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This paper proposes a novel wide area back-up protection algorithm that measures synchronized information from different buses in region. The amplitude of voltage fault component from different buses is compared, and the bus with maximum magnitude will be selected. Hence, suspected fault line set could be established according to the sub-graph and complete incidence matrix of selected buses. Then,...
By making use of the characteristic of the cost function MSSO (Mean of the Square Soft Outputs), a new method of carrier phase synchronization and decoding for the turbo-coded systems is presented. Firstly, a short training sequence is used to achieve the initial phase estimation and to narrow the phase searching range. Secondly, three decoding sequences with the largest MSSO values are chosen by...
In this paper, we consider the effect of different rules of symbol decision on the performance of decision-directed synchronizers for LDPC-coded systems. Different from the conventional hard symbol decision based on the Maximum-A- Posteriori (MAP) criterion, soft symbol decision can be considered as the Minimum-Mean-Square-Error (MMSE) estimation of the transmitted symbol. By whether or not the coding...
For the symbol timing recovery techniques which are susceptible to carrier phase offset, clockless phase recovery is necessary in advance. In this paper, we propose a clockless nondata-aided (NDA) feedback phase error detector (PED) for M-ary phase-shift keying (MPSK) signal. Its derivation is given based on maximum likelihood (ML) criterion. The clockless NDA (Mthpower)PED can also be generalized...
We study the multi-robot synchronization on a segment. The goal is for each robot to move along a subsegment of equal length in equal time interval with potential impacts. To achieve the synchronization, we propose a decentralized algorithm by designing impact law, which does not depend on the position of the robot, but on the time information. Specifically, ??the time interval between two consecutive...
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