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A three-dimensional (3-D) geometrical propagation model that includes both stationary and moving scatterers around the transmitter and receiver for wideband vehicle-to-vehicle (V-to-V) communications is proposed. Based on the geometrical model, a 3-D reference model for wideband multiple-input multiple-output (MIMO) V-to-V multipath fading channels is developed. From the reference model, the corresponding...
This paper shows that electromagnetic (EM) information leakage from modern laptops and desktops (with no peripherals attached) is indeed possible and is relatively easy to achieve. The experiments are performed on three laptop systems and one desktop system with different processors (Intel Centrino, Core 2, Core i7, and AMD Turion), and show that both active (program deliberately tries to cause emanations...
As the number of cores on a single-chip grows, scalable barrier synchronization becomes increasingly difficult to implement. In software implementations, such as the tournament barrier, a larger number of cores results in a longer latency for each round and a larger number of rounds. Hardware barrier implementations require significant dedicated wiring, e.g., using a reduction (arrival) tree and a...
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