Method and system for multi-antenna preambles for wireless networks preserving backward compatibility

A system for processing multiple preambles for a wireless signal, the system comprising:

• at least one processor that selects a plurality of training sequences from a preamble of the wireless signal, each of said selected plurality of training sequences comprising a plurality of energy tones;
• and
• said at least one processor shifts in time domain, said selected plurality of training sequences to generate a plurality of subsequent preambles for transmission, wherein each of said generated plurality of subsequent preambles comprises said plurality of energy tones.

A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for processing multiple preambles for a wireless signal, the at least one code section being executable by a machine to perform steps comprising:

• selecting a plurality of training sequences from a preamble of the wireless signal, each of said selected plurality of training sequences comprising a plurality of energy tones;
• and
• shifting, in time domain, said selected plurality of training sequences from said preamble to generate a plurality of subsequent preambles for transmission, wherein each of said generated plurality of subsequent preambles comprises said plurality of energy tones.

A system for processing a wireless signal, the system comprising:

• at least one processor that selects a plurality of training sequences from at least a portion of a preamble of the wireless signal, each of said selected portion of said preamble comprising a plurality of energy tones;
• and
• said at least one processor cyclically shifts in time domain said selected plurality of training sequences from said at least a portion of said preamble to generate a plurality of secondary preambles for transmission, wherein each of said plurality of secondary preambles comprises said plurality of energy tones, and are transmitted concurrently with said selected portion of said preamble.

A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for processing multiple preambles for a wireless signal, the at least one code section being executable by a machine to perform steps comprising:

• selecting a plurality of training sequences from at least a portion of a preamble of the wireless signal, each of said selected portion of said preamble comprising a plurality of energy tones;
• and
• cyclically shifting, in time domain, said selected plurality of training sequences from said at least a portion of said preamble to generate a plurality of secondary preambles for transmission, wherein each of said plurality of secondary preambles comprises said plurality of energy tones, and are transmitted concurrently with said selected portion of said preamble.