16 QAM modulator and method of 16 QAM modulation
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United States of America Patent
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Jul 18, 2006
Grant Date -
Feb 2, 2006
app pub date -
Jul 27, 2004
filing date -
Jul 27, 2004
priority date (Note) -
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Abstract
In one embodiment, the 16-quadrature amplitude modulation QAM modulator includes a logic operation device performing a logic operation on first-fourth bits of received data to generate first and second logic outputs. A first quadrature phase shift keying QPSK modulator receives the first and second bits of received data and generates a first QPSK signal. A second QPSK modulator receives the first and second logic outputs and generates a second QPSK signal. A combiner combines the first and second QPSK signals to generate a 16-QAM signal.
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