Synchronization algorithm for a direct sequence spread spectrum system with frequency downconversion
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United States of America Patent
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Issued Date -
Jan 2, 2003
app pub date -
Jan 4, 2001
filing date -
Jan 4, 2001
priority date (Note) -
Abandoned
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Abstract
A frequency downconversion receiver is provided that does not require predictive filtering for signal acquisition and synchronization. A sync block modulates a voltage-controlled oscillator (VCO) with twice the frequency of the incoming modulated receive signal. From this, the bit position of the incoming data can be determined. The value of the incoming data can be determined from whether the VCO output and the demodulator output have consecutive predetermined values.
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