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Browsing Research Publications/Outputs by Impact Area "Spectrum Access Management Innovation"

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5G network slice resource overbooking: An opportunity for telcos to boost their revenue

Author: Mamushiane, Lusani ; Mwangama, J ; Lysko, Albert A ; Kobo, Hlabishi I Date: Aug 2022 The global impact of COVID-19 has been unprecedented, with over-the-top (OTT) services consumption growing at a staggering rate. While OTT does consume revenue-generating data, OTT services are gradually substituting the traditional primary ... Read more
Analysis of uniformity in steering capability of an ESPAR antenna

Author: Ebrahim, Rozeena ; Mthethwa, Nosipho B ; Lysko, Albert A Date: Nov 2022 This paper looks at design considerations for an Electronically Steerable Parasitic Array Radiator (ESPAR) antenna suitable for inexpensive large-scale wireless network technologies. This can help address the demand for a cheaper, simpler, ... Read more
Capacity, coverage and power profile performance evaluation of a novel rural broadband services exploiting TVWS from high altitude platform

Author: Hussien, HM ; Katzis, K ; Mfupe, Luzango P ; Bekele, ET Date: Jun 2022 The coverage and capacity of exploiting TV White Spaces (TVWS) from High Altitude Platforms (HAPs) with multiple antenna payloads using uniform rectangular phased array (URA) antennas are explored in this article. A scenario is suggested in ... Read more
Considering the connectivity options for a smart water management system deployment

Author: Lysko, Albert A ; Ngcama, Lwando ; Shingwenyana, Rhulani K ; Ramotsoela, D Date: Dec 2022 Smart water utility management is gaining strong momentum as it can help to identify leaks and control the water flow, level and pressure. The latter can be used to reduce leaks, reduce bursts and prolong the life of pipes. All these factors ... Read more
Deploying a stable 5G SA testbed using srsRAN and Open5GS: UE integration and troubleshooting towards network slicing

Author: Mamushiane, Lusani ; Lysko, Albert A ; Kobo, Hlabishi I ; Mwangama, J Date: Aug 2023 Field trials and experimentation are crucial for accelerating the adoption of standalone (SA) 5G in Africa. Traditionally, only network operators and vendors had the opportunity for practical experimentation due to proprietary systems and ... Read more
Dynamic spectrum allocation for TVWS wireless access from high altitude platform

Author: Hussien, HM ; Katzis, K ; Mfupe, Luzango P Date: Dec 2021 The issue of spectrum allocation in cognitive high altitude platform wireless networks using TV White Space (TVWS) spectrum is presented in this paper. The mathematical model of spectrum allocation is given, and this model is converted into ... Read more
Estimating the number of people affected by switching off analogue TV

Author: Lysko, Albert A ; Mfupe, Luzango P Date: Dec 2022 The radio frequency spectrum is a very valuable resource. Analogue television broadcasting uses the spectrum inefficiently and television (TV) broadcasting brings less income than mobile services. With these, the world is moving to digital ... Read more
Experience in profiling and optimizing a 5G standAlone Radio Access Network (RAN) based on an open source testbed

Author: Mamushiane, Lusani ; Lysko, Albert A ; Mwangama, J ; Kobo, Hlabishi I ; Otieno, HO Date: Aug 2023 The adoption of 5G technology in Africa has been increasing steadily, with initial emphasis on non-standalone (NSA) architecture to leverage existing 4G investments and accelerate return on investment. The uptake of standalone (SA) 5G has ... Read more
Innovating for Broadband: The Case of Television White Space Networks in Sub-Saharan Africa

Author: Mzyece, M ; Mfupe, Luzango P ; Mekuria, Fisseha Date: Nov 2018 Television white space (TVWS) networks based on geo-location spectrum databases (GLSDs) present an excellent opportunity to provide affordable broadband to underserved rural communities in Sub-Saharan Africa. In this paper, we explore potential ... Read more
Integration of massive MIMO and machine learning in the present and future of power consumption in wireless networks: A review

Author: Nwachukwu, SE ; Chepkoech, M ; Lysko, Albert A ; Awodele, K ; Mwangama, J ; Burger, Chris R Date: Aug 2022 The steady increase in data traffic rates and systems’ complexity have contributed to the information and communication technologies (ICT) sector’s increased energy consumption and CO 2 emissions. These pose a significant challenge to the ... Read more
Integration of massive MIMO and machine learning in the present and future of power consumption in wireless networks: A review

