Systems and methods for implementing an ofdma ltf design for wireless network communication

A method for aligning high efficiency long training fields (“HE-LTF”) for data corresponding to a plurality of users, the method comprising:

• obtaining, at a wireless transmitter, data for transmission to a plurality of users via a plurality of wireless channels;
• determining a respective number of spatial streams for each user of the plurality of users for transmission via a data frame;
• determining a size of a template matrix, wherein a first number of columns of the template matrix corresponds to at least a maximum number of spatial streams among the plurality of users and a first number of rows of the template matrix corresponds to at least the maximum number of spatial streams among the plurality of users;
• accessing, from memory, the template matrix of the determined size;
• generating a respective spatial mapping matrix for each user of the plurality of users based on the template matrix, wherein each respective spatial mapping matrix comprises the first number of columns in the template matrix, and wherein each respective matrix comprises a second number of rows equal to the respective number of spatial streams;
• generating, based on the respective spatial matrix for each of the plurality of users, the data frame comprising aligned HE-LTF symbols;
• and
• transmitting, via the wireless transmitter, the data frame via the plurality of wireless channels to the plurality of users.

A system for aligning high efficiency long training fields (“HE-LTF”) for data corresponding to a plurality of users, the system comprising:

• a wireless transmitter configured to:
• obtain, at a wireless transmitter, data for transmission to a plurality of users via a plurality of wireless channels;
• control circuitry coupled to the wireless transmitter, configured to:
• determine a respective number of spatial streams for each user of the plurality of users for transmission via a data frame;
• determine a size of a template matrix, wherein a number of columns of the template matrix corresponds to at least a maximum number of spatial streams among the plurality of users and a first number of rows of the template matrix corresponds to at least the maximum number of spatial streams among the plurality of users;
• access, from memory, the template matrix of the determined size;
• generate a respective spatial mapping matrix for each user of the plurality of users based on the template matrix, wherein each respective spatial mapping matrix comprises the first number of columns in the template matrix, and wherein each respective matrix comprises a second number of rows equal to the respective number of spatial streams;
• generate, based on the respective spatial matrix for each of the plurality of users, the data frame comprising aligned HE-LTF symbols;
• and
• the wireless transmitter further configured to:
• transmit the data frame via the plurality of wireless channels to the plurality of users.