Uplink sum rate analysis with flexible pilot reuse

  title={Uplink sum rate analysis with flexible pilot reuse},
  author={Dechuang Zhang and Hairong Wang and Youhua Fu},
  journal={2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)},
Pilot contamination caused by non-orthogonal pilot sequences reuse in adjacent cells has become one of the main impairments for massive multiple-input multiple-output (MIMO) systems. A scheme named flexible pilot reuse is proposed in this paper to reduce the effect. The main idea is that users suffered from mild pilot contamination (PC) are allocated the same set of orthogonal pilots, while the users suffered from severe PC in adjacent cells all use orthogonal pilots. That is users in a cell… CONTINUE READING