Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate
2004-07-27
2010-12-28
Payne, David C (Department: 2611)
Pulse or digital communications
Transmitters
Quadrature amplitude modulation
C375S264000, C375S261000, C370S208000, C370S335000, C370S474000
Reexamination Certificate
active
07860186
ABSTRACT:
A transmitting apparatus comprising circuitry operable to generate a plurality of bit sequences using bits included in a first data block and a second data block, circuitry operable to control the plurality of bit sequences to correspond to a signal point on the phase plane, comprising a bit sequence generating unit operable to control the generation of the bit sequences to adjust an occupation rate occupied with predetermined bits included in the first data block to be closer to an occupation rate occupied with predetermined bits included in the second data block in regard to bit positions of the predetermined bits, based on an error tolerance of the respective bit sequences generated resulting from the correspondence to a signal point on the phase plane, and circuitry operable to transmit the signals obtained by multi-level modulations in accordance with each signal point.
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Miyazaki Shunji
Obuchi Kazuhisa
Yano Tetsuya
Fujitsu Limited
Guarino Rahel
Myers Wolin, LLC.
Payne David C
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