Modified preamble for programmable transmitter

Telecommunications – Transmitter – Plural separate transmitters or channels

Reexamination Certificate

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Details

C455S324000, C455S562100, C375S299000, C370S350000

Reexamination Certificate

active

07974591

ABSTRACT:
A programmable transmitter generates a frame preamble to train a receiver with respect to a communication link format that corresponds to a transmission mode wherein the transmission mode may comprise transmitting the communication link over one or more antennas. Generally, the invention includes generating a preamble with an arrangement that depends upon whether a Greenfield (high data rate) or mixed mode transmission is to occur and that depends upon a number of spatial streams that are to be generated. One format for high data rate transmission includes a short training sequence, a long training sequence and a signal field. The mixed mode transmission further includes a legacy prefix.

REFERENCES:
patent: 7460478 (2008-12-01), Kim
patent: 7535972 (2009-05-01), Hammerschmidt et al.
patent: 7558537 (2009-07-01), Trachewsky et al.
patent: 7573877 (2009-08-01), Itakura
patent: 7630444 (2009-12-01), Puri et al.
patent: 7830907 (2010-11-01), Petranovich et al.

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