Interference DAA Technique for Coexisting UWB Radio

Ultra Wideband (UWB) is an attractive technique that enable coexistence with other radio systems to spread spectrum. However, there are potential interferences among those using the same frequency bands and close range. In some country regulations, the interference DAA (detect and avoidance) techniques are required to utilize UWB devices. This paper discusses the interference DAA technique. To utilize multi-carrier pulses made from several narrower sub-band pulses, that is possible to detect and mitigate the interference. The multi-carrier pulses are also suited for the transmitted pulse waveform, since they have advantages for adaptive wave forming. The proposal system is evaluated by the bit error rate performance and signal detection error rate to show their effectiveness. The WiMAX (world interoperability for microwave access) system is considered as an example of the interferer.