Method for transmitting downlink signal signal in MIMO wireless communication system and apparatus therefor

摘要

A method for transmitting a downlink signal in a multi-antenna wireless communication system is disclosed. Specifically, mapping a signal in a codeword domain to a signal in a layer domain, mapping signals in the layer domain to a signal in a virtual antenna port domain using a precoding matrix, Wherein the precoding matrix is changed to a channel measurement unit and the signal of the layer domain is layer permutation within a channel measurement unit. Preferably, the channel measurement unit comprises at least one resource block (RB).