Báo cáo hóa học: " Frequency domain equalization space-time block-coded CDMA transmission system" pdf
Báo cáo hóa học: " Frequency-domain equalization for OFDMA-based multiuser MIMO systems with improper modulation schemes" docx
... Fre-quency -domain equalization (FDE) is commonly used forOFDMA. This includes frequency domain linear equaliza-tion (FD-LE) [4], decision feedback equalization (DFE)[5,6], and the more recent turbo equalization ... for orthogonal frequency division multiple access-baseduplink multiuser multiple-input multiple-output systems. The numerical results show that the proposed frequency- domain equalization schemes ... multiple-input multiple-output (MIMO), frequency- domain equalization 1 IntroductionMultiple-input multiple-output (MIMO) techniques incombination with orthogonal frequency division multipleaccess...
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Báo cáo hóa học: " Frequency domain equalization space-time block-coded CDMA transmission system" pdf
... Open Access Frequency domain equalization space-time block-coded CDMA transmission systemCésar Augusto Medina*and Raimundo Sampaio-NetoAbstractIn this work we propose a space-time block-coded ... MC -CDMA. IEEE Trans Signal Process. 55(10),4737–4751 (2007)doi:10.1186/1687-1499-2011-80Cite this article as: Medina and Sampaio-Neto: Frequency domain equalization space-time block-coded CDMA ... transmission system exhibits good performance in terms of bit error rate when compared topreviously proposed STB C CDMA transmission systems.Keywords: frequency domain equalization (FDE), space-time...
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Báo cáo hóa học: " Frequency Domain Detectors in Different Short-Range Ultra-Wideband Communication Scenarios" ppt
... determines the valueof the bit received by the th user.4.2. Frequency domain detectionChannel equalization in the frequency domain [8]isapos-sible solution to the IPI which is caused by ... haveto be taken into account. Frequency domain equalization (FDE) [8], proposed andstudied for a single-carrier single-user environment, is sim-ply the frequency domain analog of conventional ... “Adaptive equalization, ” Proceedings of theIEEE, vol. 73, no. 9, pp. 1349–1387, 1985.[8] D. Falconer, S. L. Ariyavisitakul, A. B enyamin-Seeyar, andB. Eidson, Frequency domain equalization...
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Báo cáo hóa học: " Frequency-Domain Blind Source Separation of Many Speech Signals Using Near-Field and Far-Field Models" docx
... the frequency- domain approach. Frequency- domain BSS is influenced bythe circularity of the discrete -frequency representation. Thiscauses a problem when we convert separation matrices in the frequency ... (2)Figure 1 shows the flow of BSS in the frequency domain. Each convolutive mixture in the time domain is convertedinto multiple instantaneous mixtures in the frequency do-main. Therefore, we can ... Periodic time -domain filter represented by frequency re-sponses sampled at L= 2048 points (a) and its one-period realiza-tion (b).4. SPECTRAL SMOOTHING WITHERROR MINIMIZATION Frequency- domain BSS...
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Báo cáo hóa học: "Frequency-Shift Zero-Forcing Time-Varying Equalization for Doubly Selective SIMO Channels" doc
... vari-ation of the channel model (2), we derive the frequency- domain representation of fopt(k), which represents the time- frequency dual of the time -domain representation (13)andallows us to show ... relation (26) shows that the equivalent frequ-ency -domain representation of fopt(k) turns out to be theminimal norm solution of the frequency- domain LTV-ZFcondition (21), that is,ψopt= arg ... minimal normLTV-ZF equalizer is represented in the frequency- domain asa parallel bank of LTI equalizers, each one of them is drivenby a different frequency- shifted version of z(k), and the out-put...
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Báo cáo hóa học: " Frequency and spectrum of mitochondrial 12S rRNA variants in 440 Han Chinese hearing impaired pediatric subjects from two otology clinics" ppt
... alterations [22].Among these variants, 19 variant were absent in the 449Han Chinese controls, while the frequency of other var-iants ranged from 0.2% (13 variants such as 789T > C)to 22.7% (709G ... withaminoglycoside ototoxicity. Mitochondrion 2010.doi:10.1186/1479-5876-9-4Cite this article as: Shen et al.: Frequency and spectrum ofmitochondrial 12S rRNA variants in 440 Han Chinese hearing impairedpediatric ... variants in the 12S rRNAgene [34]. These variants were first evaluated by exam-ining the allelic frequency in 449 Han Chinese controlpopulation. Nineteen out of 41 variants were absent inthis...
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báo cáo hóa học:" Frequency of Drug-Resistant Variants of HIV-1 Coexistent With Wild-Type in Treatment-Naive Patients of India" pdf
... well asthe transmission of drug-resistant HIV strains would aiddesign of optimal drug regimens and clinical manage-ment. Our study was designed to obtain preliminary dataon the frequency of ... offered to HIV-infected patients andpregnant women to stop vertical transmission. [17] Thedata obtained from our study revealed a low frequency ofcodon 215 mutations (1.67%) compared with codon 70(80%) ... because of reduced replication fit-ness.[9]Our study was designed to obtain preliminary data on the frequency of drug-resistant variants of HIV-1 in a NorthIndian population. We performed genotyping...
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Báo cáo hóa học: "DRO: domain-based route optimization scheme for nested mobile networks" pdf
... handoff i s divided into theintra -domain and inter -domain handoff, Thus, μ is com-posed of μGand μL,whereμGand μLmean the rate ofinter -domain and intra -domain handoff for an MR,respectively. ... can find betterrouting path to achieve the intra -domain routeoptimization.3.3 Inter -domain routingFigure 5 shows the flow chart of the inter -domain routeoptimization procedure in DRO. As shown ... inter- domain routing; Figure 8b shows the mobile networkfor intra -domain routing when there is no commonparent between the CN and the MNN; and Figure 8cshows the network for intra-domain...
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Báo cáo hóa học: " Frequency Shift of Carbon-Nanotube-Based Mass Sensor Using Nonlocal Elasticity Theory" ppt
... depicts the effect of nonlocal parameter on the frequency shift of the cantilever sensor with attached massfor c/L = 1. It can be seen that the frequency shift of thesensor increases with increasing ... increases the frequency shift. The trend isobvious when the attached mass is small compared withthat of the sensor.In addition, the location of attached mass can influenceon the changes in frequency ... of attached mass, c/L,onthe frequency shift of the cantilever mass sensor for e0a/L = 0.3. It can be seen that the effect of the location ofattached mass on the frequency shift of the mass...
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Báo cáo hóa học: " Charge-Domain Signal Processing of Direct RF Sampling Mixer with Discrete-Time Filters in Bluetooth and GSM Receivers" docx
... 1200 Frequency (MHz)MA7 @RFMA8 @RFMA9 @RF Frequency response of the temporal MA filtersFigure 3: Transfer function of the temporal MA operation at RFrate.in the voltage domain. Its frequency ... 4. The following equations describe the time- domain signal processing: (3)forwi,(4)and(5)forxj,(9)for yk,and(10)forzk.The first aliasing frequency (at f0/N = 300 MHz) is par-tially ... MHz offset.For the above system with an aggressive cut-off frequency of fc1= fc2= 1.5 MHz, using CR= 0.5pF will resultin a dc -frequency voltage gain of 63.66 or 36 dB (17)andthe required...
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