3D ray-tracing parallel model for radio-propagation prediction

Ray tracing with multi-radiation transmitters

“…Fast integral equation solvers like the efficient MLFMM algorithm are used by default for this. Due to the fact that MLFMM (Chew et al, 2001) is based on a hierarchical subdivision of the object into levels and groups, it is an ideal method to generate the subtransmitter models. The subtransmitters are represented by the groups (cubic boxes) which hold a part of the object.…”

“…The high efficiency of MLFMM relies on describing the interaction between wellseparated surface currents by a hierarchical plane wave representation of the radiated and received fields instead of computing the interaction of each current with each other current, as done in the classical MoM (Method of Moments). For each group, such a plane wave representation is computed and the field at a receiver group is obtained by appropriate translation operators (Chew et al, 2001).…”

“…A typical example is the use of ray tracing in the design phase of mobile networks. Besides the feasibility of field prediction for such scenarios, further benefits of ray tracing compared to exact field computation methods are the nonexistence of memory and simulation time increase with increasing frequency and an easy parallelization (Cavalcante et al, 2006;Epstein and Rhodes, 2010).…”

“…Ray tracing compatible far-field representations which describe the near-field of a radiator are necessary to solve this problem. Important is the fact that the and the field at a receiver group is obtained by appropria translation operators (Chew et al, 2001).…”