κ μ and η μ fading
Báo cáo khoa học: Synthesis and function of ribosomal proteins – fading models and new perspectives pptx
... for proteins involved in cell proliferation (MIF and cenpA), survival (i.e survivin, BI-1, and dad1), and ribosome biogenesis (members of the small and large ribosomal subunits) Interestingly, not ... availability of growth factors, hormones, and nutrients, result in the activation of signaling pathways that rapidly and reversibly modulate the translation of RP mRNAs and the other TOP mRNAs (Fig 1) ... with an estimated half-life of about days for both RPs and rRNA [47] Several laboratories have tried to understand how ribosomes are recycled and whether there is a specific mechanism of degradation...
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Báo cáo sinh học: " Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" pot
... known and unknown CSI and their special cases, and Section introduces the suboptimal estimator In Section 5, we analyze the asymptotic performance and complexity of the presented MLEs and discuss ... observation and channel models, which minimizes the MSE of parameter estimation The bandwidth and energy constraints are two critical issues for the design of WSNs When the strict bandwidth constraint ... over orthogonal multipleaccess fading channels in wireless sensor networks— optimal and suboptimal estimators Xin Wang∗1 and Chenyang Yang1 School of Electronics and Information Engineering, Beihang...
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báo cáo hóa học:" Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" ppt
... known and unknown CSI and their special cases, and Section introduces the suboptimal estimator In Section 5, we analyze the asymptotic performance and complexity of the presented MLEs and discuss ... observation and channel models, which minimizes the MSE of parameter estimation The bandwidth and energy constraints are two critical issues for the design of WSNs When the strict bandwidth constraint ... over orthogonal multipleaccess fading channels in wireless sensor networks— optimal and suboptimal estimators Xin Wang∗1 and Chenyang Yang1 School of Electronics and Information Engineering, Beihang...
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Báo cáo hóa học: " Research Article Adaptive Channel-Tracking Method and Equalization for MC-CDMA Systems over Rapidly Fading Channel under Colored Noise" doc
... urban area with the RMS delay στ = μs If the coherent bandwidth is defined as the bandwidth over which the frequency correlation function is above 0.9, the coherence bandwidth Bc is approximated to ... method and an enhanced MMSE detector for an MC-CDMA system under the rapidly fading channel and colored noise The proposed RML method can simultaneously estimate the parameters of channel and colored ... or they have other drawbacks, that is, occupying of large bandwidth, inaccuracy in the fast fading channel and under the colored noise, and so forth Therefore, the proposed decision-directed RMLbased...
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Báo cáo hóa học: " Research Article Appropriate Algorithms for EstimatingFrequency-Selective Rician Fading MIMO Channels and Channel Rice Factor: Substantial Benefits of Rician Model and Estimator Tradeoffs" ppt
... E hr,t (l) = bl − bl − E hr,t (l) (5) κ bl = , κ+ 1 κ+ 1 where μl = bl κ/ (1 + κ) According to (4) and (5), the channel Rice factor can vary the mean value and the variance of the channel in the ... frequency-selective fading channels, the elements of the matrix Hl, for all l ∈ [0, L], are defined similar to [45, 46] in the following form: bl κ 1+ j √ + κ+ 1 = bl κ 1+ j √ κ+ 1 bl ×0 κ+ 1 (4) μ σl2 = E ... complexity and performance of the LS, SLS, SSLS, and MMSE estimators As illustrated in Table and Figures and due to lower number of multiplications and additions, the LS-based (LS, SLS, and SSLS)...
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Báo cáo hóa học: " Research Article Super-Orthogonal Block Codes with Multichannel Equalisation and OFDM in Frequency Selective Fading" pdf
... distributed Gaussian random row vector z with mean μ and covariance matrix σz = E[zz∗ ] − μ ∗ , and a Hermitian matrix M, we have − Ez exp −zM(z∗ )T = exp −μM I + σz M μ T , det I + σz M (22) ... schemes in fading channels ith transmit antenna to the jth receive antenna for the nth subcarrier and N j = [η j (1), η j (2), η j (3), , η j (N)]T consists of the noise component η j (n) at ... Communications and Networking Figures and show FER of two-state and four-state super-orthogonal block coding schemes in both FS and FNS fading channels when both OFDM and ME are employed for the FS fading...
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báo cáo hóa học:" Research Article Channel Characteristics and Performance of MIMO E-SDM Systems in an Indoor Time-Varying Fading Environment" pptx
... conducted SISO and MIMO measurement campaigns at a 5.2 GHz frequency band in an indoor timevarying fading environment In our measurement campaigns, the RX was moved while the TX and scatterers ... the raw measurements We examined both SISO and real × MIMO systems For the MIMO case, the antenna spacing was and cm (half- and one wavelength at GHz), and two array orientations (TX-x/RX-x (endfire) ... Autocorrelation and Doppler Spectrum in the Indoor Fading Environment In this section, based on our measured channel data, we examine channel autocorrelation and Doppler spectrum of both SISO and MIMO...