Author: Nwachukwu, SE ; Chepkoech, M ; Lysko, Albert A ; Awodele, K ; Mwangama, J ; Burger, Chris R Date: Aug 2022 The steady increase in data traffic rates and systems’ complexity have contributed to the information and communication technologies (ICT) sector’s increased energy consumption and CO 2 emissions. These pose a significant challenge to the ... Read more
Metaheuristic optimisation for radio interface-constrained channel assignment in a hybrid Wi-Fi–Dynamic Spectrum Access wireless mesh network

Author: Zlobinsky, N ; Johnson, D ; Mishra, AK ; Lysko, Albert A Date: Dec 2021 Channel Assignment (CA) in wireless mesh networks (WMNs) has not been well studied in scenarios where the network uses Dynamic Spectrum Access (DSA). This work aims to fill some of this gap. We compare metaheuristic algorithms for optimising ... Read more
Performance optimization of high-altitude platform wireless communication network exploiting TVWS spectrums based on modified PSO

Author: Habib, MH ; Katzis, K ; Mfupe, Luzango P ; Ephrem, TB Date: Jul 2022 The Uniform hexagonal array (UHA) sidelobe level (SLL) reduction is a crucial consideration for avoiding co-channel interference and improving Carrier-to-interference Ratio (CIR) performance in HAP wireless networks using the TVWS spectrum. ... Read more
Power consumption measurement tool for research on open 5G and beyond

Author: Burger, Chris R ; Lysko, Albert A Date: Sep 2023 This paper proposes a simple and inexpensive test setup that can be used to evaluate, compare and study the power consumption of different testbed configurations. The paper offers a description of the design, including safety considerations ... Read more
Proceedings of IEEE AFRICON 2021, Arusha, Tanzania, Virtual Conference, 13-15 September 2021

Author: Mfupe, Luzango P ; Kaijage, S ; Mwangama, J ; Oyerinde, O ; Katzis, K Date: Sep 2021 AFRICON is the Institute of Electronics and Electrical Engineers (IEEE) Region 8 flagship conference on the African continent. IEEE AFRICON 2021 was virtually held in Arusha, Tanzania from Monday the 13th to Wednesday the 15th of September ... Read more
Real-time spectrum occupancy measurements based on the energy detection method in cognitive radios

Author: Lebese, J ; Olwal, T ; Mfupe, Luzango P Date: Sep 2021 Spectrum occupancy measurements have become vital due to the proliferation of radio users. Literature shows that most of the allocated spectrum is used sporadically. This brings in the idea of dynamic spectrum access techniques using Cognitive ... Read more
Smart township digital framework: Growing the township economy post-COVID-19 pandemic

Author: Mathibe, MJ ; Muchenje, T ; Masonta, Moshe T Date: Dec 2022 The Coronavirus (COVID-19) pandemic changed how people and businesses interact. Its impact severely impacted the global economy. As the governments of different countries imposed heavy lockdown regulations to curb the spread of the virus, an ... Read more
Software tools for power consumption monitoring of open 5G and beyond research: A review

Author: Ebrahim, Rozeena ; Luvhengo, Fhatuwani ; Vilakazi, Mlamuli ; Mamushiane, Lusani ; Lysko, Albert A Date: Sep 2023 This paper investigates four software tools with CPU power consumption estimation capabilities and identifies the most suitable tool for open fifth-generation (5G) and beyond research. The tools considered are Open Hardware Monitor (OHM), ... Read more
Sustainable Internet4All in South African rural and township communities

Author: Mthethwa, Nosipho B ; Sebopetse, Nakampe ; Vilakazi, Mlamuli C ; Mfupe, Luzango P ; Mofolo, Raarone OM ; Mekuria, F Date: Sep 2023 International Telecommunications Unions (ITU) and Global System for Mobile Communications (GSMA) statistics show that over half of the world’s population is still not connected to broadband Internet, let alone to get services based on emerging ... Read more
Testing performance for several use cases with an indoor OpenAirInterface USRP-Based base station

Author: Dludla, Angeline G ; Vilakazi, Mlamuli C ; Burger, Chris R ; Lysko, Albert A ; Ngcama, Lwando ; Mboweni, Lawrence ; Masonta, Moshe ; Kobo, Hlabishi I ; Mamushiane, Lusani Date: Nov 2022 This paper presents the early phases of the implementation of a Radio Access Network (RAN) based on OpenAirInterface (OAI) for a fifth-generation (5G) mobile network. Because the availability of full OAI 5G support was delayed, we initially ... Read more

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