2004•The Journal of Korean Institute of Electromagnetic Engineering and ScienceRequires access

Analysis and Measurement of Interferences between UWB and Mobile Communication System

Myung-Jong Kim, Hyungsoo Lee, Hong Ic-Pyo, Shin Yong-Sup

Abstract

Ultra Wideband(UWB) technologies have been developed to exploit a new spectrum resource in substances and to realize ultra-high-speed communication, high precision geolocation, and other applications. The energy of UWB signal is extremely spread from near DC to a few GHz. This means that the interference between conventional narrowband systems and UWB systems is inevitable. However, the interference effects had not previously been studied from UWB wireless systems to conventional mobile wireless systems sharing the frequency bands such as Korean Cellular CDMA and WCDMA. This paper experimentally evaluates the interference from two kinds of UWB sources, namely a direct-sequence spread-spectrum CDMA(DS-CDMA) UWB source and an impulse radio UWB source, to a Cellular CDMA and WCDMA digital transmission system. The average frame error rate degradation of each system are presented. From these experimental results, the interference effects of DS-CDMA UWB source is not severe compared to the Impulse UWB.

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Key concepts: Electronic engineering, Code division multiple access, Computer science, Ultra-wideband, Wireless, Spread spectrum, Multipath propagation, Interference (communication)