Soumaya Hamouda

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In this paper, we investigate resource management in downlink multi-cell Orthogonal Frequency Division Multiple Access (OFDMA) systems. An efficient and low-complexity subcarrier assignment algorithm as well as power control scheme are proposed to mitigate the co-channel interference (CCI) impact. Based on a new centralized reuse partitioning strategy, our(More)
FemtoCells' deployment presents a major challenge. In fact, these femto-base stations are often seen as hostile interferers by macroCells. Therefore, the optimization of the radio resource allocation to femtoCells is essential to decrease the interference in the network and provide a better QoS for both femtoCell and macroCell users. In this paper, we(More)
The next generation of radio wireless networks is expected to support spectrum decision operations that will allow a cognitive radio terminal to share the frequency bandwidth with primary users without impairing their QoS requirements. This can indeed enhance the utilization of the limited spectrum resources, and help meet the growing bandwidth demand. In(More)
In this paper, we investigate downlink power allocation and capacity for UMTS network. It is a well-known fact that in UMTS network, downlink capacity is mainly limited by the total transmitted power at the base station (BS). Our work emphasizes the impact of the users' repartition in the cell (or their distances from serving BS), the service bit rate and(More)