Method and device for digital modulation with low transition density
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United States of America Patent
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Apr 7, 2015
Grant Date -
May 8, 2014
app pub date -
Oct 30, 2013
filing date -
Nov 2, 2012
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Abstract
The present invention relates to a digital modulation method and a corresponding modulator. The modulator comprises a transcoder (110) followed by a FIFO register (120) and a 2-PSK modulator (130). The transcoder codes a binary word of fixed size into a code word of variable size using a transcoding table. The transcoding table codes at least one first binary word, leading to a first number of phase transitions at the output of the modulator, into a second word of size greater than that of the first word, leading to, at the output of the modulator, a second number of phase transitions less than the first number of phase transitions.
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