Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Orthogonal_frequency-division_multiplexing> ?p ?o }
- Orthogonal_frequency-division_multiplexing abstract "Orthogonal frequency-division multiplexing (OFDM) is 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, powerline networks, and 4G mobile communications.OFDM is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large number of closely spaced orthogonal sub-carrier signals are used to carry data on several parallel data streams or channels. Each sub-carrier is modulated with a conventional modulation scheme (such as quadrature amplitude modulation or phase-shift keying) at a low symbol rate, maintaining total data rates similar to conventional single-carrier modulation schemes in the same bandwidth.The primary advantage of OFDM over single-carrier schemes is its ability to cope with severe channel conditions (for example, attenuation of high frequencies in a long copper wire, narrowband interference and frequency-selective fading due to multipath) without complex equalization filters. Channel equalization is simplified because OFDM may be viewed as using many slowly modulated narrowband signals rather than one rapidly modulated wideband signal. The low symbol rate makes the use of a guard interval between symbols affordable, making it possible to eliminate intersymbol interference (ISI) and utilize echoes and time-spreading (on analogue TV these are visible as ghosting and blurring, respectively) to achieve a diversity gain, i.e. a signal-to-noise ratio improvement. This mechanism also facilitates the design of single frequency networks (SFNs), where several adjacent transmitters send the same signal simultaneously at the same frequency, as the signals from multiple distant transmitters may be combined constructively, rather than interfering as would typically occur in a traditional single-carrier system.".
- Orthogonal_frequency-division_multiplexing wikiPageExternalLink 01_OFDM_Tutorial_Nisar.pdf.
- Orthogonal_frequency-division_multiplexing wikiPageExternalLink OFDM_links.html.
- Orthogonal_frequency-division_multiplexing wikiPageExternalLink 5345.html.
- Orthogonal_frequency-division_multiplexing wikiPageExternalLink paper_15.shtml.
- Orthogonal_frequency-division_multiplexing wikiPageExternalLink www.digitaltvbooks.com.
- Orthogonal_frequency-division_multiplexing wikiPageExternalLink cofdm.pdf.
- Orthogonal_frequency-division_multiplexing wikiPageExternalLink ofdmstepbystep.
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- Orthogonal_frequency-division_multiplexing wikiPageExternalLink ofdmtutorial.pdf.
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- Orthogonal_frequency-division_multiplexing wikiPageExternalLink www.wimaxforum.org.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink 3G.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink 3rd_Generation_Partnership_Project_2.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink 8VSB.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink ANSI_T1.413_Issue_2.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink ATSC_standards.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Additive_white_Gaussian_noise.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Analog-to-digital_converter.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Antenna_diversity.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Asymmetric_digital_subscriber_line.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Attenuation_distortion.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Audio_Video_Standard.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink BCH_code.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Bit_error_rate.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink C-Netz.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink CDMA2000.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Carrier_frequency.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Carrier_interferometry.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Carrier_wave.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Category:Multiplexing.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Category:Quantized_radio_modulation_modes.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Category:Software-defined_radio.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Cellular_network.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Channel_(communications).
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Channel_access_method.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Channel_allocation_schemes.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Code_division_multiple_access.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Cognitive_radio.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Complex_conjugate.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Copper.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Crosstalk.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink DBm.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink DOCSIS.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink DVB-C.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink DVB-S2.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink DVB-T.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink DVB-T2.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Data.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Data_compression.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Data_rate_units.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Data_transmission.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Detector_(radio).
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital-to-analog_converter.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_Radio_Mondiale.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_Terrestrial_Multimedia_Broadcast.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_audio_broadcasting.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_audio_radio_service.
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- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_radio.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_signal_processing.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_subscriber_line.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digital_television.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Digiweb.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Diversity_gain.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Dolby_Digital.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Doppler_effect.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Dynamic_range.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Dynamic_single-frequency_networks.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink E-UTRA.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Equalization_(communications).
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Error_detection_and_correction.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Error_floor.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink FFTW.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Fading.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Fast_Fourier_transform.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Finite_impulse_response.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Finland.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Forward_error_correction.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Frequency-division_multiple_access.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink Frequency-division_multiplexing.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink G.992.1.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink G.992.3.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink G.992.5.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink G.fast.
- Orthogonal_frequency-division_multiplexing wikiPageWikiLink G.hn.