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Power resources on the mobile device are always valuable, meanwhile there are 4.6 billion mobile-phone subscribers worldwide. The total amount of energy consumed and the carbon footprint on those mobile devices is considerable which implies developing tools for green applications to become ever more critical. However, there is currently no effective way for application developers to know the power...
In many DSP applications (image and voice processing, baseband symbol decoding in high quality communication channels) several dBs of SNR loss can be tolerated without noticeable impact on system level performance. For power optimization in such applications, voltage overscaling can be used to operate the arithmetic circuitry slower than the critical circuit path delay while incurring tolerable SNR...
In this paper, we present a new technique to improve the reliability of H-tree SRAM memories. This technique deals with the SRAM power-bus monitoring by using built-in current sensor (BICS) circuits that detect abnormal current dissipation in the memory power-bus. This abnormal current is the result of a single-event upset (SEU) in the memory and it is generated during the inversion of the state of...
A low power reconfigurable DCT architecture is proposed, which can be run at three transform precision levels for different demands. Using the character of energy distribution of the DCT matrix after 2D DCT operation, we selected the best DCT bases which achieve considerable power reduction in DCT operation with minimum image quality degradation. The reconfigurable architecture can achieve power saving...
In this presentation we overview the multi-discipline low power platform architecture and where improvements were made, we will show examples of low power innovations in process technology, microprocessor design, IO signaling and IO power delivery subsystems. We will show these innovations and techniques resulted in energy efficient mobile computing to the end user. We will end the presentation with...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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