Báo cáo hóa học: " Performance Analysis of Multiple-Symbol Differential Detection for OFDM over Both Time- and Frequency-Selective Rayleigh Fading Channels" doc

... Corporation Performance Analysis of Multiple-Symbol Differential Detection for OFDM over Both Time- and Frequency-Selective Rayleigh Fading ChannelsAkira IshiiDepartment of Communications and Systems, ... 2003The performance of orthogonal frequency-division multiplexing (OFDM) system with multiple-symbol diﬀerential detection (MSDD) is analyzed over both time- and frequency-selective Rayleigh fading ... application of (39 )and( 40), however, does notyield a tight bound of the bit error performance for TD-MSDD and FD-MSDD over time- and frequency-selective Rayleigh fading channels. As shown in [6] for...

Báo cáo hóa học: " Performance analysis of distributed ZF beamforming in the presence of CFO" pptx

... InFigure 3, we display both the analytical (dashed line) and simulated SNR gain for a fΔ= 2 ppm, Nt=2 ,and for various transmit symbols (Tp) for both a fixed and an uniform residual CFO. We ... 2011:177http://jwcn.eurasipjournals.com/content/2011/1/177Page 6 of 13RESEARCH Open Access Performance analysis of distributed ZFbeamforming in the presence of CFOYann YL Lebrun1,2*, Kanglian KZ Zhao3, Sofie SP Pollin2, Andre AB Bourdoux2, ... The computation of the beam-forming weights can be decomposed into two steps: nullbeamforming and maximal energy beamforming. Wefocus on the computation of the weights for Tx1,andasimilar...

Báo cáo hóa học: " Performance analysis of spectrum sharing mechanisms in cognitive radio networks" pptx

... buffer size, and number of available channels on performance metrics. For comparison, the performance of traditionalpreemptive spectrum-sharing mechanism has also beenanalyzed and the results ... groups are interms of lp and μp.Forthedurationofaspecificnum-ber of PUs, the states of SUs achieve equilibrium. Allthe transitions within a group are in terms of ls and μs, and the steady-state ... Q and total number of channels N.Allofthesimulation results show that t he NP mechanism signifi-cantly improves the QoS of SUs with an acceptable QoSdegradation of PUs. The performance analysis...

Báo cáo hóa học: " Performance analysis of massively parallel embedded hardware architectures for retinal image processing" pot

... 2011:10http://jivp.eurasipjournals.com/content/2011/1/10Page 10 of 17provide random access or FIFO queues both for instruc-tions and for data to i ncrease performance and flexibility.A group of 2 CU and 2 RU is called Brick. Bricks areconnected ... is one of the pur-poses of the platform, to offer a high -performance device keeping prototyping rapid and closer to software.Using HDL language to develop complex architecturesor software-to-hardware ... integrating modules for specific solu-tions (both softcore and hardcore) to facilitate the use and debugging of the FPGAs and to reduce design time.Furthermore, the capabilities of its internal...

Báo cáo hóa học: " Performance analysis of OFDM modulation on indoor broadband PLC channels" ppt

... because the OFDM symbol rate is reduced without proﬁt [12].Therefore, there exist optimum values for both thenumber of carriers and the cyclic preﬁx length.The performance of OFDM has largely ... compact form because of the periodic beha-vior of the channel response. We evaluate the performance of broadband OFDM systemsonindoorpower-linechannelsasafunction of the number of carriers and ... middle of the useful part of the ℓth OFDM symbol and Δhnℓ½maccounts for the time variation of the channel duringthe nth sample of the ℓth symbol with respe ct tohℓ[m].Figure 1 PDP and...

Báo cáo hóa học: "Performance Analysis of the Blind Minimum Output Variance Estimator for Carrier Frequency Offset in " pot

... Section 5 .2. OFDM SYSTEMS OFDM is a form of mutlicarrier modulation and consists of a number of narrowband orthogonal subcarriers trans-mitted in a synchronous manner. The mth OFDM datablocktobetransmittedcanbedeﬁnedass(m)= ... theoretical mean and variance of the MOV estima-tor and examine the performance analytically. We also eval-uate the performance of the MOV estimator over frequency-selective fading channels and apply ... only one OFDM block is used for the estimation. Thus,the proposed MOV estimator is also suitable for burst trans-mission.4.2. Performance over frequency-selective fading channels Over frequency-selective...

Báo cáo hóa học: " Performance Analysis of Adaptive Volterra Filters in the Finite-Alphabet Input Case" potx

... approach. Analysis of Adaptive Volterra Filters. The Finite-Alphabet Input Case 2717From the analysis of this recursion, all mean square per-formances in transient and in steady states of the ... ﬁnite states{1, 2}, and a probability transition matrix P =1/21/21/21/2. Thismodel for the transmitted signal is widely used, especially for the performance analysis of trellis-coded modulation ... presented an exact and complete the-oretical analysis of the generic LMS algorithm used for theidentiﬁcation of time-varying Volterra structures. The pro-posed approach is tailored for the ﬁnite-alphabet...

báo cáo hóa học:" Dynamical analysis of a biological resource management model with impulsive releasing and harvesting" pdf

... is the per-capita rate of predation of the predator,d > 0 is the death rate of predator, c > 0 denotes the product of the per-capita rate of predation and the rate of conversing prey into ... existence and uniqueness of solutions of (2.2) is guaranteed by the smoothness properties of f, which denotes the mappingdeﬁned by right-side of system (2.2) (see Lakshmikantham [4]).Before we ... 1Dynamical analysis of a biological resource managementmodel with impulsive releasing and harvestingJianjun Jiao∗1, Lansun Chen2 and Shaohong Cai11School of Mathematics and Statistics,Guizhou...

báo cáo hóa học:" Molecular analysis of the apoptotic effects of BPA in acute myeloid leukemia cells" potx

... http://www.translational-medicine.com/content/7/1/48Page 2 of 8(page number not for citation purposes)caspase dependent and occurred by activation of extrinsic and intrinsic cell death pathwaysmodulating both FAS and TRAIL and by inducing ... induces modulation of ERK and AKT phosphorylation and increase of histone acetylation in NB4 cellsFigure 5BPA induces modulation of ERK and AKT phosphor-ylation and increase of histone acetylation ... treated for 2, 4 and 6 days with 60 μM BPA. ERKs expression levels account for equal loading); (D) Western blot analysis of the expression levels of ER alpha in NB4 cells treated for 2, 4 and 6...

báo cáo hóa học: "Rasch analysis of the Multiple Sclerosis Impact Scale (MSIS-29)" pot

... [34,36].The sample size for Rasch analysis varies according to anumber of parameters, including the degree of requiredprecision of the person and item estimates, and the target-ing of the sample. A ... Sub-stantial disordering of thresholds was identified for many of the MSIS-29-PHYS items, and minor disordering wasidentified for some of the MSIS-29-PSYCH items. A reduc-tion in number of response categories, ... thresholds of all 29 items were checked for disorder-ing. As a large proportion of items (18 of the 29 items)were found to have some level of disordering, a global res-core of items was performed...

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