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Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
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A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
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Reduction Method for a Network-on-Chip Low-Level Modeling.

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Ring-Split: Deadlock-Free Routing Algorithm for Circulant Networks-on-Chip.

Aleksandr Y Romanov1, Nikolay M Myachin2, Evgenii V Lezhnev1

  • 1HSE University, Moscow 101000, Russia.

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|January 21, 2023
PubMed
Summary

Circulant topologies offer a deadlock-free solution for networks-on-chip (NoCs). New routing methods improve network throughput by up to 59% compared to mesh topologies.

Keywords:
NoC modelingcirculant topologydeadlocknetwork-on-chiprouting algorithm

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Area of Science:

  • Computer Engineering
  • Network Architecture

Background:

  • Networks-on-chip (NoCs) require efficient and deadlock-free topologies.
  • Circulant topologies present a promising, yet deadlock-prone, alternative to traditional mesh topologies.

Purpose of the Study:

  • To introduce a new high-level modeling approach, Newxim, for exploring various NoC topologies.
  • To propose novel methods for mitigating deadlocks in circulant topologies for NoCs.

Main Methods:

  • Development of the Newxim high-level modeling framework for NoC topology exploration.
  • Implementation of two deadlock-solving strategies: a universal acyclic subnetwork bypass and a topology-specific Ring-Split method.
  • High-level modeling and comparative analysis of circulant and mesh topologies using deadlock-free routing algorithms.

Main Results:

  • The proposed methods effectively address cyclic dependencies and deadlock issues in circulant topologies.
  • Circulant topologies, with the new routing approach, demonstrated up to 59% higher peak throughput than mesh topologies under uniform load.
  • The Newxim model facilitates efficient exploration and comparison of different NoC designs.

Conclusions:

  • Circulant topologies, when augmented with advanced deadlock-free routing strategies, offer superior performance over traditional mesh NoCs.
  • The developed methods and Newxim model provide valuable tools for designing high-throughput, reliable networks-on-chip.