UWB Interference Mitigation Techniques in a Cooperative Scenario

Detect and avoid procedures (DAA) improve Ultra-wideband (UWB) coexistence with existing narrowband/wideband victim systems operating in the same band, at the same time and area. In this paper we propose a DAA procedure that can be used to reduce the percentage of time the UWB interferes the victim devices which operate in accordance to a frequency division duplex (FDD) mode. A cooperative scenario is considered. Some UWB devices are integrated with the victim devices and can broadcast information on the status of the victim to other UWBs in the area. This information is used in the DAA to improve performance. The performance of the proposed DAA procedure are presented and discussed and their dependence on some key UWB transmission parameters, such as the bit rate and emitted power, are evidenced. It is shown that the DAA parameters can be selected so to arbitrarily reduce the average percentage of time the UWB interferes with the considered victim systems.