Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket Reception
<p/> <p>We investigate two important aspects in sensor network design—the throughput and the energy efficiency. We consider the uplink reachback problem where the receiver is equipped with multiple antennas and linear multiuser detectors. We first assume Rayleigh flat-fading, a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2005-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Subjects: | |
| Online Access: | http://jwcn.eurasipjournals.com/content/2005/670575 |
| _version_ | 1819100631247355904 |
|---|---|
| author | Li Wenjun Dai Huaiyu |
| author_facet | Li Wenjun Dai Huaiyu |
| author_sort | Li Wenjun |
| collection | DOAJ |
| description | <p/> <p>We investigate two important aspects in sensor network design—the throughput and the energy efficiency. We consider the uplink reachback problem where the receiver is equipped with multiple antennas and linear multiuser detectors. We first assume Rayleigh flat-fading, and analyze two MAC schemes: round-robin and slotted-ALOHA. We optimize the average number of transmissions per slot and the transmission power for two purposes: maximizing the throughput, or minimizing the effective energy (defined as the average energy consumption per successfully received packet) subject to a throughput constraint. For each MAC scheme with a given linear detector, we derive the maximum asymptotic throughput as the signal-to-noise ratio goes to infinity. It is shown that the minimum effective energy grows rapidly as the throughput constraint approaches the maximum asymptotic throughput. By comparing the optimal performance of different MAC schemes equipped with different detectors, we draw important tradeoffs involved in the sensor network design. Finally, we show that multiuser scheduling greatly enhances system performance in a shadow fading environment.</p> |
| first_indexed | 2024-12-22T01:05:50Z |
| format | Article |
| id | doaj.art-e5323e1503bf4bf3be1ce473872d86c9 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-22T01:05:50Z |
| publishDate | 2005-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-e5323e1503bf4bf3be1ce473872d86c92022-12-21T18:44:06ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992005-01-0120054670575Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket ReceptionLi WenjunDai Huaiyu<p/> <p>We investigate two important aspects in sensor network design—the throughput and the energy efficiency. We consider the uplink reachback problem where the receiver is equipped with multiple antennas and linear multiuser detectors. We first assume Rayleigh flat-fading, and analyze two MAC schemes: round-robin and slotted-ALOHA. We optimize the average number of transmissions per slot and the transmission power for two purposes: maximizing the throughput, or minimizing the effective energy (defined as the average energy consumption per successfully received packet) subject to a throughput constraint. For each MAC scheme with a given linear detector, we derive the maximum asymptotic throughput as the signal-to-noise ratio goes to infinity. It is shown that the minimum effective energy grows rapidly as the throughput constraint approaches the maximum asymptotic throughput. By comparing the optimal performance of different MAC schemes equipped with different detectors, we draw important tradeoffs involved in the sensor network design. Finally, we show that multiuser scheduling greatly enhances system performance in a shadow fading environment.</p>http://jwcn.eurasipjournals.com/content/2005/670575throughputenergy efficiencymultiuser diversityschedulingslotted-ALOHAlinear multiuser detector |
| spellingShingle | Li Wenjun Dai Huaiyu Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket Reception EURASIP Journal on Wireless Communications and Networking throughput energy efficiency multiuser diversity scheduling slotted-ALOHA linear multiuser detector |
| title | Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket Reception |
| title_full | Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket Reception |
| title_fullStr | Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket Reception |
| title_full_unstemmed | Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket Reception |
| title_short | Optimal Throughput and Energy Efficiency for Wireless Sensor Networks: Multiple Access and Multipacket Reception |
| title_sort | optimal throughput and energy efficiency for wireless sensor networks multiple access and multipacket reception |
| topic | throughput energy efficiency multiuser diversity scheduling slotted-ALOHA linear multiuser detector |
| url | http://jwcn.eurasipjournals.com/content/2005/670575 |
| work_keys_str_mv | AT liwenjun optimalthroughputandenergyefficiencyforwirelesssensornetworksmultipleaccessandmultipacketreception AT daihuaiyu optimalthroughputandenergyefficiencyforwirelesssensornetworksmultipleaccessandmultipacketreception |