Cart (Loading....) | Create Account
Close category search window
 

Space and frequency diversity measurements of the 1.7 GHz indoor radio channel for wireless personal communications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Todd, S.R. ; Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada ; El-Tanany, M.S. ; Mahmoud, S.A.

The authors empirically evaluate three diversity schemes for indoor wireless personal communications. Measurements at 1.75 GHz, using a four-branch diversity receiver and selection combining (SC), are analyzed to determine the effects of physical parameters, signal fading statistics and a switched combiner on diversity performance. Results are obtained from numerous locations and over 800 measurements. These indicate that antenna separations of as small as a quarter wavelength provide significant diversity gains. For similar performance, frequency diversity requires separations of at least 5 MHz. A 4-branch combination of these schemes (hybrid diversity) yields on average a 16 dB improvement at 99% signal availability. The local mean variations between branches in these measurements is ±3 dB but this has a negligible effect on average diversity performance using ideal SC. The diversity gains are shown to have a variability of ±2.5 dB. Switch and stay combining (SAS), a form of SC, is sensitive to the input fading statistics and to switch delay. These variations in diversity performance should be considered for a worst case link design

Published in:

Universal Personal Communications, 1992. ICUPC '92 Proceedings., 1st International Conference on

Date of Conference:

29 Sep-1 Oct 1992

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.