Data and pilot sub-carrier or tone design for OFDM/OFDMA in wireless communications

摘要

A wireless communication device (alternatively, device) includes a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other wireless communication device(s) and to generate and process signals for such communications. A device is configured to generate various orthogonal frequency division multiplexing (OFDM) and/or orthogonal frequency division multiple access (OFDMA) packets (e.g., frames, signals, etc.) that are based on any of a group of set of OFDM/A frame structures. Across the various OFDM/A frame structures, the ratio of pilot sub-carriers to data sub-carriers across resource units (RUs) of decreases as the total number of sub-carriers across the RUs increases. In addition, some of the OFDM/A frame structures include different total number of sub-carriers yet same number of pilot sub-carriers. The device is configured to perform adaptation among and between the various OFDM/A frame structures based on any one or more considerations.

主权项

1. A wireless communication device comprising:
a communication interface; and a processor, at least one of the processor or the communication interface configured to:
support communications based on any of a plurality of orthogonal frequency division multiple access (OFDMA) frame structures, wherein a ratio of pilot sub-carriers to data sub-carriers across resource units (RUs) of the plurality of OFDMA frame structures decreases as total sub-carriers across the RUs of the plurality of OFDMA frame structures increases;generate an OFDMA packet based on an OFDMA frame structure of the plurality of OFDMA frame structures that includes a set of RUs and a set of unused sub-carriers that are devoid of modulation data, wherein at least some RUs of the set of RUs include a respective common number of contiguous sub-carriers, and wherein the set of unused sub-carriers are interspersed with the set of RUs; andtransmit the OFDMA packet to at least one other wireless communication device.