DU Juan^1,2,3,, LU Xiao-chun^1,2, BAI Yan^1,2,3

(1. National Time Service Centre, Chinese Academy of Sciences, Xi′an 710600, China;

2. Key Laboratory of Precision Navigation and Timing Technology, National Time Service Center,

Chinese Academy of Sciences, Xi′an 710600, China;

3. Graduate University of Chinese Academy of Sciences, Beijing 100039, China)

Abstract: The UWB(ultra wide band) technology is a new technology with revolutionary significance in the short-range wireless communication field. In this paper, the design theory and structure of the UWB wireless communication system based on widely applied OFDM(orthogonal frequency-division multiplexing) are analyzed, the method of producing MB-OFDM-UWB signal is expounded systematically, and the signal is simulated. The analyses lay a foundation for the application of OFDM-UWB signal in the actual communication system.