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 198 for “"random access"”.
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Computational complexity of random-access models
… machine and its multidimensional variant, the random access machine (RAM), the tree machine, and the pointer machine. The basic computational properties of the pointer machine are examined in more detail. For example, time and space hierarchy theorems for pointer machines are presented.
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Advanced random access techniques for satellite communications
In this thesis, Advanced Random Access techniques for Satellite Communications are studied. In the last years, new advances in multi-access communication protocols together with the increasing need for bidirectional communications in consumer type of interactive satellite terminals have revived the …
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Instruction Sets for Parallel Random Access Machines
… the computational power of time bounded Parallel Random Access Machines (PRAMs) with different instruction sets. A basic PRAM can perform the following operations in unit-time: addition, subtraction, Boolean operations, comparisons, and indirect addressing. Multiple processors may concurrently …
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Coding for random access in wireless networks
… In such a scenario, providing energy efficient random-access access becomes a challenge. Information theoretic analysis of such systems becomes imperative to understand the gap from optimality of the methods of random-access currently employed. In this thesis we discuss the trade-off between the …
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Analysis of magnetic random access memory applications
Magnetic Random Access Memory (MRAM) is considered to be the most viable option for nonvolatile memory in the computer industry. This need for nonvolatile computer memory has resulted in the dramatic evolution of MRAM technology in the past ten years. Currently in the latter stages of development, …
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Fundamental limits of random access in wireless networks
Random access schemes are simple and inherently distributed, yet could provide the striking capability to match the optimal throughput performance (maximum stability region) of centralized scheduling mechanisms. The throughput optimality however has been established for activation rules that are …
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Cross-layer design of random access wireless networks
… for wireless networks. Wireless medium access control (MAC) has to be specifically designed to resolve contention in the presence of interference. As a result, an important technique, the random access protocol, has emerged to address the contention issue. This protocol is the essential …
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Electrochemical random access memory as deep learning accelerators
… under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Neuromorphic computing systems : crystalline resistive random access memory
… Silicon (Si)-based crystalline resistive random-access memory (crystalline RRAM) artificial synapses for neuromorphic computing. The main scaling bottleneck is poor temporal and spatial uniformity of artificial synapses. To the best of the author's knowledge, crystalline RRAM reported in …
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Random Access Satellite Communication in the Presence of Interference
This thesis explores a random access service for satellites with the possibility of unintentional or intentional interference. Previous work does not address large bandwidth-delay product systems and interference. This thesis combines the challenges of each, developing a methodology for modeling …
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Multiple-coupled random access techniques for packet radio networks.
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1978.
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Novel Non Precharging Single Bitline 8T Static Random Access Memory
Novel 8T SRAM design, employs individual bit-line (BL) and word-line (WL) for each operation. The read operation uses read word-line (RWL) and read bit-line (RBL) respectively. On other hand the write operation employs write word-line (WWL) and write bit line (WBL). Due to single BL and WL the …
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Group sharing and random access in cryptographic storage file systems
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Fabrication and Characterization of HfO2 Based Resistive Random Access Memory Devices
… for even higher levels of performance. Resistive Random Access Memory (ReRAM) is a leading candidate to be the first universal memory. As a two-terminal device with 3D capability, DRAM-like latency, and non-volatile storage, it essentially meets the requirements. Higher endurance and higher yield …
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IMPROVING THE HAFNIA-BASED RESISTIVE RANDOM-ACCESS MEMORY THROUGH MATERAL ENGINEERING
RESISTIVE RANDOM-ACCESS MEMORIES (RRAMS) ARE EXTENSIVELY INVESTIGATED AS A REPLACEMENT FOR FLASH MEMORIES DUE TO ITS SUPERIOR CHARACTERISTICS: HIGHER SPEED, BETTER ENDURANCE, MORE SCALABLE DESIGN AND SIMPLER FABRICATION PROCESSES. HOWEVER, DUE TO THE STOCHASTIC NATURE OF SUCH RESISTIVE SWITCHING, A …
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Optimizing Random Access for Information Freshness in Spatially Distributed Wireless Networks
… networks where nodes use a spatially adaptive random access scheme to send status updates to a central base station. We show that the set of achievable AoI in this setting is convex, and design policies to minimize weighted sum, min-max, and proportionally fair AoI by setting transmission …
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Magnetoresistive Random Access Memory (MRAM) technology : current advancement and future development
… been used widely in computing jargon to refer to random access memory (RAM). RAMs are built with steady improvement over the years owing to semiconductor integrated circuit (IC) technology. However, RAMs are still struggling to achieve all aspect of the paramount design intended for memory device: …
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A Reconfigurable Random Access MAC Implementation for Software Defined Radio Platforms
… This thesis will present the development of a random access MAC protocol for the IRIS platform. An assessment of different SDR hardware and software platforms is conducted. From this assessment, we present several SDR technology requirements for networking research and discuss the impact of …
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Distributed Algorithms for Resource Allocation in Multi-Hop Random Access Wireless Networks
We then present a distributed flow-based access scheme for slotted-time protocols that provides proportional fairness with respect to flow-throughput under constraints on the buffer overflow probabilities at each node. We model the end-to-end flows in an ad hoc wireless network using a tandem of …
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