performance of topical therapeutic systems

... mechanism for the comparison of the performance of major rating agencies and that of other credit assessment systems, such as the internal ratings-based systems of commercial banks under the ... results in one of the main contributions of our work, i.e the statistical deduction of an ex ante benchmark of a single “A” rating grade in terms of probability of default The second aim of this paper ... central banks”, Task Force of the Market Operations Committee of the European System of Central Banks, July 2007 65 “The performance of credit rating systems in the assessment of collateral used in...

Ngày tải lên: 22/03/2014, 20:20

... verification of the impact of physical level solutions on the TCP performance In Figure 5, the BER and normalized throughput as a function of Eb /N0 (dB) are shown in different types of correlated ... value of β (minimizing the BER) depends on many parameters: the channel model, the system loads, and the mean SNR Note also the impact of an accurate choice of β on the performance in terms of throughput ... TCP levels, of different combining techniques for the downlink of MC-CDMA systems By means of an integrated platform carefully taking into account all main aspects affecting the quality of service...

Ngày tải lên: 22/06/2014, 06:20

... literature review of performance analysis of manufacturing systems, especially systems with quality issues The difficulties and problems in improving the performance of such systems are reviewed ... parameters of two stage systems 42 3.3 Simulation results of the two stage systems 43 3.4 Parameters of multistage systems 50 3.5 Comparison of results ... Validation of the proposed methods for evaluating the performance of two stage systems 3.3.4 40 Quantitative analysis on the effects of sampling plans on system performance...

Ngày tải lên: 09/09/2015, 17:58

... of RAKE fingers) 6.6 Performance of coherent combining with RAKE reception in single user environment 6.7 Performance of coherent combining with RAKE reception in multi user environment 6.8 Performance ... combining technique to improve the performance of an UWB-IR system and its performance is evaluated by comparing it with some other existing systems vi LIST OF FIGURES 2.1 Typical TH –UWB signal ... wave form of PAM signal (enlarged) 3.6 Theoretical and simulation performance of TH-PPM compared for Ns = and N s = , with Tc = 8ns and δ = 1.5ns 3.7 Theoretical and simulation performance of TH-PPM...

Ngày tải lên: 05/10/2015, 22:04

... generating systems based on renewable energies [3], however, the modeling, simulation and analysis of a large variety of systems based on renewable energy and to manage these systems, the software ... the size and state of battery charge (SOC), the terminal voltage or currents absorbed by consumers One of the advantages of MATLAB software is that libraries offer a wide range of basic components ... wind speed of 12m/s which is rated speed Table shows the standard classification system for wind turbines and effect of diameter of power rating of wind generating [8] The diameter of swept area...

Ngày tải lên: 05/09/2013, 16:10

... thesis focuses on performance analysis of network MIMO systems Because Network-MIMO is an enhancement model of the original MIMO systems, we first analysis the theoretical of MIMO techniques ... signal are often presented by “black boxes” 2.2.1 MIMO systems Model We consider a MIMO systems with a transmit array of MT antennas and a receive array of MR antennas The block diagram of such ... reasons for this performance gap include the presence of co-channel interference (CCI), diminishing the effect of MIMO communications, and the limited number of degrees of freedom offered for inter-cell...

Ngày tải lên: 26/11/2013, 20:49

... derating adjusted two-state model of a generating unit is an approximation which provides a pessimistic appraisal of the load carrying capabilities of a unit or a system of units A detailed multistate ... number Of days or hours that load will be curtailed The LOEE on the other hand estimates the expected amount of energy curtailed These indices not provide any indication of the number of times ... to provide a centralized source of BES delivery point performance data at the national level which will allow utilities to compare their performance with that of other Canadian utilities The...

Ngày tải lên: 03/01/2014, 19:36

... investigate the performance of MIMO E-SDM systems in actual environments, we first describe the systems in Section Then, a procedure of applying measured data for evaluation of the system performance ... relatively unimportant Both of [22, 23] did not consider the Doppler spectrum in the case of the LOS condition and the effect of the spectrum on the performance of MIMO systems Also, array configurations ... = 31 Hz of the SISO case when the RX moves along MIMO E-SDM Systems Before investigating the performance of MIMO E-SDM systems in actual time-varying fading environments, the concept of a MIMO...

Ngày tải lên: 21/06/2014, 18:20

... performance of the bestrelay selection scheme and the regular cooperative diversity in terms of the BER and Cout for different values of M To make the comparisons fair, the transmitted power of ... that of the best-relay selection scheme for M > In order to find the other statistics of the total SNR, we have to find the PDF of γtot , which can be found directly by finding the derivative of the ... two moments of γtot can be used in order to evaluate the amount of fading (AF) at the destination [13, Chapter 1] The AF is defined as the ratio of the variance to the square mean of γtot (AF...

Ngày tải lên: 21/06/2014, 22:20

... rates of an 8PSK GSC system with different combinations of M and Mc Note that the proposed evaluation method of the cutoff rate is very simple and efficient as compared with the integral method of ... Figure 2: Cutoff rate of 8PSK-coded GSC with different number of diversity orders in Nakagami fading with m = Figure 1: Cutoff rate of coded GSC with M = and different number of selected diversity ... new evaluation method for the cutoff rate of coded GSC systems In addition, we derived a new union bound on the error probability of coded coherent GSC systems over Nakagami fading channels Results...

