performance analysis of parallel programs

... case of symmetric multiprocessing) [36] They are focused on exploiting the functional and temporal parallelism of the algorithms instead of the spatial parallelism (as happened with the Pixel -parallel ... profiling make the development much faster than in other platforms This is one of the purposes of the platform, to offer a high -performance device keeping prototyping rapid and closer to software ... high performance can be achieved even in pure-software implementations Its natural parallelism eases hardware implementations and it is one of its main advantages Figure shows the main blocks of...

Ngày tải lên: 20/06/2014, 22:20

... 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 ... component, each of the other three components has, as input parameters, the specific primary source of energy and, through interconnection with different types of measurement and display blocks of MATLAB,...

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 ... 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: 26/11/2013, 20:49

... accessed out -of- bounds The details of this analysis are given in Chap 11, which presents the string buffer analysis as a refinement of the basic analysis of C that is described in the first part of the ... While the aspects of soundness and efficiency need to be addressed before an analysis is implemented, the precision of an analysis (or the lack thereof) often manifests itself when the analysis is run ... Value-Range Analysis of C Programs Axel Simon Value-Range Analysis of C Programs Towards Proving the Absence of Buffer Overflow Vulnerabilities 123 Axel Simon...

Ngày tải lên: 19/03/2014, 14:05

... of the event of interest was dened as Pr [ ] = is the number of favorable outcomes (samples points of ) If the where number of outcomes of an experiment is not nite, this classical denition of ... sample space An event consists of a set of sample points An event is thus a subset of the sample space The complement of an event consists of all sample points of the sample = \ Clearly, ( ) ... series Ê Ô of around = is expressed as function of the moments of , Ê around = given whereas in the discrete case, the Taylor series of by (2.18) Ê expressed in terms of probabilities of This...

Ngày tải lên: 01/06/2014, 11:02

... cyclic prefix of 0.8μs and the accuracy of the CFO estimation is typically of 0.3-1 ppm of the carrier frequency The 3GPP-LTE system works Page 11 of 13 with a carrier frequency of 2.6 GHz and ... is of approximately 0.2 dB less than that of the SU transmit-MRC scheme with four transmit antennas, as expected from Equation (21) 5.2 Performance of coordinated beamforming with frequency offset ... number of receivers, N t is the number of transmit antennas at each transmitter, and Nr is the number of antennas at each receiver Page of 13 5.1 Performance of cooperative beamforming: ideal case...

Ngày tải lên: 20/06/2014, 22:20

... of channels N All of the simulation results show that the NP mechanism significantly improves the QoS of SUs with an acceptable QoS degradation of PUs The performance analysis of these two spectrum-sharing ... capacity of secondary users in a cognitive radio network, in Proceedings of IEEE Sarnoff Symposium 2009, New Jersey, USA, 1–5 (March 2009) SM Kannappa, M Saquib, Performance analysis of a cognitive ... force-termination probability of SU PFT-su, mean system delay of SU T Delay-su , mean waiting time of PU t wait-pu , and blocking probability of PU P BL-pu The expressions of these metrics are described...

Ngày tải lên: 20/06/2014, 22:20

... compact form because of the periodic behavior of the channel response  We evaluate the performance of broadband OFDM systems on indoor power-line channels as a function of the number of carriers and ... in a mobile environmnent, in Proceedings of the IEEE VTC, 820–824 (1995) 11 H Steendam, M Moeneclaey, Analysis and optimization of the performance of OFDM on frequency-selective time-selective ... evaluate the performance of the OFDM modulation Main conclusions are summarized in Section Channel model In most countries, indoor power networks have a branched structure composed of a set of wires...

Ngày tải lên: 20/06/2014, 22:20

... effects of fading, number of dispersed bands, modulation, and coding on the performance of dispersed spectrum cognitive radio systems The results show that the effects of fading, number of dispersed ... node topology effects In the first part of this paper, the performance analysis of dispersed spectrum cognitive radio systems is conducted in the context of communications applications, and average ... function of MGF, and the MGF of the dispersed spectrum CR system over Nakagami-m channel is given in (7) which is defined as the Laplace transform of the PDF of the SNR [19] Let the SNR at the end of...

Ngày tải lên: 21/06/2014, 05:20

... steady-state MSE analysis of SPU-NLMS in [19] was based on transient analysis Also this paper has not presented the theoretical performance of SPU-APA In [21], the tracking performance of some SPU ... in [18] present mean square convergence analysis of the SPU-NLMS for the case of white input signals The more general performance analysis for the family of SPU-NLMS algorithms in the stationary ... diagonal of A(n) matrix for each iteration in the SPU-APA is determined by the indices of F Table summarizes the parameters selection for the establishment of SPU-APA Tracking Performance Analysis of...

Ngày tải lên: 21/06/2014, 08:20

... (28) Proof of Lemma Differentiating (13), where γth = γ with respect to γ and using the expression for the modified Bessel function derivative in [15, Equation (8.486.12)]yield (28) Proof of Theorem ... The diversity order of a two-hop AF relay system is min{NS , ND } when an OSTBC strategy is employed at the source Proof Since the diversity order of the system describes performance at asymptotically ... simulations also compare system performance between the proposed relaying system and a MIMO pointpoint system and assess performance as a function of location of the relay between the source...

