Dynamic Single-rail Self-timed Logic Structures for Power Efficient Synchronous Pipelined Designs

The realization of fast datapaths in signal processing environments requires fastest, power efficient logic styles with synchronous behavior. This paper presents a method to combine improvements on algorithm and logic level. To reduce the power consumption of dynamic logic, a method for using single-rail structures is presented including a new scheme to realize inverting logic functions. It is shown that such structure is most efficient when redundant number systems are utilized. These self-timed logic is integrated in a global clock system using the Asynchronous Chain True Single Phase Clock (AC-TSPC) logic resulting in a latch-free structure. Comparisons with other logic styles show the achievement potential. First simulations for a horizontal redundant adder slice show area and power savings of 40% and 30% compared to complementary Domino logic

DCP: A New Data Collection Protocol for Bluetooth-Based Sensor Networks

Two economic factors are essential for the success of wireless sensor networks as new key technology: low-cost hardware and strong prototype applications. Although not perfect, Bluetooth can be a driving technology in this domain. We present a new Data Collection Protocol (DCP) for wireless sensor networks. DCP is tailored to Bluetooth-based sensor nodes and therefore enables sensor network applications based on inexpensive hardware. DCP is scalable, robust, and not limited to piconet or scatternet structures