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Báo cáo hóa học: " Research Article Joint Effects of Synchronization Errors of OFDM Systems in Doubly-Selective Fading Channels Wen-Long Chin1 and Sau-Gee Chen (EURASIP Member)2" pptx
... doublyselective fading channels DETAILED DERIVATION OF SIGNAL AND INTERFERENCE POWERS FOR THE BAD-ST1 REGION IN SECTION 3.2 From (17), we can separate the desired signal, and the combined interference and ... editor and anonymous reviewers for their helpful comments and suggestions in improving the quality of this paper REFERENCES [1] J Li and M Kavehrad, “Effects of time selective multipath fading ... 571–578, 2001 [9] M S El-Tanany, Y Wu, and L H´ zy, “OFDM uplink for a interactive broadband wireless: analysis and simulation in the presence of carrier, clock and timing errors,” IEEE Transactions...
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Báo cáo hóa học: " Research Article Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels" ppt
... PPM and PAM over a multipath fading channel with L = 4, m = 0.65, K = 200, G = 100, and Px = −11 dBm is shown in Figures and 8, respectively The relationship between the number of users and the ... illustrate and verify the analytical expressions obtained previously Figures and show the capacity of the multipath fading UWB channel with continuous inputs and outputs with L = and L = 4, respectively ... , i = 2, , M and v1 are Gaussian random variables √ with distributions N(0,1) and N( γ, 1), respectively The expression N(x,1) denotes a Gaussian distribution with mean x and variance Monte...
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Báo cáo hóa học: "Research Article Achievable Rates and Resource Allocation Strategies for Imperfectly Known Fading Relay Channels" doc
... given by hsr = hsd = (2) where xs,t and xr,t are the training symbols sent by the source and relay, respectively, and xs and xr are the corresponding source and relay data vectors The pilot symbols ... Relay-destination channel fading coefficient Relay-destination channel fading coefficient Estimate of the fading coefficient h· Error in the estimate of the fading coefficient h· Variance of random variables Variance ... equations and henceforth, wsr ∼ CN (0, 1), wsd ∼ CN (0, 1), and wrd ∼ CN (0, 1) denote independent, standard Gaussian random variables The above formulation applies to both overlapped and nonoverlapped...
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Báo cáo hóa học: " Research Article Combined Rate and Power Allocation with Link Scheduling in Wireless Data Packet Relay Networks with Fading Channels" pptx
... for the noise intensity, channel gain, and power to set η1 = η2 = 0.025 (for 10−10 mW), and the values of x1 , x2 , and y by the same set {1, 0.1}, M Huang and S Dey 13 3 2.5 2.5 2 1.5 1.5 1 50 ... /(Lηx ) Similarly, for the outgoing link we introduce the bit-energy-to-interference ratio e y (t) = Rc y(t)p y (t) c2 y(t)p y (t) = , Lη y R y (t) R y (t) (2) where c2 = Rc /(Lη y ) and η y ... 0, and we specify the two channel gains by the discrete time Markov chains x(kT) and y(kT), k = 0, 1, 2, Both x(t) and y(t), t = kT, are homogeneous with one-step transition matrices Px and...
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Báo cáo hóa học: " Research Article Cross-Layer Design for Video Transmission over Wireless Rician Slow-Fading Channels Using an Adaptive Multiresolution Modulation and Coding Scheme" pptx
... systems and networks, and image/video compression and communications He is a Member of IEEE and ACM James W Modestino received the B.S degree from Northeastern University, Boston, Mass, in 1962, and ... those using only single-layer coding and uniform MPSK either with or without JSCC The results are demonstrated in Figures 11 and 12 for the AWGN and Rician fading channels, respectively For the ... 1999 P Cherriman, C H Wong, and L Hanzo, “Turbo- and BCHcoded wide-band burst-by-burst adaptive H.263-assisted wireless video telephony,” IEEE Transactions on Circuits and Systems for Video Technology,...
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Báo cáo hóa học: " Research Article Eigenstructures of MIMO Fading Channel Correlation Matrices and Optimum Linear Precoding Designs for Maximum Ergodic Capacity" pdf
... entries and y[k] and n[k] denote the N × received and noise vectors, respectively We assume that the elements of H and n are complex Gaussian random variables with 1/2 variance per dimension, and ... remarks 2.1 FREQUENCY-FLAT FADING CHANNEL System model Consider a MIMO transmission system over a frequency-flat fading channel, using transmitter and receiver equipped with M and N antennas, respectively ... for flat fading channels In this paper, we investigate the channel correlation effects on the capacity of frequency-flat and frequencyselective fading channels from an algebraic viewpoint and develop...
