Summarize in your own understanding what would be the requirement in LTE design for DL and UL CoMP to work as expected.
In: Electrical Engineering
WHAT ARE THE KEY CONCEPTS YOU NEED TO KNOW ABOUT THE IT NETWORK ENGINEERING?
PLEASE EXPLAIN THE GENERAL CONCEPTS YOU NEED TO KEEP IN MIND AND BEGIN WITH (Port configurations, linux environments, or the topologies)
PLEASE GIVE SOME GOOD REFERENCES AND BOOKS TO LOOK INTO FOR THE EXAMS FOR COMPTIA SECURITY + EXAM
PLEASE ALSO RECOMMEND THE CERTIFICATION COURSES OR PREPARATION COURSES THAT CAN ACE THE EXAMS
THE CompTIA CySA+ (CompTIA IT Certifications) CONSISTS OF
- I.T FUNDEMENTALS EXAM
- A+ EXAM
- Network+ EXAM
- Security+ EXAM
, etc.
PLEASE GIVE THE BOOKS OR REFERENCES OR LINKS I COULD USE
FOR THE GOOD REFERENCES FOR PREPARING AND STUDYING
EXAMS
IT SEEMS THERE ARE ONLINE PROGRAMS AND BOOKS I COULD USE
PLEASE GIVE AND SHARE YOUR THOUGHTS ON THE BEST REFERENCES FOR THE BEIGNNER WHO HAS LITTLE KNOWLEDGE ABOUT THE IT CONCEPTS AND RECOMMEND THE ONLINE PROGRAMS WHAT YOU WOULD THINK IT IS GOOD TO USE:
BOOKS (COOK BOOKS, EASILY UNDERSTANDABLE CONCEPTS, ETC)
ONLINE PROGRAMS OR CLASSES
I WANT SOME RECOMMENDATIONS OF THE REFERENCES THAT CONSISTS OF CONCEPTS EXPLAINED IN EASY STEPS AND PRACTICE PROBLEMS AND HELP PASSING THE EXAMs
PLEASE ANSWER THE QUESTION IF YOU KNOW YOU HAVE PRIOR KNOWLEDGE ON IT ENGINEERING OR SOMEWHAT CLOSE
In: Electrical Engineering
What is continuous monitoring. How can this be applied to conserve energy?
In: Electrical Engineering
Engineering Ethics Course
Codes of Ethics Assignment
Review the Intel Pentium Chip case (Case below) and answer
following questions:
1. Which statements in IEEE’s code of ethics do you believe Intel
violated in this case? For each statement you select, justify your
selection with an explanation.
2. Given that Intel perceived that the chip flaw was insignificant,
and that flaws are likely to occur in early versions of a chip,
what approach do you think Intel should have followed as they put
the chips on sale?
The Intel Pentium® Chip Case
In late 1994, the media began to report that there was a flaw in the new Pentium microprocessor produced by Intel. The microprocessor is the heart of a personal computer and controls all of the operations and calculations that take place. A flaw in the Pentium was especially significant, since it was the microprocessor used in 80% of the personal computers produced in the world at that time.
Apparently, flaws in a complicated integrated circuit such as the Pentium, which at the time contained over one million transistors, are common. However, most of the flaws are undetectable by the user and don’t affect the operation of the computer. Many of these flaws are easily compensated for through software. The flaw that came to light in 1994 was different: It was detectable by the user. This particular flaw was in the floating-point unit (FPU) and caused a wrong answer when double-precision arithmetic, a very common operation, was performed.
A standard test was widely published to determine whether a user’s microprocessor was flawed. Using spreadsheet software, the user was to take the number 4,195,835, multiply it by 3,145,727, and then divide that result by 3,145,727. As we all know from elementary math, when a number is multiplied and then divided by the same number, the result should be the original number. In this example, the result should be 4,195,835. However, with the flawed FPU, the result of this calculation was 4,195,579 [Infoworld, 1994]. Depending on the application, this six-thousandths-of-a-percent error might be very significant.
