Wireless Local Loop A.Balaji , Timothy A. Gonsalves , R. Kumar Dept. of Computer Science and Engineering Indian Institute of Technology Madras Chennai 600 036 Email: {abala, tag, rkumar}@tenet.res.in September 1998 Abstract The traditional wired local loop used to connect each telephone subscriber to the nearest exchange is expensive and unreliable. Wireless Local Loop (WLL) systems largely eli...

A Philips low voltage high performance monolithic FM/IF system, the SA639 is introduced to meet the increasing demand for high speed digital wireless PCS applications. In order to assist the system design, a SA639-based performance evaluation board has been developed according to the Digital European Cordless Telephone (DECT) specifications. This application note presents a detailed description...

1 Introduction This Report identifies the key adaptive antenna concepts and describes their technical aspects. The traditional approach to the analysis and design of wireless systems has generally been to address antenna systems separately from other key systems aspects, such as: Adaptive antenna technologies are best implemented with an overall system approach, where all the system components,...

OBJECTIVES To study the use of cellular and cordless telephones and the risk for malignant brain tumours. METHODS Two case-control studies on malignant brain tumours diagnosed during 1997-2003 included answers from 905 (90%) cases and 2,162 (89%) controls aged 20-80 years. We present pooled analysis of the results in the two studies. RESULTS Cumulative lifetime use for >2,000 h yielded for ...

PURPOSE Dental professionals suffer from a high prevalence of work-related musculoskeletal disorders (MSD). Dental hygienists in particular have a high prevalence of pain in the forearms and hands. The objective of this study was to compare 1 cordless handpiece to 2 corded handpieces during simulated tooth polishing in terms of the muscle loads (recorded as electromyography (EMG) activity), dur...

BACKGROUND A previous study found an association between maternal cell phone use during pregnancy and maternal-reported child behaviour problems at age 7. Together with cell phones, cordless phones represent the main exposure source of radiofrequency-electromagnetic fields to the head. Therefore, we assessed the association between maternal cell phone and cordless phone use during pregnancy and...

IEEE 802.11b compliant WLAN technology is increasingly used for cordless telephone services. Often, a WLAN phone is moved during a call. In the present paper we explore to what extent slow user motion influences the wireless link quality. We conducted extensive measurements with speech over commercial WLAN equipment using an experimental environment enforcing controlled motion. Our experiments ...