Ngày tải lên: 21/06/2014, 22:20

... between HMM and CP-OFDM about ∼ dB at SNR = 30 dB and CFO in the range of −0.5 ∼ 0.5 Effects of both CFO and TO on the SINR performance of hexagonal multicarrier systems and CP-OFDM systems at SNR ... transmission systems obtain lower energy perturbation, hence outperform OFDM and LOFDM systems from the robustness against channel dispersion point of view Synchronization is considered as a key factor of ... signal-to-interference-plus-noise ratio (SINR) performance low bound on the effects of Doppler spread in OFDM system is studied in [18] In this paper, our attention is focused on the analysis of the effects of CFO and TO on...

Ngày tải lên: 21/06/2014, 22:20

... a BER of 10−1 , and no amount of additional iterations can improve the performance of this receiver In contrast, a highly loaded system performance of the IA receiver reveals that more performance ... BER of 10−3 at SNR of 1.4 dB while the PA receiver maintains the same performance at an SNR value of 1.6 dB for the 2×2 diversity system The IA advantage in terms of capacity for low-loaded systems ... Iterations Figure 4: Performance of PA and IA schemes as a function of BER per SNR for a system with active users BER 1E − 03 10 15 PA, users PA, 15 users Figure 6: Performance of PA and IA schemes...

Ngày tải lên: 21/06/2014, 23:20

... r is the vector of the aiming point, as is the vector −→ − −→ − of SPP, POI is the vector of POI, PCi is the vector of the peak −−→ −− carrier value, and PCINR is the vector of the peak CINR ... configuration of single HAPs point with the terrestrial systems 150 50 50 Distance (km) 100 Distance (km) 100 Max CINR for configuration of single HAPs point with the terrestrial systems −50 −50 ... CINR contour plot of single HAP with multiple antenna beams with terrestrial systems (b) Final CINR contour plot of single HAP with multiple antenna beams with terrestrial systems after applying...

Ngày tải lên: 21/06/2014, 23:20

... the jth row of F, being equal to f j = eH H, j and e j is the jth column of matrix E Recognizing that the ith row of matrix F can be written as a linear combination of the rows hi of the full ... Extension of the algorithm for RS-ASF CRS-ASF ≥ log2 det IMT + ρ H H H AA H MT (47) Proof of this result and indications for the tightness of the bound are provided in Appendix B Thus, in the case of ... results that demonstrate the capacity performance of receive ASF technique, the tightness of the ergodic capacity bounds derived in Section 3, and the performance of the proposed algorithm 20 Ergodic...

Ngày tải lên: 22/06/2014, 06:20

... to improve the performance of UWB-OFDM system with low complexity We adopt the channel model similar to [12] which includes the effects of multipath clustering and Poisson arrival of multipath components ... component of the cth cluster, Tc is the delay of the cth cluster, and τ c,l is the delay of α(c, l) relative to Tc According to (1), the total number of clusters is C + and the total number of channel ... transmitter, CDD makes Nt copies of a transmit stream after IFFT processing of a coded symbol stream, where Nt is the number of transmit antennas At each antenna, each copy of the OFDM symbol is cyclically...

Ngày tải lên: 22/06/2014, 06:20

... deviation of slow fading Average number of paths Maximum number of paths Standard deviation of the attenuation of the delayed paths with respect to the direct path Average attenuation of the delayed ... Because of this aspect and because of the results of Figures and 8, it can be concluded that half of the wavelength is the best suitable antenna spacing Next, Figure shows the performance of a sectorized ... see a sum of resolvable ˆ distorted versions of the transmitted signals sk (t) of users k = 0, , K − The complex baseband representation of the antenna array output signal vector of base station...

Ngày tải lên: 23/06/2014, 01:20

... National University of Singapore and Imperial College of Science, Technology and Medicine, University of London, respectively He is currently an Assistant Professor in the School of Electrical and ... the subcarrier fading power of other users Thus the BER of an MC-CDMA uplink channel conditioned on MC-CDMA Uplink Performance in Correlated Multipath Channels the set of subcarrier fading amplitudes ... number of subcarriers is usually large (e.g., 64 in IEEE 802.11a wireless LAN systems) and the subcarrier fading gains are usually correlated 2.2 Simplification of BER formula The presence of Nc1,...

Ngày tải lên: 23/06/2014, 01:20

... thesis focuses on performance analysis of network MIMO systems Because Network-MIMO is an enhancement model of the original MIMO systems, we first analysis the theoretical of MIMO techniques ... reasons for this performance gap include the presence of co-channel interference (CCI), diminishing the effect of MIMO communications, and the limited number of degrees of freedom offered for inter-cell ... constant dB Configure of antenna system Tx=1; Rx=1 Length of random message from each user L=64*2*20 Square area in meters of a cell 36 m2 Number of wireless cell Number of user Number of APs Center...

Ngày tải lên: 25/03/2015, 11:08

... communications Most of the works on power control study the performance limits of communication systems in terms of ergodic capacity or information outage probability [2–4] The performance limits of systems ... DESIGN AND PERFORMANCE ANALYSIS OF EFFICIENT WIRELESS SYSTEMS WANG PEIJIE (M.Sc., National University of Singapore) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ELECTRICAL ... non-relaying systems from various perspectives 22 2.2 Relay Communication Systems From information theoretic point of view, the performance analysis of relay communication systems refers to analyze the performance...

Ngày tải lên: 10/09/2015, 08:25