Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation
Patent
1993-07-06
1997-02-04
Chin, Wellington
Pulse or digital communications
Systems using alternating or pulsating current
Angle modulation
375308, 375330, 332103, 332144, H04L 2710
Patent
active
056006764
ABSTRACT:
A digital radio communication system achieves low envelope variations in a transmitted signal by encoding digital information as phase angle differences in a transmitted radio signal and by constraining the maximum possible phase angle difference. This reduction in envelope variation relaxes the linearity requirements for a desired level of distortion suppression of a radio frequency (RF) amplifier means employed for transmitting the radio signal. In addition, lower envelope variations imply a higher average transmit power for a given maximum transmitted power, thereby extending range and battery life.
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Chin Wellington
Ericsson - GE Mobile Communications Inc.
Luther William
LandOfFree
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