Differbetween
Modulation is the process of influencing data information on the carrier, while demodulation is the recovery of original information at the distant end from the carrier. A modem is an equipment that performs both modulation and demodulation.
- What is used for modulation and demodulation?
- What is the meaning of modulator and demodulator?
- What is meant by modulation?
- Why modulation and demodulation is required?
- Which device is used for modulation?
- What is a DEModulator used for?
- What is modulation and its need?
- Why do we use modulation?
- Which is the best modulation technique?
- How is modulation done?
- What is another word for modulation?
- How does a demodulator work?
What is used for modulation and demodulation?
Modem is abbreviation for Modulator – Demodulator. Modems are used for data transfer from one computer network to another computer network through telephone lines. The computer network works in digital mode, while analog technology is used for carrying massages across phone lines.
What is the meaning of modulator and demodulator?
1. Modulator/demodulator, a device that converts computer signals into a form that can be transmitted down telephone lines. 2. Short for modulator/demodulator. Converts computer signals into a form that can be transmitted down telephone lines.
What is meant by modulation?
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a separate signal called the modulation signal that typically contains information to be transmitted.
Why modulation and demodulation is required?
At the broadcasting station, modulation is done to transmit the audio signal over larger distances to a receiver. When the modulated wave is picked up by the radio receiver, it is necessary to recover the audio signal from it. This process is accomplished in the radio receiver and is called demodulation.
Which device is used for modulation?
A device that performs both modulation and demodulation is called a modem -- a name created by combining the first letters of MOdulator and DEModulator. Explanation: A device that performs both modulation and demodulation is called a modem -- a name created by combining the first letters of MOdulator and DEModulator.
What is a DEModulator used for?
A demodulator is a circuit that is used in amplitude modulation and frequency modulation receivers in order to separate the information that was modulated onto the carrier from the carrier itself. A demodulator is the analog part of the modulator.
What is modulation and its need?
Modulation is simply a widely used process in communication systems in which a very high-frequency carrier wave is used to transmit the low-frequency message signal so that the transmitted signal continues to have all the information contained in the original message signal.
Why do we use modulation?
Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.
Which is the best modulation technique?
Multiple techniques have emerged to achieve and improve spectral efficiency.
- Amplitude Shift Keying (ASK) and Frequency Shift Keying (FSK) ...
- Binary Phase Shift Keying (BPSK) And Quadrature Phase Shift Keying (QPSK) ...
- Data Rate And Baud Rate. ...
- Multiple Phase Shift Keying (M-PSK) ...
- Quadrature Amplitude Modulation (QAM)
How is modulation done?
Frequency of an input signal can also be changed. If this input signal is added to the pure carrier wave, it will thereby change the frequency of the carrier wave. ... In fact, any strategy that combines an input signal with a carrier wave to encode speech or other useful information is called a modulation scheme.
What is another word for modulation?
In this page you can discover 21 synonyms, antonyms, idiomatic expressions, and related words for modulation, like: attenuation, timbre, inflection, modulator, qpsk, modulate, bpsk, amplitude, oscillator, intonation and pitch.
How does a demodulator work?
A demodulator is an electronic circuit (or computer program in a software-defined radio) that is used to recover the information content from the modulated carrier wave. ... The signal output from a demodulator may represent sound (an analog audio signal), images (an analog video signal) or binary data (a digital signal).
