Improvement of Ultra-Wideband Link Performance Over Bands Requiring Interference Mitigation in Korea

Ultra-WideBand (UWB) systems have witnessed a debate over whether they may cause interference to other existing and future narrowband systems sharing their band of operation. The Detect And Avoid (DAA) mechanism was developed as a solution to reduce interference to narrowband systems in order to ease regulatory concerns. It works by adaptively reducing the transmitted power at the overlapping bands upon detecting an active narrowband link. However, employing DAA degrades the performance of UWB transmissions. In this paper, the authors present the Korean UWB regulations as an example of regulations that require DAA in certain bands.