The present specification proposes a method for allowing a station operating in an orthogonal frequency division multiplexing (OFDM) mode to transmit and receive a signal on two combined channels, andan apparatus therefor. A method for transmitting a signal according to the present invention comprises the steps of: mapping a modulation symbol value for each bit pair included in an input encodingbit and a conjugate value for the modulation symbol value to each of a first combined channel and a second combined channel that are included in the combined channels; and transmitting signals mappedto the first combined channel and the second combined channel to another station on the combined channels including the first combined channel and the second combined channel.
본 명세서는 무선랜(WLAN) 시스템에서 신호의 송수신 방법 및 이를 위한 장치에 대하여 제시한다. 구체적으로, 본 명세서는 OFDM (Orthogonal Frequency Division Multiplexing) 모드로 동작하는 스테이션이 2개의 결합된 채널을 통해 신호를 송수신하는 방법 및 이를 위한 장치에 대하여 제시한다.