Long training field (LTF) within wireless communications

A wireless communication device comprising:

• a processor configured to:
• generate a first orthogonal frequency division multiple access (OFDMA) packet for transmission via a 20 MHz communication channel, wherein the first OFDMA packet includes a first long training field (LTF) that includes a first binary sequence mapped onto a plurality of OFDMA sub-carriers, wherein the first binary sequence includes values of +1, 0, and −1;
• generate a second OFDMA packet for transmission via the 20 MHz communication channel, wherein the second OFDMA packet is twice as long as the first OFDMA packet and includes a second LTF that includes a second binary sequence mapped onto the plurality of OFDMA sub-carriers, wherein the second binary sequence is different than the first binary sequence and includes the values of +1, 0, and −1;
• generate a third OFDMA packet for transmission via the communication channel, wherein the third OFDMA packet is one-half as long as the first OFDMA packet and includes a third LTF that includes a third binary sequence mapped onto the plurality of OFDMA sub-carriers based on a predetermined spacing pattern, wherein the third binary sequence is different than the first binary sequence and the second binary sequence and includes the values of +1, 0, and −1;
• transmit the first OFDMA packet to a first other wireless communication device via the 20 MHz communication channel using a first resource unit (RU) allocation of a plurality of RU allocations;
• and
• transmit the second OFDMA packet to at least one of the first other wireless communication device or a second wireless communication device via the 20 MHz communication channel using the first RU allocation or a second resource unit (RU) allocation of the plurality of RU allocations;
• and
• transmit the third OFDMA packet to at least one of the first other wireless communication device, the second wireless communication device, or a third other wireless communication device via the communication channel, wherein each RU allocation of the plurality of RU allocations specifies a respective one or more RUs of one or more RU sizes for the 20 MHz communication channel, and wherein peak to average power ratio (PAPR) of at least one of the first LTF or the second LTF increases across the plurality of RU allocations as size of the one or more RU sizes increases across the plurality of RU allocations.

A method for execution by a wireless communication device, the method comprising:

• generating a first orthogonal frequency division multiple access (OFDMA) packet for transmission via a communication channel, wherein the first OFDMA packet includes a first long training field (LTF) that includes a first binary sequence mapped onto a plurality of OFDMA sub-carriers, wherein the first binary sequence includes values of +1, 0, and −1;
• generating a second OFDMA packet for transmission via the communication channel, wherein the second OFDMA packet is twice as long as the first OFDMA packet and includes a second LTF that includes a second binary sequence mapped onto the plurality of OFDMA sub-carriers, wherein the second binary sequence is different than the first binary sequence and includes the values of +1, 0, and −1;
• transmitting, via a communication interface of the wireless communication device, the first OFDMA packet to a first other wireless communication device via the communication channel using a first resource unit (RU) allocation of a plurality of RU allocations;
• and
• transmitting, via the communication interface of the wireless communication device, the second OFDMA packet to at least one of the first other wireless communication device or a second wireless communication device via the communication channel using the first RU allocation or a second resource unit (RU) allocation of the plurality of RU allocations, wherein each RU allocation of the plurality of RU allocations specifies a respective one or more RUs of one or more RU sizes for the communication channel, and wherein peak to average power ratio (PAPR) of at least one of the first LTF or the second LTF increases across the plurality of RU allocations as size of the one or more RU sizes increases across the plurality of RU allocations.