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Doppler shift is an important parameter in vehicular communications, since it represents the channel varying rate and is widely used in wireless signal processing. Hence, this paper first study the he bias of Doppler shift estimator based on level crossing rate (LCR), then an iterative process is presented. Moreover, we propose a polynomial fitting to further improve the Doppler shift estimation....
The time offset estimation (TOE) is an important issue in TD-SCDMA downlink, which conventionally is realized together with downlink synchronization code acquisition, and therefore the correlation detection is prefered. However, the resulting complexity is very high due to the start search within a full frame. In order to tackle this problem, this paper presents a coarse TOE scheme independent of...
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