Interference mitigation in cognitive small cell networks (original) (raw)

The increasing demand for high-speed data service triggers researchers investigating and developing mobile wireless technology for indoor services. Some types of small cellular networks (small cells) are designed for indoor and random deployment with minimal operator involvement. The random deployment feature raises the probability of both co-tier and cross-tier interference. It enforces the small cells to have a feature of self-organisation. Hence, the research question going to be solved is "how to mitigate interference in small cells subject to the spectrum scarcity, random deployment, dynamic wireless channel, and complexity of the heterogeneous cellular networks (HetNet)?" Considering the complexity problem, researchers consider a concept with a comprehensive approach to addressing those problems, e.g. cognitive small cell or cognitive interference management. To simplify and speed up information exchange among base-stations (BSs) and to consider channel gain for reso...