fundamentals of wireless communication david tse ppt
Fundamentals of Wireless Communication
Ngày tải lên :
20/10/2013, 07:15
... hugemongous.
46
EE 290S: Fundamentals of Wireless Communication
Course Notes
U.C. Berkeley Fall 2002
Instructor: David Tse
Co-written with: Pramod Viswanath
September 18, 2002
fades of the channel (i.e. ... 1000 (30 dB). Stupendous amounts of power would be required for
more reliable communication.
Before we explore further the root cause of the poor performance of this detector,
we note that there ... gain, there is a law of diminishing marginal return: as L increases, the
marginal benefit decreases because of the law of large numbers, eventually converging
to the performance of the AWGN channel....
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Fundamentals of Wireless Communication doc
Ngày tải lên :
11/07/2014, 21:20
... Tradeoff
2: The Wireless Channel
Fundamentals of Wireless Communication, Tse& amp;Viswanath
Fundamentals of
Wireless Communication
David Tse
23
2: The Wireless Channel
Fundamentals of Wireless ... evaluation.
25
2: The Wireless Channel
Fundamentals of Wireless Communication, Tse& amp;Viswanath
2: The Wireless Channel
Fundamentals of Wireless Communication, Tse& amp;Viswanath
2. The Wireless Channel
... delays of 1/W .
2: The Wireless Channel
Fundamentals of Wireless Communication, Tse& amp;Viswanath
1. Introduction
10
2: The Wireless Channel
Fundamentals of Wireless Communication, Tse& amp;Viswanath
Wireless...
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Fundamentals of Wireless Communication potx
Ngày tải lên :
11/07/2014, 21:20
... Hz.
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Primary driver behind wireless communication system
design.
Fundamentals of
Wireless Communication
David Tse
Dept of EECS
U.C. Berkeley
Main story
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Communication over a flat fading ... distance of the
order of the carrier wavelength. This is 0.3 m for Ghz
cellular.
ã
For vehicular speeds, this translates to channel variation
of the order of 100 Hz.
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Primary driver behind wireless ... fading
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Wireless communication typically happens at very high
carrier frequency. (eg. f
c
= 900 MHz or 1.9 GHz for
cellular)
ã
Multipath fading due to constructive and destructive
interference of...
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Identification of Research Needs Relating to Potential Biological or Adverse Health Effects of Wireless Communication pptx
Ngày tải lên :
15/03/2014, 15:20
... president of the National Academy
of Sciences.
The National Academy of Engineering was established in 1964, under the charter
of the National Academy of Sciences, as a parallel organization of outstanding ... development of models of several heights for men, women, and chil-
dren of various ages for use in the characterization of SAR distributions for
exposures characteristic of cell phones, wireless ... development of
models of several heights for men, women, and children of various ages for
use in the characterization of SAR distributions for exposures characteristic
of cell phones, wireless...
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FUNDAMENTALS OF TURBULENT AND MULTIPHASE COMBUSTION ppt
Ngày tải lên :
16/03/2014, 22:20
... D.
Bedford of ONR of the U.S. Navy; Drs. David M. Mann, Robert W. Shaw, Ralph
A. Anthenien, Jr. of ARO; Dr. Martin S. Miller of ARL; Mr. Carl Gotzmer of
NSWC-Indian Head; Dr. Rich Bowen of NAVSEA of ... acknowledge the generosity of Professor Peyman Givi
of the University of Pittsburgh for granting us full permission to use some of his
numerical simulation results of RANS, LES, and DNS of a turbulent jet ... species i M/(tL
3
)
PREFACE xxiii
of multiple chapters of these volumes includes Professor Forman A. Williams
of the University of California-San Diego; Professor Stephen B. Pope, Cornell
University;...
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Fundamentals of Network Security Graphic Symbols pptx
Ngày tải lên :
28/03/2014, 22:20
... CallManager is the software-based call-processing component of the Cisco IP
telephony solution, part of Cisco AVVID (Architecture for Voice, Video and Integrated
Data). The software extends enterprise ...
Figure 1: Policy manager or director icon
One of the greatest challenges of network security is management and monitoring of
hundreds or thousands of VPNs, routers, firewalls, and intrusion detection ... Hubs are
typically used for small office and home office environments.
Cisco offers the 1538 Hub series. Other network vendors provide a larger selection of
Hub models and port configurations....
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Báo cáo hóa học: " Research Article Green Networking for Major Components of Information Communication Technology Systems" pptx
Ngày tải lên :
21/06/2014, 22:20
... Kilowatt-
hour of electricity is equivalent to 0.537 Kg of CO
2
[7].
Therefore, increasing the efficiency of the power supply of
the network switch from 80% to 90% will result in a saving
of 3866 Kg of CO
2
emissions ... assessed in terms of energy
efficiencies and their associated benefits in minimizing the
environmental impact of ICT. Some of the goals of Green
Networking include
(i) reduction of energy consumption,
(ii) ... consumption,
(ii) improvement of energy efficiency,
(iii) consideration of the environmental impact of net-
work components from design to end of use,
(iv) integration of network infrastructure and...
