Topic
System-level simulation
About: System-level simulation is a research topic. Over the lifetime, 294 publications have been published within this topic receiving 1951 citations.
Papers published on a yearly basis
Papers
TL;DR: The objective of this work is to analyze the performance of physical and medium access control (MAC) layers by means of a network-wide simulation so as to enhance system throughput while maintaining other performance metrics such as coverage and post hybrid automatic repeat request (HARQ) error rates.
Abstract: In this paper, collaborative spatial multiplexing is considered for a system based on IEEE 802.16e. By allowing multiple simultaneous in-sector transmissions on the same time-frequency resources, collaborative spatial multiplexing, also known as collaborative uplink MIMO (cMIMO), increases the peak transmission rates and makes system throughput improvement possible. The objective of this work is to analyze the performance of physical and medium access control (MAC) layers by means of a network-wide simulation so as to enhance system throughput while maintaining other performance metrics such as coverage and post hybrid automatic repeat request (HARQ) error rates. Assuming multiple modes of transmission, e.g., single input-multiple output (SIMO) or multiple input-multiple output (MIMO) are available, this paper describes physical and MAC level techniques related to UL-MIMO, such as receiver algorithms, transmission mode selection, ranking of SIMO/MIMO transmissions, MIMO pairing, HARQ process selection, allocation of bandwidth (burst size) and power, and selection of the modulation and coding scheme. Finally, this paper presents link and system level simulation results that demonstrate that up to 60 percent improvement in average sector throughput is possible for collaborative UL-MIMO without compromising other user performance criteria.
209 citations
26 Jul 2009
TL;DR: In this paper, a 20kVA solid state transformer based on 6.5kV IGBT is proposed for interface with 12kV distribution system voltage and the average model and control scheme of SST including AC/DC rectifier, Dual Active Bridge (DAB) converter and DC/AC inverter are developed to enable dynamic system level simulation.
Abstract: The Solid State Transformer (SST) is one of the key elements proposed in the National Science Foundation (NSF) Generation-III Engineering Research Center (ERC) “Future Renewable Electric Energy Delivery and Management” (FREEDM) Systems Center established in 2008. The SST is used to enable active management of distributed renewable energy resources, energy storage devices and loads. In this paper, a 20kVA solid state transformer based on 6.5kV IGBT is proposed for interface with 12kV distribution system voltage. The average model and control scheme of SST including AC/DC rectifier, Dual Active Bridge (DAB) converter and DC/AC inverter are developed to enable dynamic system level simulation. The developed average model is verified by comparing with the detailed switching model simulation. The dynamic system level SST simulation verifies the proposed controller and the corresponding average model illustrates the functionalities and advantages of the SST in FREEDM system.
155 citations
1 Sep 2009
TL;DR: The simulation results show that the SA technology can enhance the throughput, fairness and latency performance in LTE-Advanced system comparing with independent carrier scenario for different traffic models.
Abstract: Spectrum aggregation (SA) is one of the potential LTE advanced technologies. The analysis and simulation for SA in LTE-Advanced system are addressed in this paper. We first analyze the system model of SA, and propose some evaluation methodologies for SA. Then the schedulers for SA with joint queue and disjoint queue are proposed. Finally, different traffic models are considered in the system level simulation to evaluate the performance gain of spectrum aggregation over deploying independent carriers on the eNode-B. The simulation results show that the SA technology can enhance the throughput, fairness and latency performance in LTE-Advanced system comparing with independent carrier scenario for different traffic models.
103 citations
TL;DR: This work proposes a new power evaluation technique that is targeted toward peripheral cores that is the first to combine for peripherals both gate-level-obtained power data with a system-level simulation model written in an object-oriented language.
Abstract: Various core-based power evaluation approaches for microprocessors, caches, memories and buses have been proposed in the past. We propose a new power evaluation technique that is targeted toward peripheral cores. Our approach is the first to combine for peripherals both gate-level-obtained power data with a system-level simulation model written in an object-oriented language. Our approach decomposes peripheral functionality into so-called instructions. The approach can be applied with three increasingly fast methods: system simulation, trace simulation or trace analysis. We show that our models are sufficiently accurate in order to make power-related system-level design decisions but at a computation time that is orders of magnitude faster than a gate-level simulation.
64 citations
12 Oct 1997
TL;DR: A novel method for interfacing between link level simulator and system level simulator types is presented, to extract more information than usual from the link level simulation, and to include multipath fading in a system level simulation that operates on TDMA burst level.
Abstract: Advanced simulation tools are of paramount importance for development and analysis of proposed and existing functionality in cellular systems. The different time scales involved in analyzing an entire system make it generally impossible to use one single simulator. Instead, several layers of simulators are normally used together. A common combination of tools is a link level simulator and a system level simulator. This paper presents a novel method for interfacing between these two simulator types. The main idea is to extract more information than usual from the link level simulation, and to include multipath fading in a system level simulation that operates on TDMA burst level. The result is reduced total simulation time and increased accuracy, especially for simulation of services with bursty transmission characteristics, such as packet data. To illustrate the method, the speech quality for a GSM system with and without features such as frequency hopping is derived.
62 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2024 | 2 |
| 2022 | 2 |
| 2021 | 8 |
| 2020 | 6 |
| 2019 | 9 |
| 2018 | 9 |