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Cognitive radio (CR) techniques promise to significantly increase the available spectrum thus wireless bandwidth. With the increase of spectrum allowed for CR, it is critical and challenging to perform efficient wideband sensing. We propose an integrated sequential wideband sensing framework which concurrently exploits sequential detection and compressed sensing (CS) techniques for more accurate and...
This paper investigates the sensing order problem for multi-user and multi-channel cognitive radio networks. While most of the literature studies focus on the sensing order for a single user, we consider the scenario in which multiple secondary users sequentially sense and access the channel according to their individual sensing orders. In multi-user case, channel access collisions among secondary...
This paper is concerned with the problem of capturing higher dynamic range video with a mobile device. We assume the mobile device has a standard (or low) dynamic range image sensor, and that the device is constrained by power and processing capability. To address these issues, we develop a system that captures a video sequence containing time varying exposure settings, encodes this sequence without...
This paper describes a simulator which is used to study the motion plan of search and rescue robot on bumpy road. The simulator, written in C++, is composed of Newton physics engine system and OGRE based 3D environment. All libraries used are free and the program can be compiled cross-platforms. Virtual sensors such as camera and motor coded disc are developed. Behavior-based programming interface...
Love wave sensors employing guiding layer deposited on a ST-90degX quartz were presented and analyzed. Since solidified SU-8, as one kind of polymer, has low shear velocity, while its rigidness is almost same with SiO2, So SU-8 is very appreciated for Love wave sensor layer. Firstly, as for the two layers structure (SU-8/ ST90degX -quartz), the Love wave phase velocity was calculated by propagation...
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