System for improving base station amplifier performance
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United States of America Patent
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Dec 11, 2001
Grant Date -
N/A
app pub date -
Oct 16, 1998
filing date -
Oct 16, 1998
priority date (Note) -
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Abstract
Base station multi-channel power amplifier (MCLPA) performance is improved by reducing intersymbol correlation. The system produces a number of bit stream signals to be modulated into a number of symbol stream signals, and includes means for introducing an offset/time delay to the symbol stream signals to avoid correlation of the symbol transitions in the MCLPA. By doing this, the system avoids multiple symbols going into transition at the same time. By preventing the signal peaks from occurring at the same time and reinforcing to form a larger peak signal, the system reduces the maximum peak signal power, without adversely affecting the average signal power. This reduces the peak power requirements placed on the MCLPA. Preferably the sum total of all offsets is less than one symbol period.
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