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Ece 322: Introduction To Telecommunication Engineering Question Paper

Ece 322: Introduction To Telecommunication Engineering

Course:Bachelor Of Electrical And Telecommunications Engineering

Institution: Moi University question papers

Exam Year:2012

MOI UNIVERSITY
BACHELOR OF ENGINEERING IN ELECTRICAL AND COMMUNICATION ENGINEERING

ECE 322: INTRODUCTION TO TELECOMMUNICATION ENGINEERING

CAT I
Instruction: Answer all questions.

1.
a. Define the term "telecommunication" and give examples of telecommunication systems. (4mks)

b. Explain the significances of Telecommunication Systems. (4mks)

c. Outline the transmission impairents in Telecommunication systems. (4mks)

d. Define the term 'signal' and differentiate between the following signals
i. Discrete and digital signals
ii. Periodic and aperiodic signals
iii. Stationary and wide sense stationary signals. (7mks)

2.
a. What is modulation? Explain briefly three elements of a sine wave that makes it suitable as a carrier wave. (4mks)

b. Differentiate between:
i. Suppressed and reduced sideband AM (4mks)
ii. Modulation index for AM and FM (2mks)
iii. Audio and Minimum FSK (4mks)
iv. Symbol error rate for BPSK and QPSK (4mks)

c. Compare FSK and ASK in terms of noise susceptibility and bandwidth requirements. (4mks)

d. A telecommunication channel requires a bandwidth of 1 MHz. The SNR for the channel is 63. What are the approximate bit rate and signal levels? (6mks)

3.
a. What is Multiplexing and how is it important in telecommunication systems? Which layer of the OSI model provides the multiplexing process? (3mks)

b. The key principle of CDM is spread spectrum. Outline the spread spectrum features. (3mks)

Ece 322: Introduction To Telecommunication Engineering Question Paper

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