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MWC QUIZ 2

Authored by Ravikumar Polukonda

Other

University

Used 3+ times

MWC QUIZ 2
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is a cyclic prefix required in an OFDMA?

To ensure symbol time is an integer number

To help overcome multipath and ISI

To maintain orthogonality

To make OFDMA scalable

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What processing step combines multiple OFDM subcarriers into a single signal for transmission?

FFT

IFFT

c) RF combining

Channel mapping

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the DC subcarrier indicate?

Identity of the cell

Antenna configuration

Center of OFDM channel

Format of data channel

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a type of wireless communication?

LAN

WAN

PAN

All of the mentioned

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

MIMO is a smart antenna technology.
True/false

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

in MIMO which factor has the greatest influence on data rates

size of the antenna

height of the antenna

number of transmitting antennas

none

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

OFDM is a technique of
1.encoding digital data
2. multiple carrier frequencies
3. wide band digital communication
4. 4G mobile communication

1,2 and 3 are correct

2 and 3 are correct

1, 2 and 4 are correct

All the four correct

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