Communication Engineering

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http://etd.aau.edu.et/handle/12345678/191

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Browsing Communication Engineering by Subject "5G New Radio"

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    Quality Assessment for 5G Enhanced Mobile Broadband Service in Addis Ababa
    (Addis Ababa university, 2024-10) Mubarik Ahmed; Beneyam Berehanu (PhD)
    The worldwide telecom industry is moving toward 5G network to address high bandwidth, low latency, and massive connectivity requirements. The recent deployment of 5G NR technology in Ethiopia promised to transform the speed and quality of MBB services in majority of the business districts and selected residential areas of Addis Ababa. To achieve expected outcomes from this new 5G network, its quality and perception of customers should be evaluated in its early stage. This will enable timely and informed measures by subscribers, mobile network operators, mobile device manufacturers, the regulatory authority, ECA, and other stakeholders. In this thesis, spatiotemporal evaluation of QoS metrics-download throughput, upload throughput and latency-is conducted using crowdsourcing application, Ookla SpeedTest, Network performance reporting system, PRS and drive test tool, PHU. A subjective survey is used to assess user experience. Despite the significant disparity in 5G coverage, result from all four sources indicate that 5G eMBB service performance in AA is very good as compared to average global 5G performance and IMT-2020 minimum technical requirements. Overall average download throughput obtained is 364 Mbps from SpeedTest, 311 Mbps from PRS and 414 Mbps from PHU. And average upload throughput is 58 Mbps from SpeedTest, 20 Mbps from PRS and 89 Mbps from PHU. From subjective survey, MOS on the overall performance of 5G eMBB service in AA is 4.1. The results also show a consistent trend regarding the impact of spatiotemporal and device variations on the performance of 5G network.
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    Techno-Economic Analysis of 5G Hybrid Deployment of Sub 6GHz and mmWave Band: The Case of Bole area, Addis Ababa, Ethiopia
    (Addis Ababa University, 2025-05) Bezuayehu Getaneh; Yihenew Wondie (PhD)
    As wireless communication demand increases, fourth-generation (4G) networks are becoming insufficient. Fifth-generation (5G) networks address this challenge by offering higher data rates, lower latency, and improved Quality of Experience (QoE). Key enabling technologies include Massive Multiple-Input Multiple-Output (Massive MIMO), millimeterwave (mmWave) communication, and device-to-device communication. In Ethiopia, Ethio Telecom has launched the deployment of 5G services using the sub-6 GHz (3.5 GHz) band, It will eventually be expanded to mmWave (28 GHz). The aims of this thesis is to analyze the techno-economic feasibility of a hybrid 5G deployment in the Bole area of Addis Ababa, combining sub-6 GHz (3.5 GHz) macro cells with mmWave (28 GHz) micro cells through carrier aggregation. This analysis uses data from Ethio Telecom, literature, and (3rd Generation Partnership Project) 3GPP specifications. Execute network dimensioning and apply a modified version of the Techno Economic Results from the Advanced Communications Technology and Services (TERA) tool for cost and revenue modeling, and a five-year financial analysis using a 10% discount rate. The analysis shows that the hybrid 5G deployment model is both technically feasible and economically viable. Key financial indicators include a payback period of 4.48 years, a positive Net Present Value (NPV) of ETB 193.98 million, and an Internal Rate of Return (IRR) of 30%, which exceeds the assumed discount rate. These findings support the strategic adoption of hybrid 5G networks to meet Ethiopia’s growing connectivity needs.