Pulse or digital communications – Receivers – Interference or noise reduction
Patent
1994-04-22
1995-07-04
Chin, Stephen
Pulse or digital communications
Receivers
Interference or noise reduction
375346, H04B 110
Patent
active
054307708
ABSTRACT:
A composite signal recognizer separator, and PSK, AM, FM demodulator apparatus for processing received communication signals. The receiver utilizes N demodulators cascadely-coupled, where N is equal to or greater than the number of co-channel signals or perceived interference. Detailed in both dual and single stages cascaded fashion, the receiver first tracks to a predominant (stronger) signal, and regeneratively improves track on other (weaker) signals by subtracting predominant noise portion from the input of further demodulation stages. A unified approach to PSK carrier phase tracking, character data tracking, and recovery clock tracking is utilized.
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Chin Stephen
Eppele Kyle
Hamann H. F.
Luu Huong
Murrah M. Lee
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