Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 32 for “"information capacity"”.
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Minimum cell size for information capacity increase in cellular wireless network
… co-channel interference model unsuitable for information capacity analysis of the future cellular systems. Therefore, a co-channel interference model suitable for future and emerging wireless communication system becomes necessary. In this thesis a new and modified interference model is …
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ΔΙΕΡΕΥΝΗΣΗ ΦΥΣΙΚΟΓΕΩΜΕΤΡΙΚΩΝ ΠΑΡΑΜΕΤΡΩΝ ΓΙΑ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΤΗΣ ΑΚΤΙΝΟΓΡΑΦΙΑΣ
… FOR SEVERAL SCREEN-FILM SYSTEMS. CALCULATIONS ON INFORMATION CAPACITY FOR SCREEN-FILM SYSTEMS HAVE BEEN CONDUCTED AND THE INTRODUCTION OF THE PARAMETER "INFORMATION CAPACITY PER UNIT AREA AND PER UNIT EXPOSURE" HASBEEN PROPOSED. THE DEPENDENCE OF THE EFFECTIVE AND EQUIVALENT FOCAL SPOT SIZEON THE …
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Packaging solution for VLSI electronic photonic chips
As the demand of information capacity grows, the adoption of optical technology will increase. The issue of resistance and capacitance is limiting the electronic transmission bandwidth while fiber optic delivers data at the speed of light and is only limited by scattering as well as absorption. …
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Capacities of erasure networks
… investigated, in various multiple senses, the “capacity” of several models of erasure networks. The defining characteristic of a memoryless erasure network is that each channel between any two nodes is an independent erasure channel. The models that we explore differ in the absence or presence …
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New Method for Directional Modulation Using Beamforming: Applications to Simultaneous Wireless Information and Power Transfer and Increased Secrecy Capacity
… for these systems must have sufficient information capacity and secrecy capacity while typically maintaining small size, light weight, and minimized power consumption. With increasing crowding of the electromagnetic spectrum, interference must be leveraged as an available resource. This …
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The effect of scene content on image quality
… image quality metrics, the Effective Pictorial Information Capacity (EPIC) and the Perceived Information Capacity (PIC), were used to predict subjective image quality for a test set that varied in sharpness and noisiness. These metrics were found to be reliable predictors of image quality. …
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A Ray-Based Investigation of the Statistical Characteristics and Efficient Representation of Multi-Antenna Communication Channels
… research interest as a means to increase the information capacity, reliability, and spectral efficiency of wireless information transfer. Ray-tracing methods predict the behavior of wireless channels using a model of the propagation environment and are a low-cost alternative to direct …
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Storage Capacity of the Linear Associator: Beginnings of a Theory of Computational Memory
… Toward this end, a theory of memory based on information-theory is devised. The principles of the information-theory of memory are then used in conjunction with the dynamics of the linear-associator to discern its storage capacity and classification capabilities as they scale with system size. …
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Explaining the Strength of Legislative Committees: A Comparative Analysis
… the progress of legislation; and 3) committees' information capacity, institutional incentives granted to them to gather and transmit information. These distinct dimensions benefit different legislative actors. Therefore, they reflect different features of a political system, and may not be …
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Prime-sized multilevel flash memory with non-binary LDPC
… the number of bits per cell to obtain higher information capacity per cell, starting from 1 bit/cell and going to 4 bits/cell recently. This scaling is enabled by the advancements in flash semiconductor technology, specifically the Bit Cost Scalable (BiCS) technology. However, capacity per …
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High-Dimensional Quantum Information: From Sensing to Underwater Quantum Communication
Quantum information has become an exciting field of research in the last 20 years, as experimental advancements allow us to control, manipulate, and detect states of quantum systems. A subset of this field studies the application of high-dimensional quantum states in communication, computing, and …
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Essays on Financial Market Interdependence
… downside risks in Asian-Pacific markets given information on extreme downside risks in the U.S. and Japanese markets. The extreme downside risk of a market is measured as the occurrence of extreme downside movement market returns falling below left-tail Value at Risk in a Markov switching …
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An Optimization of Thermodynamic Efficiency vs. Capacity for Communications Systems
… work is the definitive source for analyzing information capacity of a communications system but his formulation does not predict an efficiency relationship suitable for calculating the power consumption of a system, particularly for practical signals which may only approach the capacity …
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Magnetic logic circuits with high bit resolution for hardware acceleration
… demonstrate that the bit resolution, or analog information capacity, of a magnetic nanowire with a single domain wall is limited by the self-affine statistics of the wire edge roughness. The domain wall logic device is extended further into functional design implementations, including a …
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A High-Precision Bioelectric Neural Interface Toward Human-Machine Symbiosis
… an intuitive, bidirectional, and high-bandwidth information conduit between the minds and machines. Approach. Here we focus on developing high-precision bioelectronics underlying a new class of bioelectric neural interfaces that could bring us one step closer to this feat. We pioneer new circuit …
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Study of artificially disordered optical fibers
… fibers can be useful for e.g. maximizing the information capacity multi-mode fiber links"--Abstract, page v.
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Non-Binary Coded Modulation for FMF-Based Coherent Optical Transport Networks
… communication. Current trends indicate that high-capacity demands are not going to be saturated anytime soon. From Shannon's theory, we know that information capacity is a logarithmic function of signal-to-noise ratio (SNR), but a linear function of the number of dimensions. Ideally, we can …
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Information-theoretic analysis of human-machine mixed systems
Many recent information technologies such as crowdsourcing and social decision-making systems are designed based on (near-)optimal information processing techniques for machines. However, in such applications, some parts of systems that process information are humans and so systems are affected by …
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Evidence of compression and probabilistic representation during mental imagery
… is heavily dependent on the amount of information remembered to successfully generate accurate metal images, complex scenes can be much harder to re-imagine than simpler ones. Here we try to characterize what makes an image hard to imagine by considering several hypotheses: the total …
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Adaptive MMSE multiuser receivers in MIMO OFDM wireless communication systems
… better quality of service, and higher network capacity, there is a migration from Single Input Single Output (SISO) antenna technology to a more promising Multiple Input Multiple Output (MIMO) antenna technology. On the other hand, Orthogonal Frequency Division Multiplexing (OFDM) technique has …
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