Mobile WiMAX and 3rd Generation Cellular Technology (3G)
Link Budget Calculation
By S. M. Yahea Mahbub, Manika Rani Dey & Subrata Kumar Aditya
Pabna University of Science and Technology, Bangladesh
In this paper cell range for different region and modulation schemes has been
calculated for WiMAX and 3G mobile technologies,
considering both
as a cellular mobile technology
While resolving the cell range using different propagation models, effect of various
parameters like frequency, base station antenna height, transmitting power, maximum allowable path loss and SNR over cell range have also been studied. Analysis has been done for both uplink and downlink.
From the study it reveals that for downlink, cell range increases with
increasing transmitting power and decreases with frequency and SNR. For uplink, cell range decreases with SNR.
When adaptive modulation advances, it affects cell range significantly for
parameters such as frequency, base antenna height and SNR.
Keywords: link budget, path loss models, WiMAX, 3G, modulation schemes, cell range.
This research work provides numerical facts
regarding the WiMAX and 3G cellular network
comparison issues, which are only theoretically
discussed in literature.
The figure-1, 2 shows that the cell range
increases with increasing base station transmitter power
for both WiMAX and 3G respectively. Figure-3, 4 shows
that cell range decreases with increasing carrier
frequency both for WiMAX and 3G respectively. Figure-5
and 6 are both for WiMAX, but for uplink and downlink
respectively, and those shows that the cell range
decreases with increasing SNR.
The data transfer rate of WiMAX is mostly
depends on the channel bandwidth used. The use of the
selectable channel bandwidth by WiMAX ranging from
1.25MHz to 20MHz makes the system very flexible. On
the other side 3G uses fixed channel bandwidth.
OFDM also makes it easier to exploit frequency
diversity and multiuser diversity to improve capacity.
Therefore, when compared to 3G, WiMAX offers higher
peak data rates, greater flexibility, and higher average
throughput and system capacity and number of user
served by WiMAX is four times greater than the 3G
cellular networks [1]. Another advantage of WiMAX is its
ability to efficiently support more symmetric links.
Typically, 3G systems have a fixed asymmetric data rate
ratio between downlink and uplink [9].
ช่วยแปลหน่อยน่ะค่ะ
Link Budget Calculation
By S. M. Yahea Mahbub, Manika Rani Dey & Subrata Kumar Aditya
Pabna University of Science and Technology, Bangladesh
In this paper cell range for different region and modulation schemes has been
calculated for WiMAX and 3G mobile technologies,
considering both
as a cellular mobile technology
While resolving the cell range using different propagation models, effect of various
parameters like frequency, base station antenna height, transmitting power, maximum allowable path loss and SNR over cell range have also been studied. Analysis has been done for both uplink and downlink.
From the study it reveals that for downlink, cell range increases with
increasing transmitting power and decreases with frequency and SNR. For uplink, cell range decreases with SNR.
When adaptive modulation advances, it affects cell range significantly for
parameters such as frequency, base antenna height and SNR.
Keywords: link budget, path loss models, WiMAX, 3G, modulation schemes, cell range.
This research work provides numerical facts
regarding the WiMAX and 3G cellular network
comparison issues, which are only theoretically
discussed in literature.
The figure-1, 2 shows that the cell range
increases with increasing base station transmitter power
for both WiMAX and 3G respectively. Figure-3, 4 shows
that cell range decreases with increasing carrier
frequency both for WiMAX and 3G respectively. Figure-5
and 6 are both for WiMAX, but for uplink and downlink
respectively, and those shows that the cell range
decreases with increasing SNR.
The data transfer rate of WiMAX is mostly
depends on the channel bandwidth used. The use of the
selectable channel bandwidth by WiMAX ranging from
1.25MHz to 20MHz makes the system very flexible. On
the other side 3G uses fixed channel bandwidth.
OFDM also makes it easier to exploit frequency
diversity and multiuser diversity to improve capacity.
Therefore, when compared to 3G, WiMAX offers higher
peak data rates, greater flexibility, and higher average
throughput and system capacity and number of user
served by WiMAX is four times greater than the 3G
cellular networks [1]. Another advantage of WiMAX is its
ability to efficiently support more symmetric links.
Typically, 3G systems have a fixed asymmetric data rate
ratio between downlink and uplink [9].