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APPARATUS FOR REDUCING AUTO-CORRELATION OR CROSS-CORRELATION IN WEAK CDMA SIGNALS
APPARATUS FOR REDUCING AUTO-CORRELATION OR CROSS-CORRELATION IN WEAK CDMA SIGNALS
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机译:用于减少弱CDMA信号中的自相关或互相关的设备
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摘要
The present invention discloses methods, apparatuses, and systems for eliminating auto- and cross-correlation in weak signal CDMA systems, such as GPS systems. The invention uses parallel data paths that allow standard correlation of signals in parallel with verification of the lock signal to determine whether the system has locked onto the proper signal within the scanned signal window. The invention can be made with multiple CPUs, a single CPU with dual input modes, on multiple IC chips, or as a single IC chip solution for small, low cost reception, downconversion, correlation, and verification systems.
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