Báo cáo hóa học: " Research Article Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive Antennas" pot
Báo cáo hóa học: " Research Article Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive Antennas" pot
... pagesdoi:10.1155/2008/254573 Research Article Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive AntennasYindi Jing1and Babak Hassibi21Department of Electrical Engineering ... environment using space-time coding [1–4]. Recently, with the increasing interestin ad hoc networks, researchershave been looking for methods to exploit spatial diversity using the antennas of different ... number of relays is very large. In thissection, analysis on the PEP and diversity for networks with any number of relays is given.As discussed in Section 3, the main difficulty of the PEPanalysis...
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Báo cáo hóa học: " Research Article Throughput Analysis of Band-AMC Scheme in Broadband Wireless OFDMA System" pptx
... overhead in the uplink becomes 10.41% when N=30 and μ = 5. In Figures 3 and 4, note that a diminishing gainis observed as the number of band CQI reports increases.Taking the overhead associated with ... L. J. Cimini Jr., and H. Zheng, “Jointchannel-aware and queue-aware data scheduling in multiple shared wireless channels,” in Proceedings of IEEE WirelessCommunications and Networking Conference ... frequency-selective fading channel in the broadband OFDMA system. In this case, the channelquality of each subchannel is determined by taking theaverage SNR over all corresponding subcarriers. In the band-AMC...
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Báo cáo hóa học: "Research Article Dynamic Resource Assignment and Cooperative Relaying in Cellular Networks: Concept and Performance Assessment" pot
... accesspoint (BS or RS) in the case of single-path relaying. In thecase of cooperative relaying they are jointly served by BS andRS if the received signal power of the two radio access pointsis within ... presented in the context of WiMAX in [24]. The results in [26] have been obtainedfor relays deployed above rooftop and with more relays persector. Increasing the amount of relays increases ... “Performance analysis of transparent relays in 802.16j MMR networks, ” in Proceedings of the 6th International Symposium on Modeling and Optimiza-tion in Mobile, Ad Hoc, and Wireless Networks, (WiOpt...
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Báo cáo hóa học: " Research Article Performance Analysis of SSC Diversity Receivers over Correlated Ricean Fading Satellite Channels" doc
... used diversity reception methods em-ployed in digital communication receivers are maximal-ratiocombining (MRC), equal-gain combining (EGC), selectioncombining (SC), and switch and stay combining ... 0.90.20.30.40.50.60.7Amount of fading (AoF)Figure 2: Amount of fading (AoF) versus the Ricean K-factor forseveral values of the correlation coefficient ρ.show that as K increases, that is, the severit y of the fading ... branches there is a degradation in theachievable diversity gain.The Ricean fading distribution is often used to modelpropagation paths consisting of one strong direct line -of- sight (LoS) signal and...
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Báo cáo hóa học: " Research Article Performance Analysis of Ad Hoc Dispersed Spectrum Cognitive Radio Networks over Fading Channels" potx
... provide fullfrequency multiplexing and diversity due to their spectrumsensing and software defined radio features. In the case of multiplexing, information (or signal) is splitted into Kdata nonequal ... given in (7) which is defined as the LaplacetransformofthePDFoftheSNR[19]. Let the SNR at theend of a single link in the case of conventional single bandspectrum utilization be γL,Tot. In addition, ... asγL,Tot=Ki=1κiα2CPtdl−2FKbT0Rb+ PINIη.(25)Assuming that the destination node is in the center, wetry to calculate all the interference powers transmitting fromall nodes by clustering the nodes into groups in order...
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Báo cáo hóa học: " Research Article Convergence Analysis of a Mixed Controlled l2 − l p Adaptive Algorithm" potx
... Processing, vol. 42, no. 6, pp. 1335–1351, 1994.[10] T. Y. Al-Naffouri, A. Zerguine, and M. Bettayeb, “A unifyingview of error nonlinearities in LMS adaptation,” in Proceedings of the IEEE International ... (43)Second, the following assumption is to be used in the follow-ing ensuing analysis: (A4) The aprioriestimation error ean with zero-mean isindependent of {wn}.The updating scheme of the proposed ... result in zero in thedenominator of expression (41) and therefore will makeμ take any value in the range of positive numbers, acontradiction with the ranges of values for the step sizes of LMS...
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báo cáo hóa học:" Research Article Dynamical Analysis of a Delayed Predator-Prey System with Birth Pulse and Impulsive Harvesting at Different Moments" pdf
... conditions of the globallyattractive prey-extinction boundary periodic solution of the investigated system are obtained.Finally, the permanence of the investigated system is also obtained. Our ... Laboratory of Economic System Simulation, School of Mathematics and Statistics,Guizhou College of Finance and Economics, Guiyang 550004, China2Institute of Mathematics, Academy of Mathematics ... The Dynamics In this section, we will firstly obtain the sufficient condition of the global attractivity of prey-extinction periodic solution of System 2.1 with 2.2.2 Advances in Difference...
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Báo cáo hóa học: " Research Article Performance Analysis of Two-Hop OSTBC Transmission over Rayleigh Fading Channels" ppt
... Li,1Steven D. Blostein,2and Jiay in Qin31Faculty of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China2Department of Electrical and Computer Engineering, Queen’s ... in OSTBCs, substituting the exact relay gain into (11)yields(4),and substituting the ideal relay gain into (11)yields(5).Remark 2. Using maximal ratio combining (MRC) at thedestination, Theorem ... obtaining adequate cov-erage. The concept of relaying signals through interme-diate nodes has been shown to be effective at extendingthe coverage of networks in a power-efficient manner. In addition,...
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Báo cáo hóa học: " Research Article Performance Analysis of the 3GPP-LTE Physical Control Channels" pdf
... (33)where PG= 12 in (33) is the processing gain obtained fromthe spreading code of length 4, and (3,1) repetition code in the case of normal CP [1, 2]. In case of extended CP, amaximum of 4 HI channels ... use of scalable OFDM (orthogonal frequencydivision multiplexing, used on the downlink with channelbandwidth of 1.4 all the way up to 20 MHz.) together with MIMO (multiple input multiple output, ... filter bound of transmit diversity techniques,” in Proceedings of the International Conference onCommunications (ICC ’01), pp. 596–603, Helsinki, Finland,June 2000.Hindawi Publishing CorporationEURASIP...
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Báo cáo hóa học: " Research Article Nonlinear Analysis of the BOLD Signal" ppt
... Imaging, vol. 22, no. 10,pp. 1235–1251, 2003.[5] M. Lindquist and T. Wager, “Modeling the hemodynamicresponse function using inverse logit functions,” in Proceedings of Human Brain Mapping ... to inferring the hiddenstates we also provide for inference on the parameters. Thisinvolves augmenting the state vector with the parametersand treating them as slowly varying states (as in ... approaches). In conclusion, we presented a nonlinear filtering ap-proach, which deals with the nonlinear propagation of theprobability density function (pdf) in a straight, deterministicsample points...
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