High Performance Computation of the Hybrid MoM / FDTD Code for health hazardous effects due to Mobile Base Station Radiation

With the rapid increase in wireless applications, the radiation from antennas has severe health hazards on human body if appropriate precautions are not taken into considerations. There is a need for measuring or calculating the specific absorption rate, SAR, inside the human body due to the illumination of the human body with the waves impinging from antennas’ base stations. Instead of measuring the electromagnetic power, a simulation package is proposed to replace these measurements. The simulation is cost effective method that doesn’t need measuring equipment or specialists. The moment method is one of the most efficient numerical techniques for antenna analysis. But it may be difficult and time consuming to simulate scattering inside an inhomogeneous dielectric material such as human body. The scattered field from the antenna simulated using the Method of Moment is applied as an incident wave in the FDTD simulator which is more efficient in SAR calculations in human body. Due to the large proposed problem size, these numerical techniques have heavily computational loads that necessitates parallel processing technique to get the results with reasonable consuming time. The proposed algorithm helps people who live near base stations especially in ancient places where streets are too narrow and buildings are too close to each other. It would also be useful for workers in these systems’ maintenance and installation. Different HPC platforms are applied as 4 node cluster contains 16 core server with MPI middleware. The code is also run on 64 cores Bright Beowulf cluster. The SAR calculation due to one of the base stations antennas is introduced for code verification. Results comparison and verification are investigated.