information handling in mobile applications a look beyond classical approaches
MULTI - SCALE INTEGRATED ANALYSIS OF AGROECOSYSTEMS - CHAPTER 1 potx
Ngày tải lên :
11/08/2014, 21:21
... mosaic into an organic whole This is what is presented in Part of this book Part provides new approaches for organizing data and examples of applications of multi-scale integrated analysis of agroecosystems ... a major increase in the flow of investments in agriculture .A dramatic increase in investments in farming will not happen without an adequate return on these investments This can only be obtained ... that introduce main concepts, new vocabulary and narratives using practical examples and metaphors taken from normal life situations Technical sections that get into a more detailed explanation...
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channel adaptive technologies and cross layer designs for wireless systems with multiple antennas
Ngày tải lên :
01/06/2014, 07:54
... systems With the availability of perfect channel state information (channel matrix), power adaptation (in both the temporal and spatial domains) and rate adap- Adaptive channel encoder Adaptive power ... Gaussian MAC capacity region C Comparison between average packet delay and average arrival rate of various scheduling algorithms in a two-user MAC channel [145] Routing mechanisms in the RICA ... strategy with feedback link capacity constraint Ergodic channel capacity versus average SNR of ¥ system at various feedback channel capacities Cfb = 0,1,2,∞ Forward channel capacity versus average...
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Báo cáo hóa học: " Adaptive selection of antenna grouping and beamforming for MIMO systems" ppt
Ngày tải lên :
20/06/2014, 22:20
... feedback beamforming vector(s) or right unitary matrix of SVD instead of full CSI Feedback information in antenna grouping is a beamforming vector (Nt×1 vector) plus additional antenna grouping information ... Euclidean distance of the received antenna grouping constellation is λ2 (HAG ) · d2 min,ag Nr ≤ d2 min,ag ≤ λmax (HAG ) · d2 min,ag Nr (16) where lmin(HAG), lmax(HAG) are minimum and maximum singular ... proportional to the squared singular value of a channel The BER performance is thus dominated by the minimum singular value We find the minimum singular value of each HAG, and pick the best Hi’s and WAG...
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Báo cáo hóa học: " Vector perturbation based adaptive distributed precoding scheme with limited feedback for CoMP systems" docx
Ngày tải lên :
21/06/2014, 03:20
... serving BS and uses gradient adaption for coordinated BSs precoding; the precoding vectors of the coordinated BSs are also in phase synchronization with the serving BS So ADP can be seen as a tradeoff ... channel measure and estimated However, in practical systems, the feedback delay means that the channel state information used for transmission cannot match the real channel state, which leads to poorer ... performance If the precoding vector and the adjustment factor can be selected based on a predicted channel state information feedback, the performance loss can be compensated In the following analysis,...
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Báo cáo hóa học: " Research Article Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems" pdf
Ngày tải lên :
22/06/2014, 06:20
... for antenna selection Let A = UA A VH be a singular value decomposition [32] of A matrix A We get A AH A −1 A H = UA Σ A V H V A Σ V H A A A −1 VA A UH A = UA A VH VA Σ-2 VH VA A UH A A A A ... = variable gainlinear amplifiers and phase shifters are available at the receiver (4 antenna elements in each subarray) Results are compared to an ergodic capacity bound and exact ergodic capacity ... = A VH is a matrix with orthogonal rows and A columns B Let A = UA A VH be a singular value decomposition of the A transformation matrix A Exploiting Hadarmard’s inequality for determinants...
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Báo cáo hóa học: " Research Article Channel Impulse Response Length and Noise Variance Estimation for OFDM Systems with Adaptive Guard Interval" docx
Ngày tải lên :
22/06/2014, 22:20
... channel including the channel variance and the noise variance The ratio R is defined in [6] as a constant factor in the interval [0.9 → 0.95] Since the noise variance and the channel variance are ... transmission environment A quantitative gain in terms of data rate can only be estimated for a specified scenario This gain could be significant for a network covering large areas In other cases, ... Moghaddam, H Amindavar, and R L Kirlin, A new time-delay estimation in multipath,” IEEE Transactions on Signal Processing, vol 51, no 5, pp 1129–1142, 2003 [6] Y Zhao and A Huang, A novel channel...
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Báo cáo hóa học: " A Reconfigurable Spiral Antenna for Adaptive MIMO Systems" docx
Ngày tải lên :
23/06/2014, 00:20
... segments in constructing reconfigurable spiral antenna (a) Antenna pattern, DC bias path, and via formation (b) Dielectric layer deposition and sacrificial layer planarization (c) Aluminum (Al) membrane ... Nakano, J Eto, Y Okabe, and J Yamauchi, “Tiltedand axial-beam formation by a single-arm rectangular spiral antenna with compact dielectric substrate and conducting plane,” IEEE Trans Antennas ... responses of axial ratio and gain in the zdirection for RHCP spiral antenna initial design and fabrication that will pave the way for novel antennas into which multifunctional features are dynamically...
