Need Homework Help-Assignment 2 Report


Need Homework Help-Assignment 2 Report

Assignment 2 Report
Name 1, Student number 1, Name 2, Student number 2, and Name 3, student number 3.  Email addresses

 

Abstract.

This document gives instructions for preparing your assignment 2 report.  You can use this document as both an instruction and a template into which you can type your own text. The main sections in a report include: introduction, main content and conclusion. Tables and figures are helpful in demonstrating your contents.

Introductions

This template is tailored for assignment 2 of COSC1111/2061, Data Communications and Network- Centric Computing (DCNC). This template is similar to the format of Lecture Notes on Computer Science (LNCS).

 This assignment contributes 25% towards your overall result of DCNC with a bonus of up to 5 additional marks.

 You are expected to work in a group (recommend 3 members) of your choice: o Individual submission would be acceptable; o High standard will be expected to groups have more than 3 members.

 Failure to comply with the instructions may lead to mark deduction.
2 Submission

 Date of submission: 11:59PM, 20th May 2016.  The assignment is to be submitted via Weblearn. Each group only needs to submit once (only one student from your group should submit).

 Please compress your assignment into a single file for submission.

 Remember to include in your submissions the names, student IDs and contribution percentages of every group member, so we can allocate marks appropriately.
Each group chooses one of the following tasks (either Task 1 or Task 2):
3  Tasks
Task 1 Investigation of Time Division Multiplexing (TDM). 

Assume a Time Division Multiplexing (TDM) multiplexer combines four sources, A, B, C and D, using a synchronization time slot of 2 bytes with one extra framing bit for synchronization;

1) Draw a picture to describe the synchronized TDM.

2) Explain how time is shared and how the synchronized transmission is implemented 3) Each analog signal is digitized using 8-bit Pulse Code Modulation (PCM). The PAM is shown in Figure 1 below. Give the PCM output of Frame 2, Frame 3 and Frame 4.

4) As shown in Figure 1 below, source C stops transmitting at the third frame, and source D stops transmitting at the fourth frame. Discuss the resource utilization of the multiplexed channels in these cases.

5) Discuss the advantages and the disadvantages of synchronized transmission.

6) Suppose that 10,000 people are talking one-to-one (i.e., 5,000 calls) on the phone at a specific time. What is the total bit rate generated by all these people if each voice call is encoded using PCM, which requires 64kbps for each voice channel?

7) A digital transmission system has a bit rate of 50 Mbps. How many PCM voice calls can be carried by the system?

8) Bonus 5 marks: Investigate how to transmit the student numbers of your team members  more efficient than the synchronized TDM transmission.
Figure 1. Pulse Amplitude Modulation (PAM) of channels A, B, C and D.

Task 2 2 Investigation of Code Division Multiplexing Access (CDMA) and wireless communications.

The following table shows the development of mobile communications:

Table 1

Brief summary of 4 generations wireless communications. Generation Functions Principles 1G  voice-oriented analog technology Frequency Division Multiple Access (FDMA) 2G  voice-oriented digital technology Time  Division Multiple Access (TDMA) 3G  high-speed voice-oriented integrated with data services Code Division Multiple Access (CDMA) 4G  IP-based: voice, data, multimedia service Code Division Multiple Access (CDMA)
You are required to write a technical report using the given template, which must discuss…

1) …how wireless communication is implemented.

2) …explain the technical details of FDMA and TDMA.

3) …how CDMA, also termed “cellular technology”, works.

4) …how communication is seamlessly maintained while users are moving (not stationary)

5) …how “roaming” service is implemented (understand the cost of roaming).

6) Investigate the capacity of image/video transmission over a wireless link with generations 1G, 2G, 3G and 4G. You may discuss how much bandwidth is available in each generation and whether it is enough to carry images or even videos.

7) Bonus 5 marks: Investigate the issues and risks present in wireless communicaiton.

8) There is no requirement for the length of your report, so long as you adequately answer all points (4 pages is a rough estimate for the LNCS template).

4    Conclusion

You are suggested to start from google search, and read from Wikipedia. You can also search key words to find research publications from Lecture Notes in Computer Science (LNCS) and IEEE International Conference.

 

References
1. William Stallings, edition 9th Data and Computer Communications, Pearson. 2011 2. William Stallings, edition 10th Data and Computer Communications, Pearson. 2014 3. DCNC Lecture Notes Chapter 3, Chapter 5. 4. DCNC Workshop 1-3.

 

Data Communication and Net-Centric Computing (COSC1111/2061)
Assignment 2 (S2 2016)

Aims

 To investigate the multiplexing mechanism and the Internet communication.  To explore the modern communication technology.
Instruction

 This assignment is group-based, prefer 3 members in one group (prefer not solo).   It contributes 30% towards your overall result.
Submission requirements

 Date of submission: 11:59PM, 9th Oct 2016.

 The assignment is to be submitted via Weblearn. Only one submission for each group.

 Please compress your files into a single document for submission. Remember to include all team members’ names, student IDs and contribution % of each person in you submission.

 One group one submission by the group leader.  One student should only choose to be in one group. Multiple submissions will cause error in the final mark consolidation and it will be your responsibility to ensure no multiple submissions and not in multiple groups.
Late submission policy

 There will be a late submission period of 5 working days for this assignment.

 Late submissions will incur a penalty of 10% per day, unless prior arrangement has been made regarding an extension.

 Submissions received after the late submission period expires will not be assessed.
Task 1 Investigation on Time Division Multiplexing (TDM) (10 marks).    Assume a Time Division Multiplexing (TDM) multiplexer combines four source, A, B, C and D, using a synchronization time slot of 2 byte with one extra framing bit for synchronization;  1) Draw a picture to describe the synchronized TDM.

2) How the time is shared and how the synchronized transmission is implemented?
Task 2 Investigation on the Code Division Multiplexing Access (CDMA) and wireless communications. (20 marks) The following table shows the development of mobile communications: Generation Functions Principles 1G  voice-oriented analog technology Frequency Division Multiple Access (FDMA) 2G  voice-oriented digital technology Time  Division Multiple Access (TDMA) 3G  high-speed voice-oriented integrated with data services Code Division Multiple Access (CDMA)
4G  IP-based: voice, data, multimedia service Code Division Multiple Access (CDMA) You are required to write a technical report using the given template, discussing the following points: 1) How the wireless communication is implemented? 2) Discuss the technical details of FDMA.  3) Investigate how CDMA, also termed as “cellular technology”, works. 4) How the communication is seamlessly maintained while users are moving. 5) How “roaming” service is implemented (understand the cost of roaming).
There is no requirement on the length (4 pages is a reference with the LNCS template).

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: