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In this paper, different energy combining schemes for non-coherent UWB impulse radio systems are analysed. Closed form expressions for the Symbol Error Rate (SER) of Pulse Amplitude Modulation (PAM) using a non-coherent energy detection receiver with energy combining in the AWGN and fading channels are presented. The principle of energy combining is based on the fact that the symbol energy is combined...
The main manifestations of artifacts and their causes in cone-beam computed tomography (CBCT) system were studied, and then the general CBCT digital radiography (DR) imaging model was described with a mathematical expression. On this basis, a new expression of DR imaging model was proposed according to the actual imaging noise and enforceability of corrective action, and so the projection image was...
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