Title page for ETD etd-06212001-154325

Type of Document

Master's Thesis

Author

Kukshya, Vikas

Author's Email Address

vkukshya@vt.edu

URN

etd-06212001-154325

Title

Wideband Terrestrial Path Loss Measurement Results For Characterization of Pico-cell Radio Links at 38 GHz and 60 GHz Bands of Frequencies

Degree

Master of Science

Department

Electrical and Computer Engineering

Advisory Committee

Advisor Name	Title
Dr. Theodore S. Rappaport	Committee Chair
Dr. Brian Woerner	Committee Member
Dr. Tim Pratt	Committee Member

Keywords

horizontal polarization
millimeter wave
pico-cell radio links
vertical polarization
frequency diversity
FSO
LMDS
60GHz
38GHz
rain attenuation
radiowave propagation
wireless communications

Date of Defense

2001-06-21

Availability

unrestricted

Abstract

The advent of Internet based digital services, and bandwidth-intensive business and personal applications has necessitated deployment of broadband network access technologies. Research analysts project that the U.S. market for broadband wireless networking will grow to nearly $2 billion by 2004 and Local Multipoint Distribution Services (LMDS) have enormous potential to emerge as the most reliable and cost-effective solution. However, in order to design and deploy LMDS systems, it is vital for system designers to be able to predict the behavior of mm-waves (28, 38 and 60GHz) during different weather conditions, especially rain. This research attempts to characterize the performance of pico-cell scenario broadband wireless channels by measuring path loss statistics during different weather conditions.

Hardware and software components of a wideband direct-sequence spread spectrum (DSS) channel sounding system, used extensively throughout measurement campaigns, are discussed in detail in this dissertation. The measurement plan comprehensively describes the methodology, logistics, equipment setup, and calibration procedures for propagation measurement campaigns.

Power Delay Profile (PDP) snapshots recorded during measurement campaigns are thoroughly analyzed using the 'Channel Imaging Analysis Suite' and Path Loss as well as Rain Attenuation statistics, calculated from recorded PDP data files, are classified and tabulated on the basis of measurement locations, propagation frequencies and antenna polarizations. Path Loss Exponent values are also calculated and Rain Attenuation statistics are compared with popular rain models. Results from Frequency Diversity measurement campaigns are also presented.

Files

Filename		Size	Approximate Download Time (Hours:Minutes:Seconds)
Filename		Size	28.8 Modem	56K Modem	ISDN (64 Kb)	ISDN (128 Kb)	Higher-speed Access
	00_Thesis_Front.pdf	107.48 Kb	00:00:29	00:00:15	00:00:13	00:00:06	< 00:00:01
	01_Chapter_1.pdf	1.47 Mb	00:06:48	00:03:30	00:03:03	00:01:31	00:00:07
	02_Chapter_2.pdf	715.55 Kb	00:03:18	00:01:42	00:01:29	00:00:44	00:00:03
	03_Chapter_3.pdf	3.15 Mb	00:14:34	00:07:29	00:06:33	00:03:16	00:00:16
	04_Chapter_4.pdf	20.18 Mb	01:33:24	00:48:02	00:42:01	00:21:00	00:01:47
	05_Chapter_5.pdf	652.08 Kb	00:03:01	00:01:33	00:01:21	00:00:40	00:00:03
	06_Appendix.pdf	937.04 Kb	00:04:20	00:02:13	00:01:57	00:00:58	00:00:04
	07_Bibliography.pdf	59.39 Kb	00:00:16	00:00:08	00:00:07	00:00:03	< 00:00:01
	08_Vitae.pdf	7.92 Kb	00:00:02	00:00:01	< 00:00:01	< 00:00:01	< 00:00:01