Ngày tải lên: 21/06/2014, 11:20

... always mapped into the first OFDM symbol of the first slot of each subframe For the normal CP duration, the PHICH is also mapped into the first OFDM symbol of the first slot of each subframe On the other ... erfc⎝ ⎠ + erfc⎝ ⎠ 2 σu σu (m) zk k=1 K 3.2 Analysis of CFI with Repetition Coding In this section, we compare the performance of the (32,2) block code of Table used for CFI encoding with a simple ... spreading code of length 4, and (3,1) repetition code in the case of normal CP [1, 2] In case of extended CP, a maximum of HI channels are allowed in a PHICH group, and hence a spreading code of length...

Ngày tải lên: 21/06/2014, 11:20

... field of Figure Results and Analysis Following a series of experimental tests and numerical measurements using benchmarking software, published literature [14–16] discusses the performance of the ... the configuration of one of the cores of the Opteron along with the number of execution units and the instruction queue length The lower text window depicts the details and actions of the pipeline ... therefore a reflection of the performance of that architecture Figure 10 is a graph of the “Latency per Task” results for each configuration This graph is plotted using the total number of clock cycles...

Ngày tải lên: 21/06/2014, 18:20

... The number of slices of the floating-point adder varies from 31% (FP12: 173/556) to 45% (FP32: 486/1077) of the total size of the neural network as shown in Table 4.1.3 Power The results of power ... applications The result of Table is used in the second column (FPU64(PC)) of the Table 10 Table 10 shows the detection rate error (i.e., |detection rate of FPU64 (PC software)—detection rate of reducedprecision ... S Choi, and V Prasanna, Analysis of high -performance floating-point arithmetic on FPGAs,” in EURASIP Journal on Embedded Systems Proceedings of the 18th International Parallel and Distributed...

Ngày tải lên: 21/06/2014, 20:20

... Here the performance of RASCAAL is analysed taking into account the effects of the underlying MAC This is necessary in order to illustrate the effects of security protocols in the context of the ... in an average saving of 10.3% and a maximum saving of 12.5% 4.5 RASCAAL Overall Performance Discussion From the analysis presented in this paper, it is clear that RASCAAL’s performance suffers principally ... authentication dialogue A detailed description of the BAN logic analysis of RASCAAL is presented in previous research by the authors [15] This analysis illustrated that RASCAAL can successfully...

Ngày tải lên: 21/06/2014, 23:20

... The structure of the transmitter for user k is shown in Figure A block of P incoming bits is first serial-to -parallel converted into P so-called parallel- bit branches The bit on each parallel- bit ... function of γ and is given by [30] N −1 nt = (25) Assuming that any bit can be sent via any of the P parallel branches with equal probability, the final BER of the MFMRC receiver (the initial stage of ... instead of simply implementing a heuristic algorithm, we perform a thorough analysis on the system performance and obtain a simple closed form expression for the bit-error rate (BER) of the APIC...

Ngày tải lên: 22/06/2014, 19:20

... values of the correlation coefficient ρ Δ The AoF, defined as AoF = var(γssc )/γ2 , is a unified meassc sure of the severity of the fading channel [2] and gives an insight to the performance of the ... probability, Pe (γ), over the PDF of γssc [29] P se = CHANNEL CAPACITY (CC) In this section a detailed performance analysis, in terms of Pout , ASEP, ASNR and AoF, for SSC diversity receivers ... expressed in terms of first- and second-order moments of γssc as μγssc (2) − μγssc (1)2 (29) PERFORMANCE EVALUATION RESULTS Using the previous mathematical analysis, various performance evaluation...

Ngày tải lên: 22/06/2014, 19:20

... form of SIR than (20) and therefore, our analysis presents a comprehensive view of the behavior of STBC data in the presence of carrier offset Further, Manav R Bhatnagar et al the expression of ... matrix 2.2 Estimation of carrier offset and imperfect compensation of the received data Maximum likelihood (ML) estimation of transmitted data requires the perfect knowledge of the carrier offset ... resp.) view of the behavior of OSTBC imperfect knowledge of carrier offset in MIMO channels Figures and show the analytical and experimental, probability of error plots with different values of MSE...

Ngày tải lên: 22/06/2014, 19:20

... methods While the concept of channel equalisation does present benefits in terms of user error performance, it inevitably leads to an increase in the level of complexity of the system Increased ... representations of a second derivative Gaussian monocycle with centre frequency of 3.9 GHz This time is adjusted to permit a portion of the multipath components to pass before the transmission of the ... transmitter side Estimation of the response can be achieved through the use of the theory of reciprocity for antennas and electromagnetic propagation It states that the outputs of nonlinear antennas...

Ngày tải lên: 22/06/2014, 19:20

... Section where In the presence of CFO, the received signal, after DFT demodulation, is given by OFDM SYSTEMS OFDM is a form of mutlicarrier modulation and consists of a number of narrowband orthogonal ... Ts 0.2 0.3 0.4 0.5 Performance analysis of the MOV estimator For the MOV estimator, we need to obtain the expected value of |dk | for each trial value of φe The expectation of |dk | is approximated ... [13], the performance of the MOV estimator is obtained by simulations The main objective of this paper is to derive the theoretical mean and variance of the MOV estimator and examine the performance...

Ngày tải lên: 22/06/2014, 23:20