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We investigate the problem of reducing the number of branch mispredictions for a task such that its WCET (Worst-Case Execution Time) is minimized, and propose a novel branch correlation-based, hybrid branch prediction approach. Our approach consists of a static profile-based branch correlation analyzer and a dynamic branch predictor. The static profile-based branch correlation analyzer uses profiling...
The expected appearance of a human face depends strongly on age, ethnicity and gender. While these relationships are well-studied, our work explores the little-studied dependence of facial appearance on geographic location. To support this effort, we constructed GeoFaces, a large dataset of geotagged face images. We examine the geo-dependence of Eigenfaces and use two supervised methods for extracting...
The number of sensors to use for cooperative sensing is a compromise between sensing performance and consumption of system resources. Firstly, the definition of optimal sensor set (OptSS) is given out. Then an optimal selecting method of OptSS is acquired. Lastly, a sub optimal adaptive selecting algorithm of OptSS based on greedy with a lower complexity is proposed, which not only obtains the near-optimal...
Ultrafast pulse generation and detection are pivotal functions in ultra-wideband (UWB) impulse radios. This paper shows that digitally-assisted distributed circuit techniques provide an energy-efficient, reconfigurable solution for both functions, as demonstrated in two new circuits: a pulse generator that can generate reconfigurable pulse waveforms with sub-nanosecond time resolution, and a multi-GHz...
This paper presents a low power impulse-radio ultra-wideband (IR-UWB) receiver based on a reconfigurable, high speed analog correlator called distributed pulse correlator (DPC). The DPC incorporates built-in local template pulse generation, and hence significantly reduces the power consumption and circuit complexity of the analog correlation receiver. A chip prototype of the IR-UWB receiver was implemented...
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