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Project Gutenberg’s The Foundations of Geometry, by David Hilbert ppt
Ngày tải lên :
28/06/2014, 19:20
... points of a segment and the system
of real numbers. However, in what is to follow, no use will be made of the “axiom of
completeness.”
Project Gutenberg’s The Foundations of Geometry,
by David ... 43
The
Foundations of Geometry
BY
DAVID HILBERT, PH. D.
PROFESSOR OF MATHEMATICS, UNIVERSITY OF G
ă
OTTINGEN
AUTHORIZED TRANSLATION
BY
E. J. TOWNSEND, PH. D.
UNIVERSITY OF ILLINOIS
REPRINT EDITION
THE ... second part of the axiom of
parallels, in its original form, follows as a consequence of theorem 8.
The axiom of parallels is a plane axiom.
Đ 6. GROUP IV. AXIOMS OF CONGRUENCE.
The axioms of this...
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Fundamentals of Electrical Drivess - Chapter 1 pptx
Ngày tải lên :
09/08/2014, 06:22
... n
coil
i
coil
must be equal to the sum
of the magnetic potentials u
A
and u
B
. The reluctances R
A
and R
B
of the
center and side legs of the ‘E’ core require an estimation of the area of the flux
which crosses ... half
that of the center leg if flux fringing is ignored.
An example of the absolute flux density plot as function of the position along
an imaginary line (the length of which corresponds to the width of ... ring of
width ‘h’ placed on the middle of the airgap at radius r + g/2. An observation
of figure 1.17 learns that the flux crossing the airgap has a larger cross-sectional
10 FUNDAMENTALS OF ELECTRICAL...
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Fundamentals of Electrical Drivess - Chapter 2 ppt
Ngày tải lên :
09/08/2014, 06:22
... 40 FUNDAMENTALS OF ELECTRICAL DRIVES
i
Psi
u
i(psi)
dat
To Workspace
Sine Wave
100
R
1
s
Clock
Figure 2.15. Simulink model of non-linear inductance with sinusoidal excitation function
of output ... function of the module is described as i (ψ),
which expresses the current of the coil as a function of the coil flux. The
terminal equation (2.8) remains unaffected by the introduction of saturation,
only ... implementation of generic circuits (such as those discussed in this chap-
ter) in Simulink allows us to study models for a range of conditions. The use of
a sinusoidal excitation waveform is of most...
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Fundamentals of Electrical Drivess - Chapter 5 ppt
Ngày tải lên :
09/08/2014, 06:22
... observationof figure 5.15
learns thatduringthe firstquarter (0→5ms) ofthecycle, energy from thebattery
source is supplied to the capacitor and inductance. During the second part of
142 FUNDAMENTALS OF ... Concept of Real and Reactive Power 123
Figure 5.2. Phasor diagram
of phasors i
,u
An observation of figure 5.2 learns that we can also represent the voltage
phasor in terms of the vector sum of the ... calculation of the real power of for example the R-L-u
e
circuit is defined
by equation (5.30). Substitution of equation (5.42) leads to the phasor based
form namely
P = {u
(i)
∗
} (5.43)
Concept of...
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Fundamentals of Electrical Drivess - Chapter 6 pptx
Ngày tải lên :
09/08/2014, 06:22
... analysis is to be given
in the form of an m-file. An example of an m-file which shows this analysis
is given at the end of this tutorial. The results in the form of the variables
|i
1
|, |i
2D
|, ... load resistance of the delta connected load is set to
R
L
= 20Ω. An ITF winding ratio of k =2is assumed.
The simulation is to be run for a period of 0.4s, using a ‘step-size’ of 10
−5
s
and ‘solver’ ... to the orientation of the primary windings of the transformer, as
can be explained by considering the two-phase model in a single phase form.
If we ignore, for the purpose of this discussion,...
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Fundamentals of Clinical Ophthalmology - part 3 ppt
Ngày tải lên :
10/08/2014, 00:20
... tip.
Cavitation
This occurs just ahead of the tip of the phaco
probe and results in an area of high temperature
and high pressure, causing liquefaction of the
nucleus. The process of cavitation is illustrated ... difficulties
of forward pressure with those of a lack of red
reflex. Logically, therefore, all of the above
mentioned advice should be observed. A forceps
technique is preferable because the cortex is
often ... there is the
cutting effect of the tip and, second, the
production of cavitation just ahead of the tip.
Mechanical cutting
This occurs beccause of the jackhammer effect
of the vibrating tip and...
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Fundamentals of Clinical Ophthalmology - part 5 ppt
Ngày tải lên :
10/08/2014, 00:20
... charge of the molecular
components of a viscoelastic primarily affects the
type and extent of bonds between other molecules
and adjacent intraocular structures. Chain length
determines the degree of ... Validation of laser Doppler
interferometric measurements in vivo of axial eye length
and thickness of fundus layers in chicks. Curr Eye Res
1996;15:691–6.
17 Fedorov SN, Kolinko AI. A method of calculating ... This
prevents injection of air bubbles into the anterior
chamber during IOL delivery. The use of high
viscosity agents has been implicated in the failure
of injection devices and cracking of the injection
cannula...
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