At first, Intel’s response to these reports was to deny that there was any problem with the chip. When it became clear that this assertion was not accurate, Intel switched its policy and stated that although there was indeed a defect in the chip, it was insignificant and the vast majority of users would never even notice it. The chip would be replaced for free only for users who could demonstrate that they needed an unflawed version of the chip [Infoworld, 1994]. There is some logic to this policy from Intel’s point of view, since over two million computers had already been sold with the defective chip.
Of course, this approach didn’t satisfy most Pentium owners. After all, how can you predict whether you will have a future application where this flaw might be significant? IBM, a major Pentium user, canceled the sales of all IBM computers containing the flawed chip. Finally, after much negative publicity in the popular personal computer literature and an outcry from Pentium users, Intel agreed to replace the flawed chip with an unflawed version for any customer who asked to have it replaced.
It should be noted that long before news of the flaw surfaced in the popular press, Intel was aware of the problem and had already corrected it on subsequent versions. It did, however, continue to sell the flawed version and, based on its early insistence that the flaw did not present a significant problem to users, seemingly planned to do so until the new version was available and the stocks of the flawed one were exhausted. Eventually, the damage caused by this case was fixed as the media reports of the problem died down and as customers were able to get unflawed chips into their computers. Ultimately, Intel had a write-off of 475 million dollars to solve this problem.
What did Intel learn from this experience? The early designs for new chips continue to have flaws, and sometimes these flaws are not detected until the product is already in use by consumers. However, Intel’s approach to these problems has changed. It now seems to feel that problems need to be fixed immediately. In addition, the decision is now based on the consumer’s perception of the significance of the flaw, rather than on Intel’s opinion of its significance.
Indeed, similar flaws were found in 1997 in the early
versions of the Pentium II and Pentium Pro processors. This time,
Intel immediately confirmed that the flaw existed and offered
customers software that would correct it. Other companies also seem
to have benefited from Intel’s experience. For example, Intuit, a
leading manufacturer of tax preparation and financial software,
called a news conference in March of 1995 to apologize for flaws in
its TurboTax software that had become apparent earlier in that
year. In addition to the apology, they offered consumers
replacements for the defective software.
In: Electrical Engineering
In an ADC, assume that Vref is connected to 2.3 V. Find the following. Assume an 9-bit option.
a-) Step Size = Answer mV (answer must have 3 digits after the decimal point, rounded).
b-) D8..D0 values if Vin = 1.39V Answer (answer should be rounded and then converted)
c-) D8..D0 values if Vin = 2.17V Answer (answer should be rounded and then converted)
d-) Vin if D8..D0 values are 001010101 => Answer V (answer must have 3 digits after the decimal point, rounded).
e-) Vin if D8..D0 values are 111011011 => Answer V (answer must have 3 digits after the decimal point, rounded).
In: Electrical Engineering
1-Find another example for any control technique
(torque, position, velocity, etc.) that can be applied with servo
motors to show the superiority of one
control method to the other. Explain deeply.)
2-(Describe in detail how the sinusoidal PWM signal used to
drive AC servo motors is
generated.)
In: Electrical Engineering
Electromagnetic theory 2
(a) Obtain the expressions for Ex and Ey for the transverse electric case and show that they satisfy the condition Ell *= 0 on the boundary.
(b) A rectangular metallic waveguide has dimensions, a = 3.0 cm and b = 4.0 cm. Find out the modes (TE and TM) in which a free space wavelength of 4.5 cm could propagate through it.
(c) A waveguide has an inside dimension of 6cm x 1cm. Find the first 3 modes and its cut-off frequencies. In the situation where you would want to have only one mode of propagation, what will be the proposed frequency range?
EII= E parallel
In: Electrical Engineering
0. We are designing an ECG circuit that has three parts, including (1) Instrumentation Amplifier (2) High-pass filter (3) Low-pass filter. Each part should have the gain of 10, so the entire circuit should have the gain of 1000. We will add a LED driver at the end to be lit when detecting heartbeat.
Design
1. Design a differential amplifier with the gain equal to one and use 10k? for its feedback resistor. Calculate the resistor value on the non-inverting end with the actual measurement of all other resistors and combine up to 4 resistors to achieve the best CMRR.
