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We consider resource allocation in femto-cell networks to maximize the throughput while minimizing interference to macro-users nearby. This can be achieved by allocating spectrum resource in a cognitive radio way. The proposed resource allocation is performed in two steps; spectrum sensing and resource scheduling. The femto base station detects idle frequency assignments (FAs) free from the occupation...
In this paper, we consider resource allocation in femtocell networks to maximize the throughput while minimizing interference to macro-cell users nearby. This can be achieved by dynamically allocating the spectrum resource in a cognitive radio way of avoiding the use of spectrum resources occupied by macro-users nearby. The proposed scheme comprises two steps; channel sensing and resource scheduling...
Orthogonal frequency division multiplexing (OFDM) is considered as one of the most promising techniques for next generation mobile systems. When the OFDM is applied to cellular environments, it may suffer from so-called other-cell interference (OCI). In this paper, we propose a novel resource allocation scheme in OFDM-based asynchronous cellular systems. It can reduce the OCI by exploiting the repetitive...
The worldwide interoperability for microwave access (WiMAX) can provide wireless services at high rates even in high mobility, but it can suffer from serious inter-cell interference (ICI) near the cell boundary. To mitigate the ICI problem in the downlink of mobile-WiMAX, we consider combined use of interference avoidance and cancellation techniques in addition to inter-sector coordination, maximizing...
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