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398
Fast Incremental Maintenance of Approximate Histograms
, 1997
"... Many commercial database systems maintain histograms to summarize the contents of large relations and permit efficient estimation of query result sizes for use in query optimizers. Delaying the propagation of database updates to the histogram often introduces errors in the estimation. This paper pre ..."
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Cited by 183 (19 self)
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Many commercial database systems maintain histograms to summarize the contents of large relations and permit efficient estimation of query result sizes for use in query optimizers. Delaying the propagation of database updates to the histogram often introduces errors in the estimation. This paper
A Configurable Quantized Compressed Sensing Architecture for Low-power Tele-Monitoring
"... Abstract—Energy efficiency is one of the most concerns in tele-monitoring. As the rapid development of mobile technolo-gy, wireless communication has gradually become the biggest energy sector in most tele-monitoring applications. Recently, Compressed Sensing (CS) has attracted increasingly attentio ..."
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Cited by 1 (1 self)
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attention to solve this problem due to its extremely low sampling rate. In this paper, we investigate the quantization effect in the Compressed Sensing architecture. We point out that quanti-zation configuration is a critical factor towards the energy efficiency concern of the entire CS architecture
Robust Low-Power Algorithm for Random Sensing Matrix for Wireless ECG Systems Based on Low Sampling-Rate Approach
, 2013
"... The main drawback of current ECG systems is the location-specific nature of the systems due to the use of fixed/wired applications. That is why there is a critical need to improve the current ECG systems to achieve extended patient’s mo-bility and to cover security handling. With this in mind, Compr ..."
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, Compressed Sensing (CS) procedure and the collaboration of Sensing Matrix Selection (SMS) approach are used to provide a robust ultra-low-power approach for normal and ab-normal ECG signals. Our simulation results based on two proposed algorithms illustrate 25 % decrease in sampling-rate and a good level
Focal-Plane Change Triggered Video Compression for Low-Power Vision Sensor Systems
, 2009
"... Video sensors with embedded compression offer significant energy savings in transmission but incur energy losses in the complexity of the encoder. Energy efficient video compression architectures for CMOS image sensors with focal-plane change detection are presented and analyzed. The compression arc ..."
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Video sensors with embedded compression offer significant energy savings in transmission but incur energy losses in the complexity of the encoder. Energy efficient video compression architectures for CMOS image sensors with focal-plane change detection are presented and analyzed. The compression
ISRN SICS-D--56--SE Improving Low-Power Wireless Protocols with Timing-Accurate Simulation
, 2011
"... I first thank my thesis advisors Thiemo Voigt and Adam Dunkels for being my excellent advisors, and also for being the great colleagues you still are. Thiemo and Adam have complemented each other superbly, giving me feedback, perspectives, insights, and having made every single new venture truly fun ..."
On Modeling Low-Power Wireless Protocols Based on Synchronous Packet Transmissions
"... Abstract—Mathematical models play a pivotal role in understanding and designing advanced low-power wireless systems. However, the distributed and uncoordinated operation of traditional multi-hop low-power wireless protocols greatly complicates their accurate modeling. This is mainly because these pr ..."
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Abstract—Mathematical models play a pivotal role in understanding and designing advanced low-power wireless systems. However, the distributed and uncoordinated operation of traditional multi-hop low-power wireless protocols greatly complicates their accurate modeling. This is mainly because
Abstract Multichannel Communication in Contiki's Low-power IPv6 Stack
"... Vast majority of wireless appliances used in household, industry and medical field share the ISM frequency band. These devices need to coexist and thus are challenged to tolerate their mutual interference. One way of dealing with this is by using frequency hopping; where the device changes its radio ..."
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is used. We introduce a low-power pseudo-random frequency-hopping MAC protocol which is specifically characterized as a duty cycled asynchronous sender-initiated LPL style protocol. We illustrate two flavors of the protocol; one that does not use any dedicated channel and another which allows dedicated
2 Compact and Low-Power Computational 3D Sensors for Gestural Input
, 2014
"... Mobile devices have evolved into powerful computing platforms. As computing capabilities grow and size shrinks, the most pronounced limitation with mobile devices is display size. With the adoption of touch as the de facto input, the mobile screen doubles as a display and an input device. Touchscree ..."
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Cited by 1 (0 self)
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a real-time system for doing so as a culmination of an exploration of novel methods for 3D capture. First, two related systems for 3D imaging are presented, both relying on modeling and algorithms from parametric sampling theory and compressed sensing. Then, a separate system for 3D localization
A Biomimetic Adaptive Algorithm and Low-Power Architecture for Implantable Neural Decoders
"... Abstract—Algorithmically and energetically efficient computational architectures that operate in real time are essential for clinically useful neural prosthetic devices. Such devices decode raw neural data to obtain direct control signals for external devices. They can also perform data compression ..."
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Abstract—Algorithmically and energetically efficient computational architectures that operate in real time are essential for clinically useful neural prosthetic devices. Such devices decode raw neural data to obtain direct control signals for external devices. They can also perform data compression
COMPRESSIVE SAMPLING FOR REMOTE CONTROL SYSTEMS
"... Abstract. In remote control, efficient compression or representation of control signals is essential to send them through rate-limited channels. For this purpose, we propose an approach of sparse control signal representation using the compressive sampling technique. The problem of obtaining sparse ..."
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Cited by 5 (4 self)
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Abstract. In remote control, efficient compression or representation of control signals is essential to send them through rate-limited channels. For this purpose, we propose an approach of sparse control signal representation using the compressive sampling technique. The problem of obtaining sparse
Results 1 - 10
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398