A survey on 3GPP heterogeneous networks

@article{Damnjanovic2011ASO,
  title={A survey on 3GPP heterogeneous networks},
  author={Aleksandar Damnjanovic and Juan Montojo and Yongbin Wei and Tingfang Ji and Tao Luo and Madhavan Vajapeyam and Taesang Yoo and Osok Song and Durga Malladi},
  journal={IEEE Wireless Communications},
  year={2011},
  volume={18}
}
As the spectral efficiency of a point-to-point link in cellular networks approaches its theoretical limits, with the forecasted explosion of data traffic, there is a need for an increase in the node density to further improve network capacity. However, in already dense deployments in today's networks, cell splitting gains can be severely limited by high inter-cell interference. Moreover, high capital expenditure cost associated with high power macro nodes further limits viability of such an… CONTINUE READING
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