Decentralized Detection in Wireless Sensor Networks with Channel Fading Statistics
<p/> <p>Existing channel aware signal processing design for decentralized detection in wireless sensor networks typically assumes the clairvoyant case, that is, global channel state information (CSI) is known at the design stage. In this paper, we consider the distributed detection probl...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2007-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Online Access: | http://jwcn.eurasipjournals.com/content/2007/062915 |
| _version_ | 1818759112985411584 |
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| author | Liu Bin Chen Biao |
| author_facet | Liu Bin Chen Biao |
| author_sort | Liu Bin |
| collection | DOAJ |
| description | <p/> <p>Existing channel aware signal processing design for decentralized detection in wireless sensor networks typically assumes the clairvoyant case, that is, global channel state information (CSI) is known at the design stage. In this paper, we consider the distributed detection problem where only the channel fading statistics, instead of the instantaneous CSI, are available to the designer. We investigate the design of local decision rules for the following two cases: (1) fusion center has access to the instantaneous CSI; (2) fusion center does not have access to the instantaneous CSI. As expected, in both cases, the optimal local decision rules that minimize the error probability at the fusion center amount to a likelihood ratio test (LRT). Numerical analysis reveals that the detection performance appears to be more sensitive to the knowledge of CSI at the fusion center. The proposed design framework that utilizes only partial channel knowledge will enable distributed design of a decentralized detection wireless sensor system.</p> |
| first_indexed | 2024-12-18T06:37:33Z |
| format | Article |
| id | doaj.art-32dbc71a487c44d190bd03c90375e2b9 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-18T06:37:33Z |
| publishDate | 2007-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-32dbc71a487c44d190bd03c90375e2b92022-12-21T21:17:45ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992007-01-0120071062915Decentralized Detection in Wireless Sensor Networks with Channel Fading StatisticsLiu BinChen Biao<p/> <p>Existing channel aware signal processing design for decentralized detection in wireless sensor networks typically assumes the clairvoyant case, that is, global channel state information (CSI) is known at the design stage. In this paper, we consider the distributed detection problem where only the channel fading statistics, instead of the instantaneous CSI, are available to the designer. We investigate the design of local decision rules for the following two cases: (1) fusion center has access to the instantaneous CSI; (2) fusion center does not have access to the instantaneous CSI. As expected, in both cases, the optimal local decision rules that minimize the error probability at the fusion center amount to a likelihood ratio test (LRT). Numerical analysis reveals that the detection performance appears to be more sensitive to the knowledge of CSI at the fusion center. The proposed design framework that utilizes only partial channel knowledge will enable distributed design of a decentralized detection wireless sensor system.</p>http://jwcn.eurasipjournals.com/content/2007/062915 |
| spellingShingle | Liu Bin Chen Biao Decentralized Detection in Wireless Sensor Networks with Channel Fading Statistics EURASIP Journal on Wireless Communications and Networking |
| title | Decentralized Detection in Wireless Sensor Networks with Channel Fading Statistics |
| title_full | Decentralized Detection in Wireless Sensor Networks with Channel Fading Statistics |
| title_fullStr | Decentralized Detection in Wireless Sensor Networks with Channel Fading Statistics |
| title_full_unstemmed | Decentralized Detection in Wireless Sensor Networks with Channel Fading Statistics |
| title_short | Decentralized Detection in Wireless Sensor Networks with Channel Fading Statistics |
| title_sort | decentralized detection in wireless sensor networks with channel fading statistics |
| url | http://jwcn.eurasipjournals.com/content/2007/062915 |
| work_keys_str_mv | AT liubin decentralizeddetectioninwirelesssensornetworkswithchannelfadingstatistics AT chenbiao decentralizeddetectioninwirelesssensornetworkswithchannelfadingstatistics |