Enhanced resource unit allocation in wireless local area network

A device for encoding a bitstream for a frame in a wireless transmission, the device 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 device to:
• receive the bitstream;
• perform encoding on the bitstream to generate an encoded bit stream that includes the bitstream and parity bits;
• process the encoded bitstream to generate constellation points in one or more encoded streams;
• determine a distance between subcarriers in an Orthogonal Frequency Division Multiplexing (OFDM) symbol of the frame;
• perform low-density parity-check (LDPC) tone mapping based on the one or more encoded streams and on the determined distance between subcarriers to generate a permuted stream of complex numbers, wherein the distance between subcarriers is determined to be either (1) 18 for a first resource unit size used in the frame or (2) 20 for a second resource unit size used in the frame;
• and
• set an indication in the frame as to whether data is duplicated between a plurality of resource units of the frame.

A non-transitory machine-readable medium that stores instructions, which when executed by a processor of a wireless device, cause the wireless device to:

• receive the bitstream;
• perform encoding on the bitstream to generate an encoded bit stream that includes the bitstream and parity bits;
• process the encoded bitstream to generate constellation points in one or more encoded streams;
• determine a distance between subcarriers in an Orthogonal Frequency Division Multiplexing (OFDM) symbol of the frame;
• and
• perform low-density parity-check (LDPC) tone mapping based on the one or more encoded streams and on the determined distance between subcarriers to generate a permuted stream of complex numbers,
• wherein the distance between subcarriers is determined to be either (1) 18 for a first resource unit size used in the frame or (2) 20 for a second resource unit size used in the frame, and
• wherein the second resource unit size is one of 2×996 tones, 3×996 tones, or 4×996 tones.