| 摘要 |
Proposed herein is method and device for generating a sequence for a STF field in a wireless LAN system. A STF signal is included in a field that is used for enhancing AGC estimation of a MUMO transmission. The STF signal is used for an uplink transmission, and the STF signal may be used for an uplink MU PPDU STF, which is transmitted from multiple STAs. The STF signal may be used for at least any one of a first frequency band and a second frequency band, and wherein a first frequency bandwidth may correspond to 20 MHz, and a second frequency bandwidth may correspond to 40 MHz. The STF signal may be generated based on a M sequence. In case the STF signal is being used for the first frequency band, the STF signal may be generated from a {C1*M, 0, C2*M} sequence. |
| 主权项 |
1. As a method for configuring a physical layer protocol data unit (PPDU) in a wireless LAN system, the method comprising:
configuring, by a transmitting device, a short training field (STF) signal being used for enhancing automatic gain control (AGC) estimation of a multiple input multiple output transmission (MIMO transmission); and transmitting, by the transmitting device, a PPDU including the STF signal to a receiving device, wherein the STF signal is used for at least any one of a first frequency band and a second frequency band, and wherein a bandwidth of the second frequency band is two times larger than a bandwidth of the first frequency band, wherein the STF signal is generated based on a M sequence, wherein, in case the STF signal is being used for the first frequency band, the STF signal is generated from a {C1*M, 0, C2*M} sequence, and C1 and C2 are coefficients, wherein, in case the STF signal is being used for the second frequency band, the STF signal is generated from a {C3*M, C4*M, 0, C5*M, C6*M} sequence, and C3, C4, C5, and C6 are coefficients, wherein the M sequence is defined as shown below: M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}*(1+j)+sqrt(½), and wherein sqrt( ) represents a square root. |
