Performance of UWB Systems using a Temporal Detect-and-Avoid Mechanism
AuthorsThomas Zasowski and Armin Wittneben
ReferenceIEEE International Conference on Ultra-Wideband, ICUWB 2006, Waltham, Massachusetts, USA, Sept. 2006.
AbstractAccording to the draft versions of the European and Japanese regulation authorities UWB systems have to use detect and avoid (DAA) mechanisms to avoid interference with existing wireless services. Since most existing wireless services such as GSM, WLAN, and Bluetooth transmit their data burstwise we propose UWB transmission between adjacent bursts of such systems. Thus, not only interference from UWB systems is avoided but also interference to them. We refer to this kind of DAA mechanism as temporal DAA. Since the time of UWB transmission is reduced with such an approach we investigate the performance of UWB systems using temporal DAA. Based on time domain measurements of different interference scenarios we show that with UWB still reasonable data rates are achieved and strict latency time requirements can be met.
KeywordsTemporal cognitive medium access, Detect-and-avoid, MAC, DAA, Interference, UWB
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