Ulrich Appel

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An "event-synchronous interference canceller" (ESC) for cancellation of electrocardiographic (ECG) interference in diaphragmatic electromyographic (EMGdi) signals is addressed in this paper. ESC pursues the concept of the "event synchronous adaptive interference canceller" (ESAIC), which was proposed in [1] as a specific application of the well known(More)
We addressed the effect of post-transplant lymphoproliferative disorder (PTLD) treatment with rituximab monotherapy or CHOP-based chemotherapy (+/- rituximab) after upfront immunosuppression reduction (IR) on renal graft function in a longitudinal analysis of 58 renal transplant recipients with PTLD and 610 renal transplant controls. Changes in the(More)
Accurate onset detection of the voluntary response is a prerequisite in reaction time studies when used in investigations on human motor control. The detection algorithm required performs a transformation of the continuous physical signal (e.g., force, movement) containing the response into a discrete event from which the reaction time (RT) is derived.(More)
yost recursive adaptive lattice—filter algorithms use (IIR) exponential weighting of the signal elements necessary to calculate the filter parameters. In this paper, recursive algorithms for finite window (FIR) weighting are derived instead and applied to the parameter estimation vrocess. Adaptation and steady state performance of adaptive lattice filters(More)
It is well known that conventional design techniques of filter banks lose their ability to guarantee the perfect reconstruction condition when additive noise disturbs the subband sequences. The alternative synthesis scheme compensates the effects of the subband noise by estimating the transmitted samples minimizing the reconstruction mean squarred error,(More)