# Edit request Add topic "Orthogonal frequency-division multiplexing (OFDM)" Accepted

## Changes: 13

• ###### AddOrthogonal frequency-division multiplexing (OFDM) Tutorial
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Orthogonal frequency-division multiplexing (OFDM) Tutorial
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2002
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An introductory tutorial to OFDM by complextoreal.com - Intuitive guide to topics in communications and digital signal processing.
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• ###### AddPower and Energy of a Signal : Demystified
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Power and Energy of a Signal : Demystified
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2013-12-20
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Clearly understand: power and energy of a signal, their mathematical definition, physical significance and computation in signal processing context.
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https://www.gaussianwaves.com/2013/12/power-and-energy-of-a-signal/
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• ###### AddIntroduction to OFDM - orthogonal Frequency division multiplexing
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Introduction to OFDM - orthogonal Frequency division multiplexing
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2011-05-24
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In modulations, information is mapped on to changes in frequency, phase or amplitude (or a combination of them) of a carrier signal. Multiplexing deals with allocation/accommodation of users in a given bandwidth (i.e. it deals with allocation of available resource). OFDM is a combination of modulation and multiplexing.
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https://www.gaussianwaves.com/2011/05/introduction-to-ofdm-orthogonal-frequency-division-multiplexing-2/
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• ###### AddOrthogonal frequency-division multiplexing (OFDM)
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Orthogonal frequency-division multiplexing (OFDM)
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In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission and a method of encoding digital data on multiple carrier frequencies. OFDM has developed into a popular scheme for wideband digital communication, used in applications such as digital television and audio broadcasting, DSL internet access, wireless networks, power line networks, and 4G/5G mobile communications.OFDM is a frequency-division multiplexing (FDM) scheme that was introduced by Robert W. Chang of Bell Labs in 1966. In OFDM, multiple closely spaced orthogonal subcarrier signals with overlapping spectra are transmitted to carry data in parallel. Demodulation is based on fast Fourier transform algorithms. OFDM was improved by Weinstein and Ebert in 1971 with the introduction of a guard interval, providing better orthogonality in transmission channels affected by multipath propagation.
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https://en.wikipedia.org/?curid=22691
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Transmission (telecommunications)
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In telecommunications, transmission is the process of sending and propagating an analog or [[digital signal using a wired, optical, or wireless electromagnetic transmission medium. Transmission technologies typically refer to physical layer protocol duties such as modulation, demodulation, line coding, equalization, error control, bit synchronization and multiplexing, but it may also involve higher-layer protocol duties, for example, digitizing an analog signal, and data compression. Transmission of a digital message, or of a digitized analog signal, is known as data transmission. Examples of transmission are the sending of signals with limited duration, for example, a block or packet of data, a phone call, or an email.
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https://en.wikipedia.org/?curid=609152
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Signal
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In signal processing, a signal is a function that conveys information about a phenomenon. In electronics and telecommunications, it refers to any time varying voltage, current or electromagnetic wave that carries information. A signal may also be defined as an observable change in a quality such as quantity.
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https://en.wikipedia.org/wiki/Signal
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• ###### AddOrthogonal frequency-division multiplexing (OFDM) is treated inOrthogonal frequency-division multiplexing (OFDM) Tutorial
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• ###### AddOrthogonal frequency-division multiplexing (OFDM) is treated inIntroduction to OFDM - orthogonal Frequency division multiplexing
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• ###### AddSignal is applicable toPower and Energy of a Signal : Demystified
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• ###### AddSignal processing a subtopic ofSignal
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• ###### AddOrthogonal frequency-division multiplexing (OFDM) a subtopic ofSignal processing
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• ###### AddSignal processing a tool forTransmission (telecommunications)
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• ###### AddSignal a subtopic ofTransmission (telecommunications)
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