Pulse or digital communications – Repeaters – Testing
Patent
1995-06-07
1997-05-06
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
375206, 375343, H04B 1707, H04B 106
Patent
active
056278560
ABSTRACT:
Apparatus and method for despreading a received continuous phase modulated spread spectrum signal includes a power divider for dividing a received spread spectrum signal into a real signal and an imaginary signal. A real CPM correlator demodulates the real signal into I and Q components and separately correlates the real I component and the real Q component without generating a correlation sequence, thereby performing self-synchronizing correlation. Likewise, an imaginary CPM correlator demodulates the imaginary signal into I and Q components and separately correlates the imaginary I component and the imaginary Q component without generating a correlation sequence, thereby performing self-synchronizing correlation. The real I and imaginary I correlation signals are combined into a final I correlation signal, and the real Q and imaginary Q correlation signals are combined into a final Q correlation signal.
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Radio Sub-system Synchronization, GSM Recommendation 05.10 (Ver. 3.5.1), Released by ETSI/PT,
Burbach Mark
Durrant Randolph L.
Chin Stephen
Gluck Jeffrey W.
Omnipoint Corporation
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