The Mprg Research Program - Some Recent Propagation Results
نویسنده
چکیده
Theodore S. Rappaport Mobile and Portable Radio Research Group Bradley Department of Electrical Engineering Virginia Polytechnic Institute and State University Blacksburg, VA 24061-0111 The Mobile and Portable Radio Research Group (MPRG) is a relatively new research group at Virginia Tech. Founded in the Spring of 1990, it is conducting basic and applied research in the areas of radio propagation measurement and prediction, communication system design using real-world channel models, and digital simulation of various modulation, diversity, and equalizer techniques. This paper provides an overview of the MPRG propagation research, and provides references for readers ' interested in further details of our work.
منابع مشابه
An Improved 3D Ray Launching Method for Wireless Propagation Prediction
3D ray tracing produces accurate, deterministic channel models for wireless system design. Increasing a ray tracing algorithm's ability to identify correct propagation paths reduces the kinematic errors of a simulation. This paper presents a new 3D ray tracing technique that reduces kinematic errors associated with ray launching algorithms. This work is sponsored by the NSF Presidential Faculty...
متن کاملSite Specific Propagation Prediction Models for PCS Design and Installation
This paper presents new site specific propagation prediction methods for emerging personal communication system (PCS) services which will offer high capacity in urban settings. The propagation prediction models, composed of three dimensional dif· fracti"on and ray tracing, are being implemented as software tools on SUN computer workstations. A Geo'graphical Information System (GIS) software pac...
متن کاملThe regulation of ciliary beat frequency by ovarian steroids in the guinea pig Fallopian tube: interactions between oestradiol and progesterone.
Ciliary beat frequency (CBF) was measured in slice preparations of the Fallopian tube fimbria, using videomicroscopy with a high-speed (500 Hz) camera in guinea pigs that were treated with β-oestradiol benzoate (βE2B) and medroxy progesterone (mPRG). In non-ovulating guinea pigs at 4 weeks of age, the CBF of the fimbria was high (17.8 Hz). In sexually mature guinea pigs (12-16 weeks of age) wit...
متن کاملWireless Channel Prediction in a Modern Office Building Using an Image-Based Ray Tracing Method
In the last few years, many measurements were made to . characterize indoor wide-band channels [1]-[4]. Based on the measurement results; we have some rough ideas about the path loss and rms delay spread values. in different indoor envirooments. However, more accurate signal prediction techniques are necessary to provide optimum capacity and maximum coverage for future indoor wireless communica...
متن کاملMPRG Participates in Raytheon DARPA Project
The 10th Annual Virginia Tech Symposium on Wireless Personal Communications , held in Blacksburg June 14-16, featured what one participant described as " the strongest, most diverse technical program yet. " As always, the three-day event followed the MPRG's annual Industrial Affiliates Board meeting, in which industry representatives receive detailed briefings and demonstrations of current rese...
متن کامل