Method for transmitting data unit in wireless LAN system and device for supporting same

摘要

Provided is a method for transmitting a data unit performed by a transmitter in a wireless LAN system. The method comprises: generating a data unit, wherein the data unit includes a data field which contains data to be transmitted by a transmitter; generating at least one data symbol for the data field; and transmitting the at least one data symbol, wherein two pilot tones are inserted into each data symbol, and pilot values and scrambling values are applied to the pilot tones.

主权项

1. A method for transmitting data in a wireless local area network, the method comprising:
generating, by a transmitter, a physical layer protocol data unit (PPDU) including a short training field, a long training field, a signal field and a data field carrying a physical layer service data unit (PSDU); and transmitting, by the transmitter, the PPDU over a 1 MHz bandwidth, wherein the data field is transmitted in a plurality of orthogonal frequency division multiplexing (OFDM) symbols, and wherein pilots for the data field are mapped in the plurality of OFDM symbols as follows:
Pnk={−7,7}={Ψ(n mod 2)+2, Ψ((n+1)mod 2)+2} and Pnk=0when k is neither 7 nor −7, where Pnk denotes a pilot value at subcarrier k for OFDM symbol n, n=0, . . . , N−1, N is the number of the plurality of OFDM symbols, ‘mod’ denotes modulo operation, and Ψm is given in a following table:Ψ2Ψ31−1.