ADAPTIVE BEAM TRACKING METHOD AND PILOT DURATION OR CHANNEL FEEDBACK DURATION ADAPTATION FOR COORDINATED BEAMFORMING SYSTEM

摘要

PURPOSE: An adaptive beam forming method for cooperative beam forming system and a pilot duration/channel feedback duration selecting method are provided to minimize complexity of a cooperative beam forming system in a time variable channel environment. CONSTITUTION: A beam forming condition is obtained through an SVD(Singular Value Decomposition). A channel is obtained by using a beam forming matrix. The variation of the beam forming matrix is calculated through the variation of a channel. If the variation of the channel is delta HK(n), the channel is calculated when time is n.