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Communication Systems > Introduction > Flashcards

Introduction Flashcards

1
Q

What are the components of any communication system?

A

Source, Transmitter, Channel, Receiver, End User

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2
Q

What is the purpose of a transmitter?

A

couple the message to the channel

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3
Q

Functions of the transmitter

A

amplification, modulation, and filtering

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4
Q

Channel mediums

A

free space, fibre, copper, or water

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5
Q

What is the purpose of the receiver?

A

To reverse the process of transmission

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6
Q

Functions of the receiver

A

demodulation, filtering

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7
Q

Reasons for modulation

A

easy radiation, reduce noise and interference, channel allocation, multiplexing

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8
Q

Which is better FM or AM radio?

A

FM, this is because frequency modulation is more robust for noise

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9
Q

Analog modulation technique categories

A

Amplitude modulation and angle modulation

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10
Q

Analog Amplitude Modulation Techniques

A

AM, DSB, SSB, VSB

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11
Q

Analog Angle Modulation Techniques

A

FM, PM

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12
Q

Digital Modulation Techniques

A

ASK, PSK, FSK, QAM, QPSK

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13
Q

AM

A

Amplitude Modulation

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14
Q

DSB

A

Double Side Band

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15
Q

SSB

A

Single Side Band

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16
Q

VSB

A

Vestigial Side Band

17
Q

FM

A

Frequency Modulation

18
Q

PM

A

Phase Modulation

19
Q

ASK

A

Amplitude Shift Keying

20
Q

PSK

A

Phase Shift Keying

21
Q

FSK

A

Frequency Shift Keying

22
Q

QAM

A

Quadrature Amplitude Modulation

23
Q

QPSK

A

Quadrature Phase Shift Keying

24
Q

QPSK is a combination of which two modulation techniques

A

PSK and QAM

25
Q

Multiplexing Techniques

A

FDMA, TDMA, CDMA, WDMA

26
Q

FDMA

A

Frequency Division Multiple Access

27
Q

TDMA

A

Time Division Multiple Access

28
Q

CDMA

A

Code Division Multiple Access

29
Q

WDMA

A

Wave Division Multiple Access

30
Q

Multiplexing

A

a way of sending multiple signals or streams of information over a communications link at the same time in the form of a single, complex signal.

Communication Systems (2 decks)

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