Millimetre wave (mmWave) beam tracking is a challenging task because algorithms are required to provide consistent high accuracy with low probability of loss track and minimal overhead. To meet these requirements, we propose in this article new cost-effective analog framework namely Adaptive Tracking Stochastic Control (ATSC). Under framework, direction updates made using novel mechanism based ...

Increasing demand for higher data rate in mobile communications has recently attracted interest in high frequency communications above 10 GHz, known as millimeter wave (mmW) communications. Challenged by the high path loss, the use of antenna arrays are mandatory. The resulting directional deafness has to be met by effective beam alignment algorithms. In order to keep costs and complexity in ac...

The Global System for Mobile Communications (GSM) is widely recognized as the modern digital mobile network architecture. Increasing market demands point toward the relevancy of security-related issues in communications. The security requirements of mobile communications for the mobile users include: (1) the authentication of the mobile user and Visitor Location Register/Home Location Register;...

In this paper, we designed and implemented an internal multi-band folded monopole antenna for mobile handset. The proposed antenna covers Global System for Mobile Communications (GSM900: 880~960 MHz), Digital Communications System (DCS: 1710~1880 MHz), USPersonal Communications Service (US-PCS: 1850~1990 MHz), Bluetooth(2400~2484 MHz), WiMAX(3400~3600 MHz), and Wireless Local Area Network (WLAN...