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Modern computing systems have adopted multicore architectures and multiprocessor systems on chip (MPSoCs) for accommodating the increasing demand on computation power. However, performance boosting is constrained by shared resources, such as buses, main memory, DMA, etc.This paper analyzes the worst-case completion (response) time for real-time tasks when time division multiple access (TDMA) policies...
Multi-processor and multi-core systems are becoming increasingly important in time critical systems. Shared resources, such as shared memory or communication buses are used to share data and read sensors. We consider realtime tasks constituted by superblocks, which can be executed sequentially or by a time triggered static schedule. Three models to access shared resources are explored: (1) the dedicated...
In this paper, our aim is to devise energy efficient strategies for single and multiuser multiple-input multiple-output (MIMO) antenna systems with individual users' effective capacity (EC) constraints. The use of EC provides a metric to quantify the maximum achievable rate under a certain delay constraint and in particular, we formulate the problem as a cross-layer resource allocation problem that...
In this paper, we aim to develop an energy-efficient multiuser time-division multiple-access (TDMA) system in block-fading (BF), subject to individual user's quality-of-service (QoS) requirements in terms of outage probability, by jointly-adaptive time-sharing and power allocation for the users in accordance with the causal channel side information (CSI) at the transmitter. We first propose a simple...
This paper addresses a time-division multiple-access (TDMA) multiuser multiple-input multiple-output (MIMO) antenna system in if-block Rayleigh flat-fading. Assuming a downlink channel where users are given individual outage probability constraints and that the transmitter knows the statistical information about the channel, we aim to minimize the overall transmit power for achieving the users' probability...
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