Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Network & Security Expert

problem1)

A composite signal is composed of three sine waves. First wave has frequency of 1 Hz, phase shift of 0 and maximum amplitude of 5 volts; second wave has frequency of 1 Hz, phase shift of 180 degrees ( π radians) and maximum amplitude of 2 volts, and third wave has frequency of 2 Hz, phase shift of 0 and maximum amplitude of 1 volt.

a) find out bandwidth of this composite signal? Is this periodic or non-periodic signal?
b) find out value of the voltage of this composite signal at each of the following two points of time: i) t = 0.25 second and ii) t = 0.75 second.
c) Draw time domain plot in a interval t= 0 to t= 1 second for the three sine waves, then plot approximate shape of the composite signal in this interval.

problem2)

Periodic composite signal contains sine harmonics with frequencies from 10 KHz to 80 KHz. The fundamental frequency of the first harmonic of this composite signal is 10 KHz and all harmonics in the range 10-80 KHz are included in the composite signal. The signal is transmitted over a channel that has attenuation of - ∞ dB for all frequencies less than or equal to 40 KHz and attenuation of -3 dB for all frequencies larger than 40 KHz. All harmonics have a maximum power of 10 milliwatts (mW) at the sender’s side of the channel.

a) What is the bandwidth of the signal at the sender’s side of the channel?
b) How many harmonics reach the receiver?
a) What is the bandwidth of the signal at the receiver’s side of the channel?
c) What is the maximum power (in mW) of each received harmonic?

problem3)

Consider the channel between sender S and receiver R.

a) Channel has bandwidth of 20 KHz and signal-to-noise ratio SNR = ∞ . find out bit rate of this channel using a digital signal which has four voltage levels.
b) Channel has bandwidth of 8 KHz and a signal-to-noise ratio SNR = 63. find out theoretical highest bit rate (i.e., capacity) of this channel.
c) Sender S transmits fixed length packets to receiver R over a link at the speed of 1000 packets/second. The one-way propagation delay of this link is 0.01 second. If the cable of the link is cut, all packets in transit on the link are lost. What are the possible values of the number of lost packets when the cable is cut?

problem4)

Non-periodic analog signal has spectrum with frequencies between 0 and 5000 Hz. Signal is sampled at the Nyquist sampling rate which guarantees the successful reconstruction of an analog signal. At each sample point, the intensity of the signal is measured and is encoded as an integer number of length 8 bits.

a) What is the bit rate of the traffic generated by the digitized signal?
b) Assume the digitized signal is transmitted as a stream of packets from the sender to the  receiver over two hops (links) each of which has an attenuation of -1.5 dB. The power of transmission at the sender’s side is 50 milliwatts. What is the power of the signal at the receiver’s side?
c) Assume the one-way propagation delay for the first link in part (b) is 100 milliseconds. Using the transmission speed (bit rate) obtained in part a, what is the value of the traffic volume (in bits) that fills the first link?

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M9449

Have any Question? 


Related Questions in Computer Network & Security

Short paperwan technologies paper research point-to-point

Short Paper WAN Technologies Paper: Research Point-to-Point (dedicated), Packet Switched, and Circuit Switched WAN protocols/circuits/types. Define each protocol and describe at least two data transmission technologies a ...

Topic ethernet technologiescreate a short essay 1 to 3

Topic: Ethernet Technologies Create a short essay (1 to 3 pages) that describes an Ethernet frame. You will need to do some research to understand the construction of an Ethernet frame. As you describe an Ethernet frame, ...

Assignmentplanning is an important aspect with any

Assignment Planning is an important aspect with any enterprise network structure. However, planning must encompass several aspects including not only the assessment of the technology required, but also keeping the stakeh ...

Assignment give an answer to the following topicswhat are

Assignment: Give an answer to the following topics: What are the security issues with wireless LANs and WANs in a data processing environment? What are the recommended solutions to the issues identified? What are the sec ...

Q1 the rijndael algorithm was chosen for the advanced

Q1: The Rijndael algorithm was chosen for the Advanced Encryption Standard (AES). Using either the attached tutorial, or your own sources of information, pick one (or more) steps of the algorithm and explain it in some d ...

Computer sciencenetworks are not perfect and errors will

Computer Science Networks are not perfect, and errors will occur because of software and hardware problems. Network downtime is costly to business operations and should be minimized where economically possible. Part of t ...

Assignment network consultation for designitthis assignment

Assignment: Network Consultation for DesignIT This assignment contains two Sections: Network Consultation Proposal and Network Consultation Presentation. You must submit both sections as separate files in order to comple ...

Securritypost for elprofessoripart 1based on your teams

Securrity Post for elprofessori Part 1 Based on your team's Week Five Learning Team Collaborative discussion, write the Network Security Policy section of the Information Security Policy. Include the following: • Network ...

Ppp data path completion using dummy network interface term

PPP Data Path Completion using Dummy Network Interface Term Project Goal of Term project 3 1. Completes the user level PPP program - Making a connection on both sides of the program YOU made 2. Try to make the full data ...

Assignment1 give a generic definition of what a

Assignment 1. Give a generic definition of what a protocol is (not related to the internet). (Knowledge) 2. Using the definition you just found explain how TCP and IP fit that definition. (Evaluation) 3. What is the resp ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen