CFR

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CFRCode of Federal Regulations
CFRCost and Freight (shipping)
CFRCouncil on Foreign Relations
CFRCenter for Resolution (various locations)
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CFRCharter of Fundamental Rights (EU)
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CFRCampaign Finance Reform
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CFRCommunity First Responder
CFRCrest Factor Reduction (algorithm)
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CFRCaile Ferate Romane (Romanian Railways)
CFRConfédération Française des Retraités (French: French Confederation of Pensioners)
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CFRCountry Framework Report (various organizations)
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CFRConstant Failure Rate
CFRCubic Foot per Revolution (measurement)
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CFRCarbon Film Resistor
CFRCenter for Rusmiddelforskning (Norwegian: Center for Alcohol and Drug)
CFRCandy Fund Raiser (disc golf)
CFRCentral Forest Reserve
CFRCoordinating Fuel and Equipment Research Committee (Coordinating Research Council, Inc.)
CFRCustom Flat Ride (Atari)
CFRCanadian Forces Registration
CFRChicken Fried Rice
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CFRConsolidated Fiscal Report
CFRCentre de Formation Régional (French: Regional Training Center; various locations)
CFRCenter for Feminist Research (various locations)
CFRCaen, France - Carpiquet (Airport Code)
CFRCommissioning from the Ranks (Canadian military)
CFRClaims Fluctuation Reserve (insurance industry)
CFRComprehensive Facility Review
CFRCatastrophic Failure Rate
CFRCommercial Fast Reactor
CFRCritical Functional Response
CFRCumulative Failure Rate
CFRCollège Français de Reus (French: French College of Reus; Reus, Spain)
CFRContact Flight Rules
CFRCarton Flow Rack (material handling)
CFRCondensate Filter Demineralizer
CFRCustomer Field Representative
CFRContractor Funds Report
CFRFranciscan Friars of the Renewal, Fr. Groeschel (religious order)
CFRContractor Flight Release
CFRCentre Fédéral de Ressources (French: Federal Resource Center)
CFRCourse Frequency Receiver
CFRColdwater Fishery Resource
CFRCase Form Report
CFRCarry Forward Form
CFRCommission Foncière Rurale (French)
CFRCartridge Fuse Rating
CFRCan't Find the Road (undefined radio program format)
CFRCylinder Firing Rate
CFRComputer Facial Recognition
CFRChemical Functional Review
CFRCustomer Failure Report
CFRConception Fabrication Robotique (French: Manufacturing Robotics Design; Canada)
CFRConceptual Feasibility Report
CFRCumulative Financial Requirements
CFRControl Filter Rate
CFRCategory for Renaming (Wikimedia Foundation)
CFRCommander Federal Republic
CFRCleaning Force Ratio
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References in periodicals archive ?
Caption: Figure 5: The channel frequency response curves of OFDM signal.
The measured channel impulse response (CIR) [h.sup.m]([tau], [[phi].sub.l]) for each rotation angle [[phi].sub.l] (with l = [1, ..., L]) can be calculated via inverse Fourier transform of the channel frequency response directly recorded in the measurements.
Moreover, the number of channel taps required for estimation in the time domain is significantly fewer than the number of FFT points where the channel frequency response needs to be estimated [15].
where [bar.[H.sub.00](f)] and [N.sub.00](f) are respectively the true channel frequency response and the noise.
where [[??].sub.ls](k) is the channel estimation value of LS algorithm, H(k) is the channel frequency response of LS algorithm, and [sigma](k) is additive white Gaussian noise (AWGN).
ZF equalization may lead to great noise enhancements at the frequencies where the channel frequency response has spectral nulls.
The estimation of the channel frequency response on the kth subcarrier in the frequency domain, [??][k], is given as follows:
Two major categories of pilot-aided channel estimation methods are interpolation-based channel estimation methods and DFT-based channel estimation methods (Deneire et al., 2003), Interpolation-based method estimates channel frequency response (CFR) by interpolating the received pilot subcarriers.
The 16 x 1 receive signal vector at each antenna port is equalized in frequency domain at each subcarrier using the corresponding 16 x 1 channel frequency response vector.
A conventional approach to estimate the channel is the least square (LS) estimation of channel frequency response on the pilot subcarriers.
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