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Inertial navigation system is an autonomous navigation system, but there exists error accumulation. The geomagnetic navigation has the features of long-term stability. In order to solve the problem that the inertial navigation system has accumulated errors, the geomagnetic information is introduced in this paper. Based on the actual situation, the geomagnetic aided inertial navigation system error...
Cooperative energy spectrum sensing has been proved effective to detect the spectrum holes in Cognitive Radio (CR). However, few studies make mention of wavelet transform based signal processing before energy detection. In this paper, a novel cooperative energy spectrum sensing algorithm with 1-D or 2-D wavelet denoising is proposed. The 1-D wavelet denoising is performed at each sensing node, while...
This work presents an underground coal mine channel model for the broadband characterization of low-voltage power lines. The model is characterized by taking into account both measured and geometrical channel characteristics and can easily be used to take into account also the presence of noise. The channel is described by a conventional multipath characteristics model and a two-port equivalent described...
Power line communication (PLC) is one of the most attractive communication methods for in-home networks. However, the emissions of unwanted electric waves from PLC system, noise, inter-symbol interference (ISI) and inter-channel interference (ICI) cause harmful interference to communication systems. This paper discusses the characteristics of underground coal mine (UCM) power line communications (PLCs)...
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