A ray tracing algorithm using the discrete prolate spheroidal subspace

摘要: Ray tracing (RT) is an accurate propagation prediction tool that has been widely used to simulate channel characteristics in indoor environments. To date, the developed RT includes not only specular reflection, penetration through dielectric blocks and diffraction, but also diffuse scattering mechanisms. The accuracy, provided by a detailed modeling of environment, comes at cost high computational complexity, which directly scales with number paths considered. We are interested simulating radio conditions for mobile terminal, communicating frame based communication system indoors several fixed nodes. This shall be obtain position terminal scenario. Therefore, correlated temporal spatial evolution impulse response utmost concern. In this paper, we propose method significantly reduce complexity using projection all on subspace spanned two-dimensional discrete prolate spheroidal (DPS) sequences. With can reduced more than one order magnitude scenarios. accuracy our low-complexity DPS algorithm verified numeric simulations.