FRF

(redirected from Flat Rayleigh Fading)
AcronymDefinition
FRFFuji Rock Festival
FRFFrench Francs (old currency code; replaced by EUR)
FRFFondation Raoul Follereau (French foundation)
FRFFrequency Response Function
FRFFederatia Româna de Fotbal (Romanian Futbol Federation)
FRFFree Form
FRFField Registration File
FRFFrame Relay Fragmentation
FRFFacility Request Form (various organizations)
FRFFrame Relay Forum
FRFFurReal Friends (online community)
FRFField Research Facility
FRFFlorida Retail Federation
FRFFamily Radio Face-Held (equipment class)
FRFFutenma Replacement Facility (Japan)
FRFFirst Run Features
FRFFatigue Reliability Factor (engineering)
FRFFragment Retention Film (polyester window film)
FRFFinancial Responsibility Form (various organizations)
FRFFachvereinigung Rohrleitungs Formstücke eV
FRFFloating-Point Register File
FRFFinnish Rescue Force
FRFFire-Resistant Fuel
FRFFoundation for Religious Freedom (Los Angeles, CA, USA)
FRFFinite-Rate Feedback
FRFFinnish Rugby Federation
FRFFlood Relief Fund (Pakistan)
FRFForm-Resolving Field (research)
FRFFlight Records Folder (USAF)
FRFFlat to Round to Flat (cable)
FRFFlat Rayleigh Fading
FRFFour-Resonator Filter
FRFFact-Related Field
FRFField Reporting Facility
FRFFree Realms Forums (website)
References in periodicals archive ?
Bouallegue, "Cramer-Rao lower bound for NDA SNR estimation from linear modulation schemes over flat Rayleigh fading channel," 2013.
Yang, "LDPC-coded Modulation for Transmission over AWGN and Flat Rayleigh Fading Channels," Master's thesis, Faculte' Des Sciences Et De Genie' Universite' Laval Que'bec, 2010.
1 Simulations parameters and their values Parameters Values Digital Modulation QPSK, 8QAM, 16QAM, 64QAM, 265QAM Distance between Source 1Km and Destination, d Number of Relay Nodes, N 1, 4, 8 Channels AWGN, flat Rayleigh fading LDPC Codes WiMAX LDPC codes LDPC Code Rate, r 1/2, 2/3, 3/4, 5/6 Codeword Length, n 2304 bit Encoding Richardson-Urbanke algorithm Decoding Logarithmic BP algorithm Maximum number of iterations 30 Table.
To overcome these problems, we devise a new LLR approximation using Padee approximation 22] on the uncorrelated flat Rayleigh fading channels with unknown CSI for BPSK and 8-PAM.
Figure 5 shows bit error rate (BER) of ([lambda](x), [rho](x)) = ([x.sup.2], [x.sup.3]) LDPC codes with N = 15000 for the uncorrelated flat Rayleigh fading channel with 8-PAM.
In this paper, we apply the Padee approximation, which is a generalization of the Taylor approximation, to the LLR function on the uncorrelated flat Rayleigh fading channels with unknown CSI.
Since the jointly statistical analysis of [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] for j = 1,2, ..., [N.sub.k] may be difficult in flat Rayleigh fading channels that are changing between time slots, we assume that [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] are independent.
where [x.sub.m] is the m-th user's data, [R.sub.mn] is the received signal from the m-th user to the n-th user, [g.sub.mn] is the flat Rayleigh fading channel coefficient between the m-th user and the n-th user, and [z.sub.m] is AWGN with zero mean and [N.sub.0] variance.
The flat Rayleigh fading channels are also assumed.