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The reaction of pyridin‐2(1H)‐ones with PhICl2 and NH4SCN enables an efficient regioselective thiocyanation, leading to the synthesis of the biologically interesting C5 thiocyanated 2‐pyridones in good to high yields. The mechanistic pathway of this metal‐free approach is postulated to involve the formation of the reactive thiocyanogen chloride from the reaction of PhICl2 and NH4SCN followed with...
Wiretap channel has caught a lot of attention recently in secured communications. A commonly adopted wiretap model is that the main channel is noiseless and the eavesdroppers channel is binary erasure channel (BEC). LDPC codes have been applied to achieve strong secrecy. However, it lacks design flexibility balancing on security and reliability, and cannot illustrate the fundamental tradeoffs among...
MIMO systems have caught a lot of attentions mainly because of the boost of the information rate. However, so far the existing results only consider continuous signals at the receiver side. The effect of detectors on the mutual information has not been addressed. In this paper, we study the mutual information between the transmitted discrete signal and the quantized signal given by maximum-likelihood...
We propose a computationally efficient scheme to decode two-dimensional (2D) intersymbol interference (ISI) channel with M-ary input. The basic idea is to equalize the channel stage by stage. To begin with the stage with the highest signal power level, the BCJR algorithm is used to equalize each level by averaging the interference of the undecoded levels. Both the hard and soft decisions are passed...
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