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Báo cáo hóa học: " Outage Analysis of Ultra-Wideband System in Lognormal Multipath Fading and Square-Shaped Cellular " ppt
... for ultra wideband signals in a lognormalfading channel,” in Proceedings of International Workshop on Ultra Wideband Systems (IWUWBS ’03), Oulu, Finland, June 2003 [13] R Giuliano and F Mazzenga, ... corresponding pa10 rameters are dbreak = dd01 and Lw = 10 dB, and for the cat10 egory #2 dbreak = dd02 and Lw = 20 dB, respectively Table includes more parameters and variables chosen for the forthcoming ... Finnish Funding Agency for Technology and Innovation of Finland (Tekes), Elektrobit, the Finnish Defence Forces through CUBS Project, and the Academy of Finland through CAFU Project (no 104783)...
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Báo cáo hóa học: " Joint Frequency Ambiguity Resolution and Accurate Timing Estimation in OFDM Systems with Multipath Fading" doc
... communications and radar, Jun Li et al adaptive filtering, and neural network learning theory and applications He received the Outstanding Youth Award of the Ministry of Electronic Industry and Guanxi ... Beek, M Sandell, and P O B¨ rjesson, “ML estio mation of time and frequency offset in OFDM systems,” IEEE Transactions on Signal Processing, vol 45, no 7, pp 1800–1805, 1997 [6] B Chen and H Wang, ... T M Schmidl and D C Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Transactions on Communications, vol 45, no 12, pp 1613–1621, 1997 [8] M Morelli, A N D’Andrea, and U Mengali,...
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Báo cáo hóa học: " Throughput Analysis of Fading Sensor Networks with Regular and Random Topologies" docx
... α = 4, and Θ = 10, (a) gmax versus d0 and popt versus d0 for a random network; (b) transport capacity gmax d0 for random and regular networks with the same size and node density For random networks, ... capacity gmax d0 of regular and random networks Figure 11a shows gmax versus d0 and popt versus d0 for a random network Figure 11b compares the transport capacity of random and regular networks It ... 40 nodes and α = 4, the numerical results and analytic results from Analytic 1, Analytic 2, and Analytic for (a) the relationship between popt and Θ; (b) the relationship between gmax and Θ this...
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Báo cáo hóa học: " Analysis of a Combined Antenna Arrays and Reverse-Link Synchronous DS-CDMA System over Multipath Rician Fading Channels" doc
... investigate the capacity improvement of the combined AA and RLSTT structure In RLSTT, the when k = m and l = j for l = 0, and (ζl(k,m) )2 = ζ when j k = m and l = j for l > in the appendix The average ... )2 l i 1,i (1) and Y = (β0 ) , for exponential MIP, the pdfs of X and Lr −1 Y are pX (x) = k=1 πk /Ωk exp(−x/Ωk ) and pY (y) = 1/Ω0 exp(− y/Ω0 ), for the case of uniform MIP, X and Y have a chi-squared ... component power to the Rayleigh fading power, the shape of MIP, and the number of antennas In all evaluations, processing gain is assumed to be 128, and the number of paths and taps in RAKE is assumed...
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Báo cáo hóa học: "A Combined Antenna Arrays and Reverse-Link Synchronous DS-CDMA System over Frequency-Selective Fading Channels with Power Control Error" doc
... λk , and Ω(k) = Ω0 ζl(k,m) = ζ0 when j Lr −1 σ2 + mai,l l=1 + × (17) and the total variance equal to the sum of the variance of all the interference and noise terms From (13), (14), (15), and ... Abramowitz and I A Stegun, Handbook of Mathematical Functions, National Bureau of Standards Applied Mathematics Series, Dover Publications, New York, NY, USA, 1965 A Combined Antenna Arrays and Reverse-Link ... Yongin-shi, Korea, in 1998, and the M.S degree in electrical and computer engineering from Yonsei University, Seoul, Korea, in 2000, and is working toward the Ph.D degree in electrical and electronic engineering...
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Báo cáo hóa học: " Performance Analysis of Multiple-Symbol Differential Detection for OFDM over Both Time- and Frequency-Selective Rayleigh Fading Channels" doc
... Rayleigh fading channels with OFDM scenario and ideal interleaving In this paper, the performance of MSDD combined with OFDM is analyzed over time- and frequency-selective Rayleigh fading channels ... , Ξl , and ΦC,l represent the matrices with the (β, γ)th element given by κl (β, γ), ξl (β, γ), and φC,l (β, γ), respectively Then, using (23), (24), (25), (26), (27), (28), (29), (30), and (31), ... Direct application of (39) and (40), however, does not yield a tight bound of the bit error performance for TDMSDD and FD-MSDD over time- and frequency-selective Rayleigh fading channels As shown...
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Design and performance analysis of quadratic form receivers for fading channels
... multipath fading Multipath fading refers to the random amplitude and phase variations of the received signal, which arise from constructive or destructive additions of multiple delayed and attenuated ... 234 Comparison and Numerical Results 235 6.7.1 Nakagami-m fading 236 6.7.2 6.8 Nakagami-m fading 6.6.2 6.7 230 Rician fading ... PEPs of the QR, the CR and the GQR for the USTC-OD versus SNR in slow fading 87 BEPs of the QR, the CR and the GQR for the USTC-OD versus SNR in slow fading ...
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