wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

UTS Komunikasi Akses Nirkabel

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.
OFDMA stands for ________
a)
omnidirectional frequency division multiple access
b)
orthogonal frequency duplex multiple access
c)
orthogonal frequency divider multiple access
d)
 orthogonal frequency division multiple access
2.
Which property of OFDMA system allows adjacent subcarriers to be used without interference?
a)
Orthogonality
b)
Orthodoxy
c)
Octagonality
d)
Originality
3.
When we divide band of Orthogonal Frequency Division Multiplexing (OFDM) into sub bands, it diminishes effects of ____
a)
noise
b)
collision
c)
interference
d)
signals absence
4.
MIMO technology makes advantage of a natural radio wave phenomenon called
a)
Reflection
b)
Multipath
c)
Refraction
d)
Diffraction
5.
Which of the following technology does not use MIMO?
a)
4G
b)
Wifi
c)
WiMax
d)
AMPS
6.
A multicarrier modulation format in which there has been growing interest to compensate for impairments in optical fiber transmission systems is _______________
a)
OFDM
b)
EDM
c)
WDM
d)
ADM
7.
What are the differences between FDM and OFDM?
a)
FDM uses Guard bands. OFDM does not need Guard bands.
b)
FDM transmits data in a big channel. OFDM transmits chunks of data through a group of small channels.
c)
FDM is sensitive to Multipath effects and Noise. In OFDM, only very few Sub-channels are affected by Noise and Multipath diversity.
d)
All the above
8.
What does SGSN stands for?
a)
Serial Gateway Supporting Node
b)
Supporting GGSN Support Node
c)
Supporting GPRS Support Node
d)
Supporting Gateway Support Node
9.
In MIMO, which factor has the greatest influence on data rates?
a)
The size of antenna
b)
The height of the antenna
c)
 The number of transmit antennas
d)
The area of receive antennas
10.

Which organization is responsible for developing LTE standards?

a)

UMTS

b)

3GPP

c)

3GPP2

d)

ISO

11.

MIMO is a smart antenna technology.

a)

True

b)

False

12.

MIMO stands for

a)

Many input many output

b)

Multiple input multiple output

c)

Major input minor output

d)

Minor input minor output

13.

Dalam satu frame terdiri dari … slot

a)

10

b)

15

c)

20

d)

25

14.

Cyclic Prefix digunakan untuk memberikan solusi pada?

a)

ISI

b)

OSI

c)

ISO

d)

ISU

15.

Semakin tinggi CP, semakin 'berguna' untuk menghilangkan ISI

a)

True

b)

False

16.
11.Why is a cyclic prefix required in an OFDMA?(CO3)(B4)
a)
To ensure symbol time is an integer number
b)
To help overcome multipath and ISI
c)
To maintain good BER
d)
To make OFDMA scalable
17.

What is the largest channel bandwidth a UE is required to support in LTE?

a)

10 MHz

b)

20 MHz

c)

1.4 MHz

d)

5 MHz

18.

In LTE, what is the benefit of PAPR reduction in the uplink?

a)

Improved uplink coverage

b)

Lower UE power consumption

c)

Reduced equalizer complexity

d)

Improved uplink coverage, lower UE power consumption and reduced equalizer

19.

The shape of the cellular region for maximum radio coverage is

a)

Circular

b)

Square

c)

Oval

d)

Hexagon

20.

Each cellular base station is allocated a group of radio channels to be used within a small geographic area called as __________________

a)

Tell

b)

Cell

c)

Bell

d)

Null

Similar Resources on Wayground

mental ability test

25 questions

mental ability test

quiz

Worksheet

•

University

Quiz 2: Wireless Networking

20 questions

Quiz 2: Wireless Networking

quiz

Worksheet

•

University