Coexistence of Transmitted-Reference UWB System and IEEE 802.11a WLAN

Transmitted-reference (TR) ultra-wideband (UWB) systems can relax the difficult synchronization requirements and can provide a simple receiver architecture that gathers the energy from many resolvable multipath components. However, TR-UWB systems are susceptible to interference which comes from other wireless systems. In this paper, TR-UWB system performance is studied in the presence of strong IEEE 802.11a WLAN interference. In order to reduce both the effects of interference by and into UWB signals, we propose a new method in conjunction with a multi-carrier type transmission pulse. The results show performance improvement in the presence of strong IEEE 802.11a interference. The proposed method can be used for the coexistence of different wireless systems with UWB system