Long training sequence method and device for wireless communications

摘要

A method and device for transmitting a frame of a wireless communication begins by generating a preamble of the frame that includes a short training sequence and at least one long training sequence. The at least one long training sequence includes non-zero energy on each of a plurality of subcarriers except a DC subcarrier. The at least one long training sequence corresponds to the number of antennas and applicable wireless communication standards. A matrix is defined to represent the at least one long training sequence. The preamble is compatible with legacy and current standards. A channel is defined with a set of sub carriers to transmit the frame.

主权项

1. A system for wireless communication over one or more transmit streams, the system comprising:
at least one processor operable to:
generate one or more training sequences according to a map matrix, wherein the size of the map matrix corresponds to the number of transmit streams; andformat one or more frames for transmission, the one or more frames comprising one or more preambles, and the one or more preambles comprising the one or more training sequences; and a plurality of RF transmitters, wherein the at least one processor is operable to send the one or more frames to a subset of the plurality of RF transmitters, wherein the number of RF transmitters in the subset is less than or equal to the total number of transmitters in the plurality of RF transmitters, and the number of RF transmitters in the subset is based on the number of transmit streams.