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A downlink power control scheme for interference avoidance in femtocells
Zahir Talha, , Ko Youngwook, Moessner Klaus
Published in IEEE
Pages: 1222 - 1226
Femtocells being small low powered base stations provide sufficient increase in system capacity along with better indoor coverage. However, the dense deployment of femtocells face the main challenge of co channel interference with macrocell users. In this paper, this interference problem is addressed by proposing a novel downlink power control algorithm for femtocells. The proposed algorithm gradually reduces the downlink transmit power of femtocells when they are informed about a nearby macrocell user under interference. This information is given to the femtocells by the macrocell base station through a unidirectional downlink broadcast channel. Simulation results show that the algorithm causes the macrocell to accommodate large number of femtocells within its area, whereas at the same time protecting the macrocell users from any harmful interference. \textcopyright 2011 IEEE.
About the journal
JournalData powered by TypesetIWCMC 2011 - 7th International Wireless Communications and Mobile Computing Conference
PublisherData powered by TypesetIEEE
Open AccessNo