A report on Modulation
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.
- Modulation50 related topics with Alpha
Carrier wave
10 linksIn telecommunications, a carrier wave, carrier signal, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an information-bearing signal for the purpose of conveying information.
Amplitude modulation
10 linksAmplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave.
Radio receiver
9 linksElectronic device that receives radio waves and converts the information carried by them to a usable form.
Electronic device that receives radio waves and converts the information carried by them to a usable form.
Modulation is the process of adding information to a radio carrier wave.
Radio
8 linksTechnology of signaling and communicating using radio waves.
Technology of signaling and communicating using radio waves.
In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter.
Orthogonal frequency-division multiplexing
10 linksType of digital transmission and a method of encoding digital data on multiple carrier frequencies.
Type of digital transmission and a method of encoding digital data on multiple carrier frequencies.
Based on this feedback information, adaptive modulation, channel coding and power allocation may be applied across all subcarriers, or individually to each subcarrier.
Modem
6 linksComputer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio.
Computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio.
A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver demodulates the signal to recreate the original digital information.
Demodulation
6 linksExtracting the original information-bearing signal from a carrier wave.
Extracting the original information-bearing signal from a carrier wave.
There are many types of modulation so there are many types of demodulators.
Frequency-division multiplexing
7 linksTechnique by which the total bandwidth available in a communication medium is divided into a series of non-overlapping frequency bands, each of which is used to carry a separate signal.
Technique by which the total bandwidth available in a communication medium is divided into a series of non-overlapping frequency bands, each of which is used to carry a separate signal.
The carrier signal and the baseband signal are combined in a modulator circuit.
Baseband
6 linksIn telecommunications and signal processing, baseband is the range of frequencies occupied by a signal that has not been modulated to higher frequencies.
Single-sideband modulation
6 linksIn radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation used to transmit information, such as an audio signal, by radio waves.