Pilot frequency pollution elimination method for multiple cells in large-scale MIMO system

The invention provides a pilot frequency pollution elimination method for multiple cells in a large-scale MIMO system. On a prior study basis, a new pilot frequency pollution alleviating method is proposed for reducing algorithm complexity and eliminating pilot frequency pollution in a compensation way. The pilot frequency eliminating scheme realizes pilot frequency pollution elimination through a method that corresponding cells keep silent in corresponding phases while sending pilot frequency signals repeatedly in other phases. The method can be applied to indoor environment and femto cell environments and is high in practicability. 本发明公开了种大规模MIMO系统下多小区导频污染消除方法。在现有的研究基础上，提出种新的导频污染减轻方法，旨在减小算法的复杂度，通过抵消的方式来消除导频污染。该导频消去方案通过相应小区在其各自的阶段保持静默，在其他阶段重复发射导频信号来实现导频污染消除。本方法可以应用在室内环境和毫微微蜂窝小区环境中，具有将强的实用性。