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Báo cáo y học: "Networked Research buffering: a basic mechanism for distributed robustness in complex adaptive systems" pptx
Ngày tải lên :
13/08/2014, 16:20
... that are degenerate in their affinity to particular molecular species and are roughly interchangeable in their ability to up/down regulate a particular pathway NBH suggests that when the relationships ... When a system has many agents that perform the same task then the loss of one agent can be compensated for by others, as can variations in the demands for that task Stated differently, having an ... genes that are mutated in each protein system Differential robustness is defined as the probability for a system phenotype to maintain fitness after it was allowed to adjust to a change in conditions...
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agent-based model selection framework for complex adaptive systems
Ngày tải lên :
13/11/2014, 11:02
... from candidates, are iEWA and sEWA (individual parameter values) 186 A. 26 Heterogeneous agents: generating classes, excluded from candidates, are iEWA and sEWA (individual parameter values) ... (2004) and Laine & Busemeyer (2004b, 200 4a) use different approaches to model households’ annual agricultural land-use decision making in rural South-central Indiana, and evaluate their models against ... summary statistic) information either output by a model when run (artificial data), or acquired from real world by using other media and methods (observed data) Data may represent quantitative information...
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Dynamic scheduling techniques for adaptive applications on real time embedded systems
Ngày tải lên :
10/09/2015, 15:52
... those applications is the GrADs project meant for Grid applications [7] 12 CHAPTER Related Work In contrast to spatial execution-adaptable applications, quality-adaptable applications feature in ... consumption, and real-time deadline satisfaction Contemporary dynamic scheduling approaches are not suitable for the emerging adaptive applications, because not only of the incapability of taking application ... adaptiveness, and infrastructural requirements 2.1 Adaptive Applications Application adaptation ambiguously refers to two aspects: the execution adaptation and the quality adaptation As a conventional notion...
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Design of adaptive and hybrid energy QOS aware heterogeneous multiprocessor scheduling strategies for embedded systems
Ngày tải lên :
04/10/2015, 15:44
... Normalized Charge Consumption BAPM Battery-Aware Power Management BSN Body Sensor Network DA Damage Assessment DAG Directed Acyclic Graph DAM Damage DAT Data Available Time DP Data Preprocessing ... the amount of charge a pristine battery would have Measured in mA-mins a αT Total charge inside a battery at any given point in time This charge would be equal to the sum of A and αL A Charge ... that the tasks are independent and can be executed in any order In a practical application, such as our BSN application, that enforces dependency among tasks, obtaining a strictly decreasing current...
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A Study of Channel Estimation for OFDM Systems and System Capacity for MIMO-OFDM Systems
Ngày tải lên :
20/11/2012, 11:28
... UWB is a technology for transmitting data spread over a large bandwidth (usually larger than 500 MHz) that shares among users UWB was traditionally applied in non-cooperative radar imaging Most ... International Mobile Telecommunication Advanced (IMT-Advanced) standardization Future WiMAX, or the proposed WiMAX release 2, is considered as a candidate of 4G family LTE is the latest standard in ... with increasing demands of high data transmission rate and reliable communication quality, channel estimation has become a necessary part in the OFDM system For example, the digital video broadcasting...
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Free Software tools for embedded systems
Ngày tải lên :
20/10/2013, 00:15
... or with OpenOffice.org itself! Take advantage of internal or external hyperlinks So, don’t hesitate to click on them! Find pages quickly thanks to automatic search Use thumbnails to navigate in the document in a quick way ... microkernel (PikeOS), an approach similar to RTAI Makers of KaeilOS (http://koansoftware.com/kaeilos/), a GPL embedded Linux distribution for industrial applications KaeilOS supports i386 and popular arm platforms. Other platforms supported upon ... Creative Commons AttributionShareAlike 2.5 license Jan 24, 2008 http://freeelectrons.com 15 Standalone toolchain build Building a crosscompiling toolchain by yourself is a difficult and painful task! Can take days or weeks!...
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techniques for adaptive control - vance vandoren
Ngày tải lên :
12/12/2013, 22:42
... virtually any collection of objects or materials with measurable and modifiable characteristics such as, a car traveling at a certain speed, a batch of beer brewing at a certain temperature, or a ... generally not as easy since changing to a new model format generally requires starting again from scratch (though once again BrainWave is a notable exception) Rule-based controllers also have ... dominant quadratic lag A load in a real process is usually introduced upstream of dominant process lags and has a nonzero mean value Therefore, the ideal controller rejects a step (or random-walk)...
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Tài liệu C Programming for Embedded Systems docx
Ngày tải lên :
22/12/2013, 02:17
... you have a particular scheme in mind, you can declare your variables as being in that memory area Listing 3.2 Declaring in named address space #pragma memory ROM [0x4000] @ 0xA000; #pragma memory ... therefore, each line of code written in C can replace many lines of assembly language Debugging and maintaining code written in C is much easier than in code written in assembly language 1.3— Outline ... of a trademark claim, the product name appears in initial capital letters, in all capital letters, or in accordance with the vendor's capitalization preference Readers should contact the appropriate...
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