Pulse or digital communications – Transmitters
Reexamination Certificate
2011-05-24
2011-05-24
Odom, Curtis B (Department: 2611)
Pulse or digital communications
Transmitters
C375S260000, C375S267000, C375S347000, C370S203000, C370S208000
Reexamination Certificate
active
07949067
ABSTRACT:
The present invention, generally speaking, provides interleavers and methods of interleaving that satisfy the need for backward compatibility while effectively addressing competing design objectives. In accordance with one aspect of the invention, data is transmitted using a number of transmit antennas greater than an expected number of receive antennas. At least one pair of transmit antennas is formed (ant1, ant_N), and multiple second data streams (311, 312) are formed from a first data stream, successive bits in said first data stream being assigned to different ones of said second data streams. Block interleaving (313, 314) of multiple respective ones of said second data streams is individually performed. During successive transmission intervals, the pair of transmit antennas is used to transmit a pair of data symbols taken from different ones of said second data streams, followed by an equivalent transformed pair of data symbols.
REFERENCES:
patent: 6807145 (2004-10-01), Weerackody et al.
patent: 2003/0235149 (2003-12-01), Chan et al.
patent: 2004/0081131 (2004-04-01), Walton et al.
patent: 2006/0008031 (2006-01-01), Vummintala et al.
Ghosh Monisha
Li Pen
NXP B.V.
Odom Curtis B
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