WISE Design of Indoor Wireless Systems: Practical Computation and Optimization
IEEE Computational Science & Engineering
An overview of the femtocell concept
Bell Labs Technical Journal - Next-Generation Wireline Access Networks
OFDMA femtocells: a roadmap on interference avoidance
IEEE Communications Magazine
Access control mechanisms for femtocells
IEEE Communications Magazine
Handover in UMTS networks with hybrid access femtocells
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
EURASIP Journal on Wireless Communications and Networking - Special issue on femtocell networks
Femtocell coverage optimisation using statistical verification
NETWORKING'11 Proceedings of the 10th international IFIP TC 6 conference on Networking - Volume Part I
Measurement and ray-tracing of wideband indoor channel in UHF TV white space
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
Avoidance of co-channel interference using switched parasitic array antenna in femtocell networks
ICCSA'10 Proceedings of the 2010 international conference on Computational Science and Its Applications - Volume Part III
Review: A survey on interference management techniques in femtocell self-organizing networks
Journal of Network and Computer Applications
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Femtocells are low-cost, low-power cellular base stations that are deployed by the end user to supplement macrocellular coverage and provide high data rates in the customer's premises. In femtocell deployments, leakage of the pilot signal to the outside of a house can result in a highly increased signalling load to the core network as a result of the higher number of mobility events caused by passing users. In this paper, a low cost multi-element antenna solution is proposed to reduce the core network mobility signalling over previously published results using a single antenna only. Antenna gain pattern measurements of a prototype with two patches and two inverted F antennas are presented and a corresponding feeder network is discussed. Self-optimization methods are proposed that jointly select an appropriate antenna pattern and optimize the pilot power. This allows to better match the femtocell coverage to the shape of each individual house and results in an improvement of both indoor coverage and core network signalling resulting from mobility events.