Midamble operation in a wireless local area network

A station (STA) configured to operate in a wireless network, the station comprising:

• a memory device storing a set of instructions;
• and
• a processor coupled to the memory device, wherein the set of instructions when executed by the processor cause the STA to:
• determine a bandwidth of a frame to be transmitted by the station;
• generate a long training field for the frame, wherein the long training field includes a set of pilot tones located at a set of subcarrier positions,
• wherein in response to the bandwidth of the frame is 10 MHz, the set of subcarrier positions includes four subcarrier positions, wherein the four subcarrier positions are set as {−21−α1,−7−α2,7+α3,21+α4}, wherein α1, α2, α3, and α4 are equal to a value of 1, and
• wherein in response to the bandwidth of the frame is 20 MHz, the set of subcarrier positions includes six subcarrier positions, wherein the six subcarrier positions are set as {−53−β1,−25−β2, −11−β3,11+β4,25+β5,53+β6}, wherein β1, β2, β3, β4, β5, and β6 are equal to a value of 1;
• and
• transmit the frame with the long training field to a recipient.

A non-transitory machine readable medium that stores instructions, which when executed by a processor of a station (STA), causes the STA to perform:

• determining a bandwidth of a frame to be transmitted by the STA;
• generating a long training field for the frame, the long training field including a set of pilot tones located at a set of subcarrier positions,
• wherein in response to the bandwidth of the frame is 10 MHz, the set of subcarrier positions includes four subcarrier positions, wherein the four subcarrier positions are set as {−21−α1,−7−α2,7+α3,21+α4}, wherein α1, α2, α3, and α4 are equal to a value of 1, and
• wherein in response to the bandwidth of the frame is 20 MHz, the set of subcarrier positions includes six subcarrier positions, wherein the six subcarrier positions are set as {−53−β1,−25−β2, −11−β3,11+β4,25+β5,53+β6}, wherein β1, β2, β3, β4, β5, and β6 are equal to a value of 1;
• and
• transmitting the frame with the long training field to a recipient.