Cellular Wireless Communication

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Cellular Wireless Communication
Name
Institution

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Cell Splitting
A cell is a geographical area bounded by one base station within a cellular network.
Cell splitting is a technological technique of subdividing larger cells into two or more tinier cells
with the aim of increasing the capacity in areas that are overpopulated.
Once the cells are splitted, each cell acquires its own base station with reduced transmitter power
in addition antenna whose height is reduced.

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Types of cell splitting
Beginning with Permanent splitting
Refers to a kind of cell splitting to which the new cells that are to be split are planned before
the time with much consideration of transmitted power, number of channels, traffic load,
assigned frequencies and cell site selection. The assignment of frequency follows the principles
based on frequency reuse distance ratio.
1. Dynamic splitting
This is a cell splitting technique based on allocated spectrum efficiency in real time
utilization and therefore cell splitting progresses gradually to prevent dropped calls
through the cellular operating system.
Factors that affect cell splitting
I. The radio aspect
Cell size is dependent on the structure of the coverage pattern and how well the
location of the user of the cell is to be known through the usage of the network.
II. The capacity of the switching processor
The smaller the size of the cell results into occurrence of more hand offs as
splitting process continues.
QUESTION 2
Part A: finding reuse distance
Reuse distance D is given by;

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D= R√ 3 N
Where R is the radius of each cell
N is the number of cells in a cluster.
∴ D= 2√ 3× 12
D = 12 km
Part B
One duplex channel= 2 × Bandwidth of each simplex channel
=2×50=50 KHz
Number of Channels = ( 30∗103
50 )−10 ×12
=600-120= 480 channels
Number of channels per cell = 480
12 = 40 channels per cell
Total number of calls per cell = 8 × 40
= 320 calls per cell.