude modulation (section Demodulation methods)
station, the message signal is extracted from the modulated carrier by demodulation. In general form, a modulation process of a sinusoidal carrier wave may...
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Fax demodulator (redirect from Fax demodulation)
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...
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Pilot signal (redirect from Demodulation reference signal)
present and allow synchronizing the phase of the local oscillator in the demodulation circuitry. However, SECAM features continuous subcarriers which don't...
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baseband receiver that provided programmable interference cancellation and demodulation for broadband signals, typically with thousands of adaptive filter taps...
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