Abstract: In cognitive radio, most spatial spectrum sensing algorithms ignore the characteristic of the noncircular (NC) signals that are common in modern communication systems. In this letter, we ...

Using a relatively young theory, a team of mathematicians has started to answer questions whose roots lie at the very beginning of mathematics.

For Mr. Santos, math can also inspire ideas about structures that have already been built — a new way to see and appreciate the world. Inspired by this idea, The New York Times created a virtual tour ...

Department of Bridge Engineering, School of Transportation, Southeast University, Nanjing 210096, P. R. China Advanced Ocean Institute of Southeast University, Nantong 226010, P. R. China ...

Abstract: Angle measuring accuracy is the important technique index of the measuring angle device with CCD. The calibration methods for CCD camera have some disadvantages, such as the high ...