Signal mapper for reducing error coefficient
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United States of America Patent
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May 21, 2013
Grant Date -
Oct 14, 2010
app pub date -
Apr 9, 2009
filing date -
Apr 9, 2009
priority date (Note) -
Expired
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Abstract
An improved mapping policy, signal mapper, transmitter, receiver, and communication system are introduced. The improved signal mapping policy alternates between standard and inverted bit mapping functions at selected phase states to reduce the error coefficient of MSK and other types of CPFSK signals. The proposed policy can more generally be applied to other types of signals with memory as well. Simulations show that the mapping policy can significantly improve performance particularly at lower to moderate SNR values.
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