Method and apparatus for generating STF signal using binary sequence in wireless LAN system
AssigneeLG Electronics Inc.
InventorsEunsung Park, Jinsoo Choi, Hangyu Cho
Life of this patent
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Abstract
Disclosed are a method and an apparatus for generating an STF signal usable in a wireless LAN system. The STF signal is included in a field used to improve AGC estimation of a MIMO transmission. A portion of the STF signal is used to transmit an uplink, and can be used for uplink MU PPDUs transmitted from a plurality of STAs. The STF that is suggested, for example, is used for a 40 MHz band or an 80 MHz band and can be generated based on a sequence in which a predetermined M sequence is repeated. The predetermined M sequence can be a binary sequence of which the length is 15 bits.
Claims14
A method in a wireless local area network (LAN) system, the method comprising:
- generating, by a transmitting station (STA), a short training field (STF) signal based on an STF sequence and a frequency band used for the STF signal,
- wherein the STF sequence is defined as {M, −1, M, −1, −M, −1, M, 0, −M, 1, M, 1, −M, 1, −M}*(1+j)/sqrt(2), wherein sqrt( ) denotes a square root,
- wherein M is a sequence having a length of 15 bits and is defined as M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1},
- transmitting, by the transmitting STA, a packet including the generated STF signal on the frequency band to a receiving STA.
A transmitting station (STA) of a wireless local area network (LAN) system, comprising:
- a radio frequency (RF) unit transmitting or receiving radio signals;
- and
- a processor controlling the RF unit,
- wherein the processor is configured:
- to generate a short training field (STF) signal based on an STF sequence and a frequency band used for the STF signal,
- wherein the STF sequence is defined as {M, −1, M, −1, −M, −1, M, 0, −M, 1, M, 1, −M, 1, −M}*(1+j)/sqrt(2), wherein sqrt( ) denotes a square root,
- wherein M is a sequence having a length of 15 bits and is defined as M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1},
- control the RF unit to transmit a packet including the generated STF signal on the frequency band to a receiving STA.
Dependencies are inferred from the claim text.