BACKGROUND We evaluated if exposure to RF-EMF was associated with reported quality of sleep in 2,361 children, aged 7 years. METHODS This study was embedded in the Amsterdam Born Children and their Development (ABCD) birth cohort study. When children were about five years old, school and residential exposure to RF-EMF from base stations was assessed with a geospatial model (NISMap) and from i...

The problem to track time-varying parameters in cellular radio systems is studied, and the focus is on estimation based only on the signals that are readily available. Previous work have demonstrated very good performance, but were relying on analog measurement that are not available. Most of the information is lost due to quantization and sampling at a rate that might be as low as 2 Hz (GSM ca...

This study reported the investigation of Radio Frequency (RF) signal propagation Global System for Mobile Communications (GSM) coverage in Emmanuel Alayande College Education (EACOED), Oyo, Oyo State, Nigeria. The aims at amplifying quality service and augment end users' sensitivity wireless services operation. drive test method is adopted with estimation level received strength. Network Cell I...

A novel secure remote device access procedure and control system is presented in this paper. The user can send DTMF tones to access the control panel of the robot, which is connected to a GSM module. The DTMF tones can be sent by any cellular phone with any existing operator. The advantage of this system is the use of GSM technology for communication and any GSM mobile phone can be employed. Fu...

A number of serious non thermal biological effects, ranging from changes in cellular function like proliferation rate changes or gene expression changes to cell death induction, decrease in the rate of melatonin production and changes in electroencephalogram patterns in humans, population declinations of birds and insects, and small but statistically significant increases of certain types of ca...

Mobile phone operators need to plan and schedule field force personnel for maintenance and repair tasks on mobile phone base stations across the country on a daily basis. In this paper, we will introduce the field force scheduling problem with priorities. Motivated by the rising popularity of mobile field force management solutions, we compare online and offline heuristics as well as hybrids to...

Mobile communication is an essential part of our daily lives. Therefore, it needs to be secure and reliable. In this paper, we study the security of feature phones, the most common type of mobile phone in the world. We built a framework to analyze the security of SMS clients of feature phones. The framework is based on a small GSM base station, which is readily available on the market. Through ...