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Multiterminal Source Coding With Copula Regression for Wireless Sensor Networks Gathering Diverse Data
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zimos, Evangelos Toumpakaris, Dimitris Munteanu, Adrian Deligiannis, Nikos |
| Copyright Year | 2017 |
| Abstract | Efficient data compression at a low processing and communication cost is a key challenge in wireless sensor networks. In this paper, we propose a novel multiterminal source code design, which, contrary to prior work, utilizes both the intra- and the inter-sensor data dependences. The former is exploited by applying simple differential pulse-code modulation followed by arithmetic entropy coding at each distributed encoder. This approach limits the encoding complexity and provides for a flexible design that adapts to the variations in the number of operating sensors. Moreover, we propose a regression method applied at the joint decoder, which aims at leveraging the inter-sensor data dependences. Unlike existing work that focuses on homogeneous data types, the proposed method makes use of copula functions, namely, a statistical model that captures the dependence structure amongst heterogeneous data types. Experimentation using real sensor measurements-taken from the Intel-Berkeley database-shows that the proposed system achieves significant compression improvements compared with the state-of-the-art multiterminal and distributed source coding schemes. |
| Starting Page | 139 |
| Ending Page | 150 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.1109/jsen.2016.2585042 |
| Volume Number | 17 |
| Alternate Webpage(s) | https://cris.vub.be/files/26384200/MT_Source_Coding_with_Copula_Regression_for_Wireless_Sensor_Networks_Gathering_Diverse_Data.pdf |
| Alternate Webpage(s) | http://homepages.ulb.ac.be/~ndeligia/pubs/zimos2016.pdf |
| Alternate Webpage(s) | https://doi.org/10.1109/jsen.2016.2585042 |
| Journal | IEEE Sensors Journal |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
