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 35 for “"Timing requirements"”.
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Issues on Synchronizing and Scheduling Tasks in Real-Time Database Systems
Real-time systems have timing requirements. In database systems, database operations are performed in a sequence so as to maintain database consistency. By combining the features of a real-time system and a database system, a real-time database system must satisfy requirements from both models. …
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Design and Analysis of an Adaptive Asynchronous System Architecture for Energy Efficiency
… systems is limited because of the strict timing requirements such systems must comply with. Delay-insensitive (DI) asynchronous systems have the potential to benefit more from these techniques due to their flexible timing requirements and high modularity. This dissertation presents the …
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Operating system level resource management for real-time systems
… for guaranteeing deterministic or probabilistic timing requirements of real-time systems. In that regard, scheduling the CPU time has been the core aspect of any RTOS, as it directly contributes to satisfying timing requirements of real-time systems. In recent years, however, the emergence of …
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Hardware implementation of wireless bit rate adaptation
… implementation of SoftRate which meets 802.11 timing requirements.
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Scheduling Real-Time Computations With Temporal Distance and Separation Constraints and With Extended Deadlines
… correct but also must meet their strict timing constraints. To guarantee the timing requirements are satisfied, effective scheduling algorithms must be used. Different real-time applications have different timing requirements. Therefore, different timing constraints must be defined for …
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Implementing real-time reactive systems from object-oriented design specifications
… because of their size and complex functional and timing requirements. TROMLAB is a framework for a rigorous development of consistent design that satisfy an authoritative specification of requirements, validate the design through simulation, and verify the design for safety properties through a …
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Rose-GRC translator : mapping UML visual models onto formal specifications
… to design because of the complex functional and timing requirements that must be satisfied. Visual models serve to break the complexity barrier, allowing the developer to comprehend and reason with graphical representations. The graphical representations by themselves are not sufficient--they are …
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A field programmable gate array based software defined radio design for the space environment
… thesis documents an analysis of the memory and timing requirements of the circuit so that it may be used on resource-constrained FPGA devices. It also explores the operating capabilities and limitations for this circuit under various resourceconstrained conditions and introduces algorithms for …
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Automatic code generation for real-time reactive systems in TROMLAB environment
… because of their complex functional and timing requirements. TROMLAB is a rigorous framework founded on TROM formalism for developing real-time reactive systems. The framework provides a number of tools that make formalism transparent to the application developer. The work presented in …
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Design and Implementation of a Scalable Real-Time Motor Controller Architecture for Humanoid Robots and Exoskeletons
… These control loops often introduce precise timing requirements due to the safety critical nature of the underlying hardware. Also the motor controller needs to run fast and interface with several sensors. The commercially available motor controllers generally do not satisfy all the …
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Automated test generation from formal specifications of real-time reactive systems
… because of their size and complex functional and timing requirements. They are often used in safety-critical contexts. Consequently, the correction of such systems must be assured before they are deployed. This thesis addresses the quality assurance of real-time reactive systems through rigorous …
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A Frequency-Domain Method for Active Acoustic Cancellation of Known Audio Sources
… analog-to-digital converters (ADCs) with strict timing requirements on the order of tens of microseconds. These timing requirements determine the maximum sample rate and bit size as well as the maximum attenuation that the system can achieve. In traditional noise cancellation systems, the general …
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Single-layer bus routing for high-speed boards
… clock frequencies used in industry increase, the timing requirements on high-speed boards become very tight. Since wire length is directly proportional to wire delay of the buses that connect each chip on high-speed boards, each wire in the bus has to be tightly bounded by the maximum and minimum …
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Schedulability analysis of resource access control protocols in real-time systems
To guarantee the timing requirements of real-time systems are satisfied, the timing behavior of the systems must be predictable. Priority driven scheduling algorithms, such as the earliest deadline first algorithm, are known to be effective and predictable in scheduling independent tasks. However, …
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Secure integration of electric vehicles with the power grid
… the anomaly detection engine also monitors the timing requirements of the system by checking the frequency constraints on messages at the aggregator apart from monitoring the cyber and physical data constraints to ensure safety of the aggregator.
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ChitChat : making video chat robust to packet loss
… hence can interact negatively with the strict timing requirements of interactive video. FEC codes introduce extra overhead and hence reduce the bandwidth available for video data even in the absence of packet loss. In this thesis, we present ChitChat, a new approach for reliable video chat that …
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Building flexible real-time systems
… for hard real-time systems have stringent timing requirements. Real-time programs are usually designed for the worst-case situation, which makes them inefficient. We argue that real-time programs should be more flexible, resulting in systems which can respond to dynamic environments. …
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Practical distributed MIMO for WiFi and LTE
… and mobile clients while meeting the tight timing requirements of the 802.11 WiFi standard. We also introduce Chorus the first scalable distributed MIMO system for LTE. Chorus works with the different modes of LTE and is resilient to changes in network configuration. Both MegaMIMO 2.0 and …
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Towards Efficient Autonomous Vehicle Systems: A Multi-Layer Approach
… partitioning and linear programming to minimize timing metrics such as Data Age, Reaction Time, and Time Disparity, the approach yields 20% to 40% reductions in worst-case latency with strong scalability and polynomial-time complexity. At the communication layer, the Partitioned Combined-DBP-TCCP …
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Schedulability analysis and automated implementation of real-time object-oriented design models
… given an application design model and end-to-end timing requirements, we synthesize a feasible implementation model using a built-in schedulability analysis tool. The synthesis process is supported by automatic code generation that can take the application design model and the synthesized …
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