Optimum Integration Time for UWB Transmitted Reference and Energy Detector Receivers

Determining the optimum integration interval in transmitted reference (TR) and energy detector receivers in UWB radio is non-trivial. Recently a diffusion channel model was proposed for UWB indoor propagation channels. This paper shows that the choice of the optimum integration time that minimizes the error probability can be obtained from the diffusion model in a computationally inexpensive algorithm. The algorithm can be effectively implemented with analog devices to inform the receiver of the optimum stopping time, without precise information about the channel model parameters. By using the obtained optimum stopping time, superior performance is achieved with respect to a computationally extensive averaged/GLRT analysis.