Ear prosthesis evaluation: specific absorption rate levels in the head due to different angles and frequencies of electromagnetic exposure

This study presents a numerical analysis of the specific absorption rate in a head model exposed to electromagnetic fields when a real implant-retained prosthetic ear is attached to the side of the head. A set of dipole antennas operating at 900, 1800 and 2100 MHz were rotated to investigate the effect of frequency and polarisation. The maximum average 1 and 10 g specific absorption rates (SAR) have been presented to show the relative enhancement factor of the implant. A comparison of the mass-averaged SAR in the head with the implanted ear prosthesis shows that the 1 g SAR is doubled at 900 and 1800 MHz with different polarisations

Improving Performance-limited Interference System with Coordinated Multipoint Transmission

This paper describes an overview of the key component in coordinated multipoint in the context of LTE-Advanced which includes architectures, approaches, and main challenges. Most of the ideas presented are presently being studied and may vary throughout the standardization work. A system model is proposed to employ the cooperative communication in interference-limited scenario which may help to improve the cell-edge performance