Name
Abstract | ||
|---|---|---|
Femtocell is envisioned as a highly promising solution to tackle the communications in the indoor environments, which has
been a very challenging problem for mobile network operators. Currently, the spectrum allocated to femtocells is from the
same licensed spectrum of macrocells, and the same mobile network operator. In this case, the capacity of femtocell networks
may be largely limited due to the finite number of licensed spectrum bands and also the interference with other femtocells
and macrocells. In this paper, we propose a radically new communications paradigm by incorporating cognitive radio in femtocell
networks (COGFEM). In COGFEM, the cognitive radio enabled femtocells are able to access licensed spectrum bands not only from
macrocells but also from other licensed systems (e.g. TV systems). Thus, the co-channel interference in femtocells can be
greatly reduced and the network capacity can be significantly improved. We formulate a joint channel allocation and power
control problem in COGFEM, and present two intelligent algorithms for efficient spectrum sharing in COGFEM. Results indicate
that COGFEM is able to achieve much higher capacity than the femtocell networks which does not employ agile spectrum access.
|
Year | DOI | Venue |
|---|---|---|
2009 | 10.1007/978-3-642-11664-3_13 | AccessNets |
Keywords | Field | DocType |
power control.,cognitive radio,femtocell,spectrum sharing,spectrum,channel allocation,co channel interference,power control | Radio resource management,Mobile network operator,Control channel,Femtocell,Computer science,Power control,Computer network,Cellular network,Channel allocation schemes,Cognitive radio | Conference |
Citations | PageRank | References |
7 | 0.75 | 10 |
Authors | ||
3 | ||