| 摘要 |
Provided is a method for transmitting a data unit in a wireless local area network system, according to one embodiment. The method comprises transmitting a signal field, transmitting a first data symbol for a first data field, and transmitting a second data symbol for a second data field. The signal field, the first data symbol, and the second data symbol are transmitted through a 1 MHz channel bandwidth having a band of 1 GHz or less. Two pilot tones are inserted to each of the first data symbol and the second data symbol. |
| 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; and transmitting, by the transmitter, the PPDU over a 1 MHz bandwidth, wherein the data field is transmitted in N orthogonal frequency division multiplexing (OFDM) symbols, wherein pilots for the data field are mapped in the N OFDM symbols as follows:
when k is −7, Pnk=Ψn mod 2, when k is 7, Pnk=Ψ(n+1)mod 2, and
when k is neither 7 nor −7, Pnk=0, where Pnk denotes a value of a pilot at subcarrier k for OFDM symbol n, n=0, . . . , N−1, ‘mod’ denotes modulo operation and Ψ0=1, Ψ1=−1, wherein a guard interval (GI) used in the data is a short GI or a long GI, and wherein a GI used for an initial OFDM symbol of the N OFDM symbol in the data field is set to the long GI when the signal field indicates that the short GI is used for the data field. |
