Reference no: EM131244716
INTRODUCTION TO COMMUNICATIONS SYSTEMS ASSIGNMENT
1. The continuous signal whose spectrum is shown below is quantized, sampled, and transmitted using a baseband PCM system.
a) If each data sample must be known to within ±1% of the peak-to-peak full-scale value, how many binary symbols must each transmitted digital word contain?
b) Assuming that the signal is sampled at the Nyquist rate, estimate the bandwidth of the resulting PCM signal.
2. You wish to transmit an analog signal with a bandwidth B = 15 kHz via a baseband PCM code employing 7 bipolar pulses per sample.
a) Sketch a reasonable receiver up to the analog output.
b) Which types of synchronization are needed to implement the receiver?
3. Consider three ways of communicating one of 60 messages, each of which can be regarded as an L - level phase modulation technique. The first method is to encode in a binary code where each sinusoidal pulse has a phase of 0 or 180 degrees (PSK). The second method is to encode in a tertiary or 3 - level code, where each pulse has a phase of 0, 120, or -120 degrees. The final method is to encode in a 4 - level code, where each pulse has a phase of 0, 90, 180, or 270 degrees (QPSK).
a) How many pulses per message are needed for each scheme?
b) Calculate the necessary bandwidth for each scheme. Which scheme would be useful when bandwidth is at a premium?
c) How would you store the decisions on each pulse?
d) Discuss the practical hardware difficulties for each scheme.
e) Could you use differential techniques for the 3 - and 4 - level codes as well as DPSK?
|
Define whether or not there cost benefits to cloud computing
: In a one- to two-page paper (250-500 words), discuss whether or not there are cost benefits to cloud computing using specific examples. Be sure to include at least three reference sources.
|
|
Explain what is the companys mission statement
: What is the company's mission statement? What is the company's vision statement? What role do these have on the way the business operates? Do the company's actions seem to align to their vision and mission statements?
|
|
Using gradient series factor
: On Juan’s 26th birthday, he deposited $5,000 in a retirement account. Each year thereafter, he deposited $1,000 more than the previous year. Using a gradient series factor, determine how much was in the account immediately after his 35th deposit if:?..
|
|
Find the present worth of the cash flow diagram
: Find the present worth of the following cash flow diagram if i = 8%.
|
|
Sketch a reasonable receiver up to the analog output
: INTRODUCTION TO COMMUNICATIONS SYSTEMS ASSIGNMENT. You wish to transmit an analog signal with a bandwidth B = 15 kHz via a baseband PCM code employing 7 bipolar pulses per sample. Sketch a reasonable receiver up to the analog output
|
|
Most large urban areas have mass transit and railway system
: Most large urban areas have a mass transit and railway system that facilitates travel within the city, and in some cases, between the city and its neighboring areas and suburbs. What are the benefits and costs of maintaining a mass public transport s..
|
|
What is the profit maximizing level of output
: A monopoly can produce at constant marginal and average cost of 5. The firm faces a market demand curve given by Q = 53 - P. Hint: Graphing the problem may be useful for parts c. and d. What is the profit maximizing level of output? What is the price..
|
|
Why this is happening using supply and demand curves
: Graph and explain: If you do not know how to use the computer to do this, do it by hand then scan it and send it by e-mail. You can use any software package you like. It is January 2015 and the gas price is dropping dramatically. I just saw is at Cos..
|
|
Calculate the npv and irr of the blended winglet project
: In estimating the relevant cash flows, pay special attention to overhead allocation expense. Explain why this is a cash flow for the Winglet Project or why it is not. Calculate the NPV and IRR of the Blended Winglet Project
|