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A new method to extract fetal electrocardiogram (FECG) signal from the mixed ECG signals is presented by introducing time-correlation to traditional independent component analysis (ICA). FECG signal extraction is a hot research topic because the FECG signal reflects the heart situation of the fetus and provides the basis of early diagnosis. In this paper, an objective function based on time-correlation...
The traditional truncated-binary-exponential-backoff contention-resolution scheme can address the collision problem of carrier-sense multiple-access networks when the number of users is limited. However, its performance significantly worsens when many users join the contention or when the network is saturated. To address this issue, we propose a demand-assigned multiaccess (DAMA) time-division multiple-access...
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