How the transmit/receive antennas' polarizations affect indoor wireless radiowave propagation's temporal spreading

Pao Yue-kong Library Electronic Theses Database

How the transmit/receive antennas' polarizations affect indoor wireless radiowave propagation's temporal spreading

 

Author: Sung, Chun Ho
Title: How the transmit/receive antennas' polarizations affect indoor wireless radiowave propagation's temporal spreading
Degree: M.Sc.
Year: 2014
Subject: Wireless communication systems.
Radio wave propagation.
Antennas (Electronics)
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Electronic and Information Engineering
Pages: viii, 40 leaves : illustrations (chiefly color) ; 30 cm
InnoPac Record: http://library.polyu.edu.hk/record=b2680820
URI: http://theses.lib.polyu.edu.hk/handle/200/8134
Abstract: As a transmitted signal propagates through a wireless environment via different propagation paths (a.k.a."multipaths") with various propagation delays, the transmitted signal would be temporally spread when received. This temporal spreading distorts the transmitted signal, and poses a fundamental problem to be addressed in the design of the transceiver. This temporal spreading has an underlying electromagnetics mechanism that depends on polarization, obviously. The open literature, however, offers only limited empirical data on how this indoor temporal spreading is affected by a change in the polarization of the transmit-antenna and/or the receive-antenna, with all other factors unchanged. This dissertation investigates how the polarization state of an indoor transmitter-receiver pair would affect the mean delay and the root-mean-square (RMS) delay spread. This investigation is via a polarization-sensitive ray-tracing software called "CINDOOR" that is based on three-dimensional geometrical optics and the uniform theory of diffraction (GO/UTD), synergizing "image theory" and the "binary space partitioning" algorithm. CINDOOR simulations have been empirically verified to closely approximate physically collected measurements, even in the presence of cross-polarization. This dissertation has already been submitted to a well-known international conference called "2013 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting, July 7-13, 2013 in Orlando, Florida" and has been subsequently accepted. The formal acceptance letter and the scheduling of the conference are enclosed in the appendix. Although this dissertation has been accepted by the conference, it was never presented at the conference, hence NOT included in that conference's official proceedings. This is because there is no funding to travel to that conference held in the United State of America.

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