Study of the Optically Based Gaussian Impulse for Ultra-Wideband Wireless System

• Main Authors: Jun-Yu Chen, 陳俊佑
• Other Authors: Wen-Piao Lin
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/84687502257454868644

碩士 === 長庚大學 === 電機工程研究所 === 93 === In recently Ultra-WideBand (UWB) wireless system has fixed everyone’s eyes in the field of wireless communication. Not only it provides high-data-rate in mobile communication, but also be applied in electrical fitting, which could be employed in communication and message delivered such as home-vedio-entertainment, digital TV, personal computer and personal-digital-assistant and so on. These devices can work together with the other original communication systems, just like a new favor in the field of wireless communication. In general UWB wireless system generates output pulses with electronic structure. But the electronic structure is not easy to generate so wide pulses. However the optical signal can provide a greatly wide bandwidth, the UWB pulses are easier to generate by the optical devices than to generate by the electronic devices. In this paper, we propose a new scheme to generate Gaussian monocycle pulse signals for UWB wireless systems, which is composed of a gain-switched Fabry-Perot laser diode, tunable filter, Er+3-doped fiber amplifier and a microwave differentiator. The generated impulse signal can provide several GHz bandwidths for the transmission of high-bit-rate data. The experimental and analytical results demonstrate that the proposed scheme can achieve a good Gaussian monocycle pulse trains for the applications of future high-bit-rate UWB wireless systems.