e7 - Low Power Light-weight Embedded Systems* Majid...

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Unformatted text preview: Low Power Light-weight Embedded Systems* Majid Sarrafzadeh 1 , Foad Dabiri 1 , Roozbeh Jafari 2 , Tammara Massey 1 , Ani Nahapetan 1 Computer Science Department 1 University of California, Los Angeles {majid, dabiri, tmassey, ani}@cs.ucla.edu Electrical Eng. Dept. / University of Texas at Dallas 2 Electrical Eng. and Computer Sci. Dept. / UC Berkeley rjafari@utdallas.edu Abstract Light-weight embedded systems are now gaining more popularity due to the recent technological advances in fabrication that have resulted in more powerful tiny processors with greater communication capabilities that pose various scientific challenges for researchers. Perhaps the most significant challenge is the energy consumption concern and reliability , mainly due to the small size of batteries. In this tutorial, we portray a brief description of low-power, light-weight embedded systems, depict several power profiling studies previously conducted, and present several research challenges that require low-power consumption in embedded systems. For each challenge, we highlight how low- power designs may enhance the overall performance of the system. Finally, we present a several techniques that minimize the power consumption in such systems. Categories and Subject Descriptors B.8.2 [ Performance and Reliability ]: Performance Analysis and Design Aids; C.3 [ Special-purpose and Application-based Systems ]: Real-time and embedded systems General Terms Design, Performance Keywords Light-weight embedded systems, sensor networks, power optimization 1. Introduction Light-weight embedded systems, recently introduced due to the advancement of fabrication of powerful tiny processors, have the ability to revolutionize capture, processing and actuation in several collaborative and networked systems. The new class of tiny embedded systems has been widely utilized in several domains from medical monitoring applications [1][2] to collaborative object tracking systems [3]. Many systems similar to the aforementioned applications require low-profile, mobile and cost-effective devices. The physical size and the cost- effectiveness immediately deduce several constraints in processing power and communication bandwidth. In addition, it enforces restriction on the size of batteries. These unique limitations require rethinking and reinventing the design process in particularly light-weight embedded systems. Predominantly, power issues become a major concern in the design phase due to the unique properties of such systems. Optimization of power consumption in light-weight embedded systems is no longer just an objective function that is to be minimized. Power optimization is a tight constraint that must be accommodated to deliver a practical system....
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e7 - Low Power Light-weight Embedded Systems* Majid...

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