Pulse or digital communications – Spread spectrum – Time hopping
Reexamination Certificate
2005-02-10
2010-06-01
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Spread spectrum
Time hopping
C375S130000, C375S351000, C375S147000, C375S340000
Reexamination Certificate
active
07729407
ABSTRACT:
A transmitted reference ultra-wide band communication signal embodied in an electromagnetic wave and configured to communicate a data value includes a first frame having a first reference pulse and a first data pulse. The first reference pulse has a reference polarity and the first data pulse has a data polarity. The first reference pulse is separated from the first reference pulse by a delay time. The reference polarity is set based on a predetermined reference value and a first pseudo-random polarity code sequence, and the data polarity is set based on the data value and a second pseudo-random polarity code sequence. A receiver configured to receive the signal, a transmitter configured to transmit the signal, and a system of transmitters and receivers are also provided.
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Gezici Sinan
Sahinoglu Zafer
Liu Shuwang
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Renesas Technology Corp.
Timory Kabir A
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