N. Engin

SAND: a modular application development platform for miniature wireless sensors

A modular application development platform for miniature wireless sensor/actuator devices called small autonomous network devices (SANDs) is described. As an application example a system power breakdown of a real-time ECG analysis is presented. The application development SANDs have a volume of about one cubic centimeter. Based upon testing and optimization the schematics and specifications are obtained for the mass-production SANDs. Utilizing system in package (SiP) technology the volume can be reduced up to five times. These devices can be used in a truly unnoticeable and unobtrusive way to serve as the smallest components of a personal health care monitoring system or an ambient intelligence system

Fast fault simulation for nonlinear analog circuits

A new method of transient fault simulation uses dc bias grouping of faulty circuits and decreases the number of Newton-Raphson iterations needed to reach a solution. An experimental tool implementing this method achieves a speedup of 20% to 30% on a flat netlist.

A turbo decoder architecture with scalable parallelism

A scalable, programmable turbo decoder architecture is presented in this paper. The starting point is a comparison of the existing techniques on the basis of scalability, area and power consumption. The results from these comparisons lead to a hybrid technique on which our architecture concept is based. The architecture consists of clusters, each of which is a VLIW architecture. The upsizing is possible by adding a cluster and dividing the two data memories into banks. The window size is chosen according to the number of banks, to prevent conflicts. At the end of the paper, a short evaluation of the architecture is presented.