Real-Time Radio Wave Propagation for Mobile Ad-Hoc Network Emulation and Simulation Using General Purpose Graphics Processing Units (GPGPUs)

Report No. ARL-TR-6764
Authors: Brian J. Henz, David Richie, Song Jun Park, and Dale R. Shires
Date/Pages: May 2014; 28 pages
Abstract: Large scale experimentation and analysis of mobile ad-hoc networks (MANETs) is an expensive and time consuming task. Even with the best planning, the environment at the time of the experiment is unpredictable, making large scale controlled experiments impossible to perform. By simulating the physical medium it is possible to create a repeatable environment. Real-time radio wave propagation path loss calculations are a key component in creating a virtual environment for MANET simulation, emulation and experimentation. There are many algorithms available for computing the radio wave propagation path loss. In this paper we investigate the use of the Longley-Rice model computed using graphics processing units (GPUs). The goal of this effort is to solve the Longley-Rice algorithm in real-time for thousands of transmitters and receivers. We will discuss the choice of the Longley-Rice algorithm, algorithmmodification for GPUs, precision issues and optimization. This method will be demonstrated in the context of a dedicated high performance computing system forMANET simulation, emulation and experimentation.
Distribution: Approved for public release
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Last Update / Reviewed: May 1, 2014