| 摘要 |
In a method for generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are encoded using a forward error correction (FEC) encoder. Also, the information bits are encoded according to a block coding scheme, where m copies of each bit are included in the information bits, and one or more bits in the m copies of each bit are flipped. The information bits are mapped to a plurality of constellation symbols, and a plurality of orthogonal frequency division multiplexing (OFDM) symbols are generated to include the plurality of constellation symbols. The PHY data unit is generated to include the plurality of OFDM symbols. |
| 主权项 |
1. A method, comprising:
generating, with a processing device, a first preamble for a first data unit that is to be transmitted via a communication channel, wherein the first preamble includes a first signal field, wherein the first signal field provides information for interpreting the first data unit, and wherein the first signal field is modulated according to a first modulation technique; generating, with the processing device, the first data unit according to a first data unit format, wherein the first data unit includes the first preamble; generating, with the processing device, a second preamble for a second data unit that is to be transmitted via the communication channel, wherein
the second preamble includes a second signal field,the second signal field provides information for interpreting the second data unit, andgenerating the second preamble includes modulating the second signal field according to a second modulation technique different than the first modulation technique to signal to a receiver that the second data unit is formatted according to a second data unit format different than the first data unit format; generating a data portion of the second data unit, including
encoding a plurality of bits using a binary convolutional code (BCC) encoder to generate a plurality of BCC coded bits, wherein the BCC encoder continuously encodes incoming bits,partitioning the plurality of BCC coded bits into a plurality of blocks of BCC coded bits,encoding the plurality of blocks of BCC coded bits according to a block coding scheme to generate a plurality of block coded bits,mapping the plurality of block coded bits to a plurality of constellation symbols, andgenerating a plurality of orthogonal frequency division multiplexing (OFDM) symbols based on the plurality of constellation symbols; and generating, with the processing device, the second data unit according to the second data unit format, wherein the second data unit includes the second preamble and the data portion; wherein generating the first data unit according to the first data unit format does not include using the block coding scheme. |
