Báo cáo hóa học: " Random Sign Repetition Time-Hopping UWB with Multiuser Detection" ppt

... modified random sign repetition TH-PPM with short TH sequence, MMSE detector; (b) TH -UWB with the random sign repetition TH-PPM w ith long TH sequence, MMSE, and differentTH sequence for each bit. multiuser ... of multiuser detection. The modi-fied TH-PPM signaling is called the random sign repetition TH-PPM signaling. Through some analysis and simulationresults, we can observe that the random sign repetition ... paper, wedo not pursue it for further generalization.3. RANDOM SIGN REPETITION TH-PPM SIGNALING3.1. Random sign repetition The performance of multiuser detection depends on the ma-trix Uq. In...

Báo cáo hóa học: " Autonomous indoor wayfinding for individuals with cognitive impairments" pptx

... difference with and without technology is statistically significant.Furthermore, we designed comparative experiments totest the efficacy by observing behaviors on an alternatingtreatments design ... Routing for individuals with multiple special needs. Routing for individuals with multiple special needs: users with cognitiveimpairments, wheelchair users, and users with low visionChang et ... research for individuals with cognitive impairments. Then, prototype design is pre-sented. Implementations and results are shown with fol-low-up discussions. The paper concludes with somefinal remarks.2....

Báo cáo hóa học: " Research Article Secure Arithmetic Coding with Error Detection Capability" ppt

... symbols with random lengths andplaces them in random locations. The ﬂowchart of thisproposed technique is shown in Figure 3. While the conceptof this scheme can be applied to a source alphabet with ... proposedmethod, a random length of forbidden symbol which is produced with a key is used in each recursion. The dummy symbol isdivided into two dummy symbols with a key and then is placed in random positions ... PRNG. The bits of the generated random sequence are used as an encryption key in eachrecursion. In practice, the random sequence is taken onthe values 0 and 1 with probability of .5 which is...

Báo cáo hóa học: "Research Article Load Balancing Routing with Bounded Stretch" pptx

... path). Random Networks. We also test the performance of CSR with random networks. 81 nodes are randomly deployed inthe ﬁeld with transmission range R set to 4. We run thesimulation for 100 random ... LCSR via 3D grid and random networks. For gridnetwork, we use a network with 64 nodes in a 4×4 ×4 gridsand set Tr to 8. For random network, we generate 50 random networks with 64 nodes in a ... range (Tr) is set to 4.5. For 3D random networks, 100 nodes are randomly distributed in the 20×20×20 cube with each node’s Tr set to 6. We run the simulationfor 100 random networks and take the...

Báo cáo hóa học: " Nonregenerative Dual-Hop Cooperative Links with Selection Diversity" ppt

... dividedinto two signaling intervals: in the ﬁrst signaling interval, ter-minal S communicates with the relay and the destination ter-minal, while in the second one, only the relay communicates with terminal ... destination terminal combinesthe received sig nals using a SC. Assuming that S is transmit-ting a signal with an average power normalized to unity, theinstantaneous equivalent end-to-end SNR of the ... of the relay. Since αiis modeled asNakagami-m random variable (RV), the instantaneous SNR,γi= α2i/N0,i, is a gamma distributed RV with PDF given byfγi(γ) =mmiiγmiiΓmiγmi−1exp−miγγi,(2)where...

Báo cáo hóa học: " Research Article Communication Timing Control with Interference Detection for Wireless Sensor Networks" potx

... from node 2 with signal strength larger thanPc(dBm)1710616273815+Esir131491211154P9 1PcPmin(b) A case that node 1 receives control mes-sage from node 9 with signal strength ... communication with node x, thesignal strength of which is P9 x>Pc. When node 1 tr ansmitsto a peripheral node, such as node 2, the transmission fromnode 1 may interfere with the desired signal ... shown inFigures 8(c) and 9(c).Figure 9 shows performance diﬀerence with/ without in-terference node detection. In the case without interferencenode detection, in spite of phase overlap rate...

Báo cáo hóa học: " Impact of Channel Estimation Errors on Multiuser Detection via the Replica Method" pot

... multiple-access with error control coding,” EuropeanTrans. Telecommunications, vol. 9, no. 5, pp. 419–426, 1998.[6] S. Verdú and S. Shamai, “Spectral efficiency of CDMA with random spreading,” ... DS-CDMA with and without decision feedback,”in Proc. Conference on Information Sciences and Systems,TheJohns Hopkins University, Baltimore, Md, USA, March 2003.[17] D. Guo and S. Verdú, Multiuser ... variance.where the random variable P is the received power andthe expectation is with respect to the distribution of P.When the receiver is unaware of the fading and uses equal-power MMSE MUD, the multiuser...

Báo cáo hóa học: "Error Sign Feedback as an Alternative to Pilots for the Tracking of FEXT Transfer Functions in Downstream VDSL" pptx

... Transactions on Signal Processing. His research interestsare in the general area of system theory applied to signal process-ing, and in particular algebraic methods for array signal processingand signal ... similar to an LMSalgorithm, or more precisely to the sign LMS [15]. Howeverit is very diﬀerent because, in the sign- LMS algorithm, the sign operation is taken on the “prediction error” computedbetween ... denote by Z= sign( Y), the set of received signsof the symbol errors coming from the diﬀerent lines. Theyare the observations on which the estimation will be based.The error sign sample received...

báo cáo hóa học:" An intron 9 containing splice variant of PAX2" pptx

... thenblocked with 1%BSA in PBST (1× PBS, 0.1% Tween) over-night at 4°C. Blots were then probed with rabbit anti-PAX2 primary antibody (Zymed, San Francisco, USA) at1:1000 dilution. After washing with ... incubated with anti-rabbit IgG antibody conjugatedto horseradish peroxidase (HRP) at 1:5000 dilution(Amersham, UK). Signal detection was visualized usingECL chemiluminescence reagent (SuperSignal ... deaminase(PBGD) expression. Statistical significance was testedusing SPSS 15.0 software. For comparison of PAX2 intron9 specific mRNA expression levels significance was esti-mated by the 2-sided...

báo cáo hóa học:" A MIF haplotype is associated with the outcome of patients with severe sepsis: a case control study" pdf

... allele with tuberculosis and (ii) of the -173 C allelein combination with the -794 CATT7 microsatellite with severe malarial anemia, respectively [34,35]. These find-ings seem to be in line with ... Patients with severe sepsis were studied (121 maleand 48 female). 94 healthy blood donors and 183patients after abdominal surgery without post-operativesigns of infection or inflammation, without ... power: 1-β = 0.96) forTable 1: Baseline characteristics of patients with severe sepsis and patients with abdominal surgery without signs of infection or inflammation (* unpaired t test, ** Fisher's...

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