Transmission Power Management for IR-UWB WSN Based on Node Population Density

We propose a method to manage transmission power in nodes belonging to a wireless sensor network (WSN). The scenario contemplates uncoordinated communications using impulse radio ultra wideband (IR-UWB). Transmission power is controlled according to the statistical nature of the multiple access interference (MAI) produced by the nodes in the close vicinity of the communicating nodes. The statistical nature of the MAI is a function of the node population density within the area of coverage of the WSN. We show that when the node population density is high enough transmission power savings are possible.