A New Coexistence Scenario for UWB Technologies

摘要

After assignment of a specific spectrum bandwidth to ultra wideband (UWB) communications by FCC, the research on the coexistence of UWB and narrowband (NB) wireless technologies has recently started to receive significant attention. Wireless local area networks (WLANs), world interoperability for microwave access (WiMAX), and wireless personal area networks (WPANs) are currently deployed in the same unlicensed radio fre­quency bands. In these bands, within and between some of these systems, interference is a major issue. In this paper, we compare the performance of WiMAX, WLAN and multiband orthogonal frequency division multiplexing (MB-OFDM) technologies in the presence of binary phase shift keying time-hopping (BPSK-TH) UWB and BPSK direct sequence (DS) UWB interference. Nakagami-m distribution is considered as the fading channel model. In the bit error rate (BER) analysis, it is considered that there are multiple UWB interfere™ affecting the OFDM-based signals. The BER performance is evaluated and compared for different coexistence scenarios.