Users Throughput Enhancement of LTE Network using Carrier Aggregation for Addis Ababa
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Date
2019-12-10
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Abstract
Mobile broadband services are undergoing a period of dramatic growth causing a tremendous
increase in data tra c. One main reason for this rise of tra c is being driven by
the growing number of mobile subscribers. This increment in data tra c is handled by
new technologies. LTE-Advanced extends the capabilities originally de ned in LTE to
increase data throughput by using a combination of new technologies, like Orthogonal
Frequency Division Multiple Access (OFDMA), Carrier Aggregation (CA) and Multi Input
Multi Output (MIMO) techniques. CA is one of the most signi cant LTE-Advanced
features that combine multiple Component Carriers (CCs) across an available spectrum
to create a wider bandwidth channel for increasing the network data throughput and
overall capacity.
This thesis analyzes throughput enhancement using CA technique, by conducting radio
propagation using WinProp and system level simulation using Matlab, for di erent CA
scenarios of a selected high tra c area in Addis Ababa city, Ethiopia. The addition of
10 MHz CC over 20 CC provides 49%, and 20 MHz provides 105% throughput gains at
cell center for case of 1800 MHz (band 3). All the three frequency bands (1800 MHz,
2600 MHz (band 7) and 3700 MHz (band 43)) with two 20 MHz CC provide over 100%
throughput gain at the cell center, compare to 1 CC at 1800 MHz. When using low
frequency bands, such as the 1800 MHz band, the Signal to Interference and Noise Ratio
(SINR) value is low thus providing a better throughput from the cell center to edge.
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Keywords
LTE, LTE-Advanced, SINR, Throughput, Frequency band, Carrier aggregation, Component carrier