Minimizing energy for wireless web access with bounded slowdown
Proceedings of the 8th annual international conference on Mobile computing and networking
Wake on wireless: an event driven energy saving strategy for battery operated devices
Proceedings of the 8th annual international conference on Mobile computing and networking
Dynamic Voltage Scaling with Links for Power Optimization of Interconnection Networks
HPCA '03 Proceedings of the 9th International Symposium on High-Performance Computer Architecture
Self-tuning wireless network power management
Proceedings of the 9th annual international conference on Mobile computing and networking
Power reduction by varying sampling rate
ISLPED '05 Proceedings of the 2005 international symposium on Low power electronics and design
Context-for-wireless: context-sensitive energy-efficient wireless data transfer
Proceedings of the 5th international conference on Mobile systems, applications and services
Wireless wakeups revisited: energy management for voip over wi-fi smartphones
Proceedings of the 5th international conference on Mobile systems, applications and services
Scheduling for reduced CPU energy
OSDI '94 Proceedings of the 1st USENIX conference on Operating Systems Design and Implementation
Automating cross-layer diagnosis of enterprise wireless networks
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Micro power management of active 802.11 interfaces
Proceedings of the 6th international conference on Mobile systems, applications, and services
A case for adapting channel width in wireless networks
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
BreadCrumbs: forecasting mobile connectivity
Proceedings of the 14th ACM international conference on Mobile computing and networking
Blue-Fi: enhancing Wi-Fi performance using bluetooth signals
Proceedings of the 7th international conference on Mobile systems, applications, and services
Sora: high performance software radio using general purpose multi-core processors
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
Softspeak: making VoIP play well in existing 802.11 deployments
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
On the fidelity of 802.11 packet traces
PAM'08 Proceedings of the 9th international conference on Passive and active network measurement
NAPman: network-assisted power management for wifi devices
Proceedings of the 8th international conference on Mobile systems, applications, and services
Catnap: exploiting high bandwidth wireless interfaces to save energy for mobile devices
Proceedings of the 8th international conference on Mobile systems, applications, and services
Beyond Nyquist: efficient sampling of sparse bandlimited signals
IEEE Transactions on Information Theory
Demystifying 802.11n power consumption
HotPower'10 Proceedings of the 2010 international conference on Power aware computing and systems
Avoiding the rush hours: WiFi energy management via traffic isolation
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
SiFi: exploiting VoIP silence for WiFi energy savings insmart phones
Proceedings of the 13th international conference on Ubiquitous computing
E-MiLi: energy-minimizing idle listening in wireless networks
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
Where is the energy spent inside my app?: fine grained energy accounting on smartphones with Eprof
Proceedings of the 7th ACM european conference on Computer Systems
Empowering developers to estimate app energy consumption
Proceedings of the 18th annual international conference on Mobile computing and networking
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As manufacturers continue to improve the energy efficiency of battery-powered wireless devices, WiFi has become one of--if not the--most significant power draws. Hence, modern devices fastidiously manage their radios, shifting into low-power listening or sleep states whenever possible. The fundamental limitation with this approach, however, is that the radio is incapable of transmitting or receiving unless it is fully powered. Unfortunately, applications found on today's wireless devices often require frequent access to the channel. We observe, however, that many of these same applications have relatively low bandwidth requirements. Leveraging the inherent sparsity in Direct Sequence Spread Spectrum (DSSS) modulation, we propose a transceiver design based on compressive sensing that allows WiFi devices to operate their radios at lower clock rates when receiving and transmitting at low bit rates, thus consuming less power. We have implemented our 802.11b-based design in a software radio platform, and show that it seamlessly interacts with existing WiFi deployments. Our prototype remains fully functional when the clock rate is reduced by a factor of five, potentially reducing power consumption by over 30%.