Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-10-17
2006-10-17
Corrielus, Jean B. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S144000
Reexamination Certificate
active
07123644
ABSTRACT:
A peak cancellation apparatus is included in a base station transmission unit to cancel the peak component of the peak signal. Thus, the base station transmission unit can be implemented with a lower capacity power amplifier. In addition, an existing power amplifier can be replaced with a low-priced power amplifier, so that an expense can be reduced. Moreover, since only the digital signal having the limited PAR is used, the degradation of the signal quality caused in conversion of the digital signal to the analog signal can be prevented. The peak cancellation apparatus includes a peak cancellation unit positioned between a multiplier and a pulse shaping filter or between the pulse shaping filter and a D/A converter and removing a peak component of the peak signal.
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Kim Tae-Hyun
Park Won-Hyoung
Corrielus Jean B.
Fleshner & Kim LLP.
LG Electronics Inc.
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