SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Real-time acoustic modeling for distributed virtual environments
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
An improved illumination model for shaded display
Communications of the ACM
Modeling acoustics in virtual environments using the uniform theory of diffraction
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Beam tracing polygonal objects
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Perceptual audio rendering of complex virtual environments
ACM SIGGRAPH 2004 Papers
Fast GPU ray tracing of dynamic meshes using geometry images
GI '06 Proceedings of Graphics Interface 2006
Wave propagation using the photon path map
Proceedings of the 3rd ACM international workshop on Performance evaluation of wireless ad hoc, sensor and ubiquitous networks
Interactive k-d tree GPU raytracing
Proceedings of the 2007 symposium on Interactive 3D graphics and games
Implicit visibility and antiradiance for interactive global illumination
ACM SIGGRAPH 2007 papers
Larrabee: a many-core x86 architecture for visual computing
ACM SIGGRAPH 2008 papers
A real-time beam tracer with application to exact soft shadows
EGSR'07 Proceedings of the 18th Eurographics conference on Rendering Techniques
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Beam tracing can be used for solving global illumination problems. It is an efficient algorithm, and performs very well when implemented on the GPU. This allows us to apply the algorithm in a novel way to the problem of radio wave propagation. The simulation of radio waves is conceptually analogous to the problem of light transport. However, their wavelengths are of proportions similar to that of the environment. At such frequencies, waves that bend around corners due to diffraction are becoming an important propagation effect. In this paper we present a method which integrates diffraction, on top of the usual effects related to global illumination like reflection, into our beam tracing algorithm. We use a custom, parallel rasterization pipeline for creation and evaluation of the beams. Our algorithm can provide a detailed description of complex radio channel characteristics like propagation losses and the spread of arriving signals over time (delay spread). Those are essential for the planning of communication systems required by mobile network operators. For validation, we compare our simulation results with measurements from a real world network.