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This paper presented a multi-rate Star-QAM encoding and decoding method based on the hierarchical coding which could be adjusted to achieve the channel coding efficiency and modulation. The design is based on the combination of soft / hard decision in layered decoding. We have successfully increased BER performance to 0.5dB which achieved 10−5 when SNR is 11 compared to no stratification codec considering...
As the feature size shrinks to the nanometer scale, SRAM-based FPGAs are increasingly vulnerable to soft errors. Checkpointing is an effective fault recovery technique that can restore the faulty system to its previous fault free state. Since the function of the system needs to be suspended during checkpoint saving and checkpoint restoring, so the Mean Time to Repair (MTTR) of the system is critical...
Magnetite nanoparticles are found to assemble into monodisperse Fe 3 O 4 microspheres with diameters ∼300nm and open pores on the shells in ethylene glycol (EG) in the presence of polyethylene 2000 (PEG 2000) and a small quantity of polyethyleneimine (PEI). The hysteresis loops of the magnetic microspheres are measured by a vibrating sample magnetometer (VSM), the ferromagnetic signature...
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