METHOD AND APPARATUS FOR KEEPING THE PRECODING CHANNEL COHERENCY IN A COMMUNICATION NETWORK

摘要

in prior art, the precoding size is two inter-limiting factors, such as example, influenced by the precoding accuracy and channel estimation in a mobile terminal. To address this problem, the present invention provides a method and associated apparatus for maintaining the coherency of the precoding channel of a communication network. During the pre-coding, the method considers a channel coherency and system capacity. The base station adjusts the phase and / or amplitude of the precoding matrix corresponding to each of the pre-coded unit in order to maintain the coherency of the information associated with the entire pre-coding channel. The associated information of the precoding channel include, for example, a unique value of the CSI or the precoding matrix channel. Then, the mobile station number of the pre-run the channel estimation based on the reference signal of the coding unit, the limitation of the prior art the mobile station to execute a channel estimate only limited by the pre-coding one or more resource block size Remove. ;