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The traditional time delay methods cannot obtain the time delay efficiently in the digital predistortion subsystem (DPDS) when the wide bandwidth, multi-carrier signals with large frequency space is used in the communication system. A time delay estimation method, which can estimate the loop delay between the time delayed feedback signal and the input signal in DPDS with high accuracy and high efficiency,...
A high-efficiency time delay estimation method is presented to obtain the accurate loop delay (including integer and fractional loop delay) between the input signal and the time delayed feedback signal in digital predistortion subsystem within the same process. Compared with the conventional, a sampling position adjusting scheme for complex signals using the piecewise-parabolic filter assisted by...
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