Method and apparatus for receiving PPDU in which data is replicated and phase rotation is applied in wireless local area network system

A method and an apparatus for receiving a PPDU in a wireless LAN system are presented. Specifically, a receiving STA receives a PPDU from a transmitting STA through a first frequency band, and decodes the PPDU. The PPDU includes a preamble and a data field. The first frequency band includes first to fourth sub-blocks. The data field includes first data for the first sub-block and the second sub-block and second data for the third sub-block and the fourth sub-block. Second data is generated based on data obtained by copying the first data and applying a phase rotation to the third sub-block. 提出一种用于在无线LAN系统中接收PPDU的方法和装置。具体而言，接收STA通过第一频带从发送STA接收PPDU，并解码PPDU。PPDU包括前导和数据字段。第一频带包括第一子块至第四子块。数据字段包括用于第一子块和第二子块的第一数据以及用于第三子块和第四子块的第二数据。基于通过复制第一数据并将相位旋转应用于第三子块所获得的数据来生成第二数据。