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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Halawani, Y. Mohammad, B. Al-Qutayri, M. Saleh, H. |
| Copyright Year | 2015 |
| Description | Author affiliation: Dept. of Electr. & Comput. Eng., Khalifa Univ., Abu Dhabi, United Arab Emirates (Halawani, Y.; Mohammad, B.; Al-Qutayri, M.; Saleh, H.) |
| Abstract | The increase in demand for higher functionality, smaller size, lower cost and near perpetual operation of Wireless Sensor Nodes (WSNs) are posing big challenges for system designers. A major aspect is the operational lifetime of the system which is determined by the finite energy source supplied by the battery. In WSNs, the higher power incurred due to added system functionality and the increase leakage as a result of technology scaling have high impact on the battery lifetime. In this work, memory was used to further exploit the energy efficiency at the sensor node system-level. A detailed analysis using Semi-Markov model to investigate different operational modes of WSN with the present SRAM shows an improvement of 4x at 90% duty cycle in the node's lifetime. In addition, an emerging non-volatile memory (NVM) technology, Memristor, is also explored to further improve the WSN energy efficiency. Its non-volatility nature will suppress the power wasted as leakage in SRAM during idle periods which is typical for low duty-cycle WSNs. The results show that utilizing an on-chip NVM can further improve WSN lifetime by 1x for low activity μW range sensor nodes. |
| Starting Page | 1470 |
| Ending Page | 1473 |
| File Size | 327451 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479983919 |
| DOI | 10.1109/ISCAS.2015.7168922 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-05-24 |
| Publisher Place | Portugal |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Wireless sensor networks Mathematical model Power demand Nonvolatile memory Computational modeling Memristors Batteries wireless sensor node Memory local data storage low-power Semi-Markov |
| Content Type | Text |
| Resource Type | Article |
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