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Orthogonal frequency-division multiplexing

In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital (binary) 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…

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Characteristics and principles of operation

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Usage

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Idealized system model

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Efficiency comparison between single carrier and multicarrier

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Other orthogonal transforms

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Orthogonal frequency-division multiplexing

Nodes246
Edges245
Triples84
Avg. degree1.99
Density0.00813
Components1

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Orthogonal frequency-division multiplexing

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related to External links · 37
Orthogonal frequency-division multiplexing → Alcatel-Lucent Chair, BBC's, COFDM, COFDM Archived, CP, Cyclic Prefix, Debbah, International Television Symposium, Introduction, January, Mark Massel, Mark MasselOFDM, Mbit/s, Numerous, OFDM, OFDM Systems Archived, Orthogonal Frequency-Division Multiplex TechnologyShort, Page, Prof, Projekte/Theo/OFDM/node6
related to Flash-OFDM · 20
Orthogonal frequency-division multiplexing → April, As, C-Net C450, CDMA2000, Datame, Digita, Europe, F-OFDM, Fast, Flarion, Flash-OFDM, GSM, In February, In Finland, It, January, MHz, NMT-450, OFDM, Qualcomm
see also · 7
Orthogonal frequency-division multiplexing → ATSC, FDMA, N-OFDM, Orthogonal Time Frequency Space, OTFS, Polarization-division, SC-FDMA

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ofdm used channel displaystyle signal modulation frequency orthogonal digital receiver interference using carrier cofdm symbol may wireless also multipath power

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
digital televisioninstance ofused in applications0.80text
audio broadcastinginstance ofused in applications0.80text
DSL internet accessinstance ofused in applications0.80text
wireless networksinstance ofused in applications0.80text
power line networksinstance ofused in applications0.80text
and 4G/5G mobile communications.OFDM is a frequency-division multiplexinginstance ofused in applications0.80text
Ultrawidebandinstance ofThe reason that the guard interval consists of a copy of the end of the OFDM symbol is so that the receiver will integrate over an integer number of sinusoid cycles for each of…0.80text
in the interest of transmitted powerinstance ofThe reason that the guard interval consists of a copy of the end of the OFDM symbol is so that the receiver will integrate over an integer number of sinusoid cycles for each of…0.80text
cyclic prefix is skippedinstance ofThe reason that the guard interval consists of a copy of the end of the OFDM symbol is so that the receiver will integrate over an integer number of sinusoid cycles for each of…0.80text
nothing is sent during the guard intervalinstance ofThe reason that the guard interval consists of a copy of the end of the OFDM symbol is so that the receiver will integrate over an integer number of sinusoid cycles for each of…0.80text
DPSK or DQPSK is applied to each subcarrierinstance ofat the cost of delay between reception and decoding which also becomes comparable with OFDM.If differential modulation0.80text
equalization can be completely omittedinstance ofat the cost of delay between reception and decoding which also becomes comparable with OFDM.If differential modulation0.80text

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