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All Journal International Journal of Informatics and Communication Technology (IJ-ICT)
Amevi Acakpovi
Accra Polytechnic
Computer Science & IT

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Technical Challenges of Tower Sharing in Multi-Operator Mobile Communication Environments Koudjo Mawuefam Koumadi; Raymond Folley; Kester Quist-Aphetsi; Amevi Acakpovi
International Journal of Informatics and Communication Technology (IJ-ICT) Vol 2, No 3: December 2013
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.629 KB)

Abstract

The traditional mobile communications business model was based on full ownership of network infrastructure. However, network infrastructure sharing has been a trend among mobile network operators. Sharing traditional mobile network infrastructure which were not designed originally for sharing has become prevalent in the face of stiff competition, regulatory requirement and declining revenues. This, despite the reduction in capital expenditure for operators, brings technical challenges with regards to network planning, optimization and expansion in multi-operator shared environments. This paper briefly introduces models of passive infrastructure sharing and their advantages, and investigates the technical challenges which are inherent to communications tower sharing. The effects of non-optimal antenna height on coverage and signal quality, as well as those of tower loading constraints on transmission link quality are investigated among others. Simulation results and on-site measurements confirm these challenges, which may increase the operation expenditure of mobile networks.Our findings challenge the current perception in both academia and industry that passive infrastructure sharing can only produce positive effects, and therefore call for further investigations on the financial benefits of infrastructure sharing.DOI: http://dx.doi.org/10.11591/ij-ict.v2i3.4553 
Inteference Mitigation in Femtocellular Networks Amevi Acakpovi; Dominique Kogue; Koudjo Mawuefam Koumadi; Ibrahim Tahirou
International Journal of Informatics and Communication Technology (IJ-ICT) Vol 3, No 2: August 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (754.328 KB) | DOI: 10.11591/ijict.v3i2.pp113-121

Abstract

Femtocells can significantly boost up wireless cellular network capacity by reducing communication distances to user equipment and also by reusing resources already utilized in the macrocell network on which they overlay. However, the deployment of femtocells within a macrocell coverage area, causes severe interference between the femtocell and the macrocell, which may have an impact on the overall performance of the femtocells. Avoiding such interference is very important for the effective co-existence of femtocells and macrocell. This paper proposes an algorithm to mitigate cross-tier interference between a femtocell and a macrocell using adaptive power control. The proposed approach is modeled and simulated using MATLAB. The impact on the performance of the femtocell using the proposed algorithm is analysed. Results show that the proposed adaptive power control algorithm has tremendously reduced the negative effects on the system throughput, delay and outage probability for voice and data traffics.
Co-Authors Dominique Kogue Ibrahim Tahirou Kester Quist-Aphetsi Koudjo Mawuefam Koumadi Koudjo Mawuefam Koumadi Raymond Folley