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As a manner of communications with the high spectral and energy efficiency, cognitive underwater acoustic communications based on index modulation (CUAC-IM) have been investigating by us in more recent years. Like other communication system, estimation algorithm on frequency offset (FO) caused by the relative motion of mobile station is crucial to CUAC-IM system. In this paper, system model, especially...
In this paper, a new frequency estimation scheme is proposed for the downlink of Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system over frequency flat Rician fast fading channels. The proposed algorithm exploits the synchronous downlink sequence of the downlink pilot time slot in the sub-frame, and takes account of the case where the carrier frequency offset (CFO) and the Doppler...
The time-frequency method is a promising phase adjustment technique for inverse synthetic aperture radar (ISAR). Usually, the time-frequency method estimates the translational Doppler frequency and thus the translational Doppler phase by detecting the peaks of the time-frequency representation at different times. Unfortunately, it has some defects, such as the sensitivity to noise and target scintillation,...
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