2. Add the non-inverting front-end circuit to the differential amplifier designed in step 1 to create an instrumentation amplifier. The instrumentation amplifier requires a gain of 10.
In: Electrical Engineering
A: Design a full bridge three phase/three phase cyclo-convertor showing its principle of operation using graphical representation
In: Electrical Engineering
Generate a baseband message signal m(t) to be a square
waveform of duration 120 msec and amplitude
1 V. The sampling frequency is -
= 10 . Use a carrier of amplitude 1 and frequency 600 Hz and
perform the following modulation/demodulation operations:
1. DSB-SC
a. modulation of the message signal m(t)
b. coherent demodulation, assuming that the local carrier @ the
receive-side is perfectly
synchronized in frequency and phase with the transmit-side
carrier.
c. lowpass filtering of the demodulated output and signal
recovery
( )
2. AM
a. modulation
b. noncoherent demodulation (for ex. you can use a rectifier)
c. lowpass filtering of the demodulated output and signal
recovery
( )
3. SSB-SC
a. modulation (using Hilbert transform method preferred)
b. coherent demodulation, assuming that the local carrier @ the
receive-side is perfectly
synchronized in frequency and phase with the transmit-side
carrier.
c. lowpass filtering of the demodulated output and signal
recovery
( )
For each modulation scheme, calculate the energy of the estimation
error : () = (
( ) −
( ))
over the signal’s duration T, and compare all modulation
schemes.
Plot in both time and frequency domains:
1. Message signal.
For each of the 3 above cases you should plot in both time and
frequency domains:
2. Modulated signal.
3. Demodulated signal.
4. Recovered signal
( ).
You will need to design the proper FIR lowpass filter (LPF) (filter
order and cutoff frequency), to filter
the demodulated signal, and produce the recovered signal
( ).
For your report, please create a word document to include all
results and Matlab plots and code.
In: Electrical Engineering
q1) using Matlab make a code that allows a user to enter a function like fractional function and cubic liner function then the Matlab send a domain, range, continuity
In: Electrical Engineering
Briefly Give one to two line logical answer to the following Question
(a)IN PCM How the parameters fieldlity bandwidth and time delay can be traded off?
(b)If the number of bits in signal to noise ration is increased what will be its effect?How to reduce signal to noise ratio?If number of bits are incraesed signal to noise ratio is decrease?
(c)non unform quantization is better than uniform quantization?
(d)Why is it often preffered to use units of normalized bandwidth,WT,comapred with bandwidth alone?
(e)What is the dfference between PCM andPAM?Which one is better?
(f) For a known signal space how you can determine the number of correlators used at the receiver ?
(g) Which type of binary signaling you prefer to use in digital communication among unipolar , antipodal and orthogonal ?
In: Electrical Engineering
In: Electrical Engineering
A 5-kW, 250-V shunt motor has an armature resistance of 0.1 ?
and a field-circuit resistance of 80 ?. When the motor is operating
at rated voltage, the speed is observed to be 1200 r/min when the
machine is loaded such that the armature current is 30 A. In order
to protect both the motor and the dc supply under starting
conditions, an external resistance will be connected in series with
the armature winding (with the field winding remaining directly
across the 250-V supply). The resistance will then be automatically
adjusted in steps
so that the armature current does not exceed 300 percent of rated
current. The step size will be determined such that, until all the
external resistance is switched out, the armature current will not
be permitted to drop below 150 percent of rated current. In other
words, the machine is to start with 300 percent of rated armature
current and as soon as the current falls to 150 percent of rated
current, sufficient series resistance is to be cut out to restore
the current to 300 percent. This process will be repeated until all
of the series resistance has been eliminated.
i. Find the maximum value of the series resistance.
ii. How much resistance should be cut out at each step in the
starting operation and
iii. At what speed should each step change occur?
iv. Plot the following graphs; time versus speed, time versus the
generated Voltage (Ea) and time versus the armature current.
In: Electrical Engineering