Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC Codes
<p/> <p>Network coding allows to exploit spatial diversity naturally present in mobile wireless networks and can be seen as an example of cooperative communication at the link layer and above. Such promising technique needs to rely on a suitable physical layer in order to achieve its bes...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2010-01-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Online Access: | http://jwcn.eurasipjournals.com/content/2010/517921 |
| _version_ | 1818981613912981504 |
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| author | Cocco Giuseppe Pfletschinger Stephan Navarro Monica Ibars Christian |
| author_facet | Cocco Giuseppe Pfletschinger Stephan Navarro Monica Ibars Christian |
| author_sort | Cocco Giuseppe |
| collection | DOAJ |
| description | <p/> <p>Network coding allows to exploit spatial diversity naturally present in mobile wireless networks and can be seen as an example of cooperative communication at the link layer and above. Such promising technique needs to rely on a suitable physical layer in order to achieve its best performance. In this paper, we present an opportunistic packet scheduling method based on physical layer considerations. We extend channel adaptation proposed for the broadcast phase of asymmetric two-way bidirectional relaying to a generic number <inline-formula> <graphic file="1687-1499-2010-517921-i1.gif"/></inline-formula> of sinks and apply it to a network context. The method consists of adapting the information rate for each receiving node according to its channel status and independently of the other nodes. In this way, a higher network throughput can be achieved at the expense of a slightly higher complexity at the transmitter. This configuration allows to perform rate adaptation while fully preserving the benefits of channel and network coding. We carry out an information theoretical analysis of such approach and of that typically used in network coding. Numerical results based on nonbinary LDPC codes confirm the effectiveness of our approach with respect to previously proposed opportunistic scheduling techniques.</p> |
| first_indexed | 2024-12-20T17:34:07Z |
| format | Article |
| id | doaj.art-a03326e2b37d49d7b8fccbd2f4fc5c30 |
| institution | Directory Open Access Journal |
| issn | 1687-1472 1687-1499 |
| language | English |
| last_indexed | 2024-12-20T17:34:07Z |
| publishDate | 2010-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-a03326e2b37d49d7b8fccbd2f4fc5c302022-12-21T19:31:15ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14721687-14992010-01-0120101517921Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC CodesCocco GiuseppePfletschinger StephanNavarro MonicaIbars Christian<p/> <p>Network coding allows to exploit spatial diversity naturally present in mobile wireless networks and can be seen as an example of cooperative communication at the link layer and above. Such promising technique needs to rely on a suitable physical layer in order to achieve its best performance. In this paper, we present an opportunistic packet scheduling method based on physical layer considerations. We extend channel adaptation proposed for the broadcast phase of asymmetric two-way bidirectional relaying to a generic number <inline-formula> <graphic file="1687-1499-2010-517921-i1.gif"/></inline-formula> of sinks and apply it to a network context. The method consists of adapting the information rate for each receiving node according to its channel status and independently of the other nodes. In this way, a higher network throughput can be achieved at the expense of a slightly higher complexity at the transmitter. This configuration allows to perform rate adaptation while fully preserving the benefits of channel and network coding. We carry out an information theoretical analysis of such approach and of that typically used in network coding. Numerical results based on nonbinary LDPC codes confirm the effectiveness of our approach with respect to previously proposed opportunistic scheduling techniques.</p>http://jwcn.eurasipjournals.com/content/2010/517921 |
| spellingShingle | Cocco Giuseppe Pfletschinger Stephan Navarro Monica Ibars Christian Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC Codes EURASIP Journal on Wireless Communications and Networking |
| title | Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC Codes |
| title_full | Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC Codes |
| title_fullStr | Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC Codes |
| title_full_unstemmed | Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC Codes |
| title_short | Opportunistic Adaptive Transmission for Network Coding Using Nonbinary LDPC Codes |
| title_sort | opportunistic adaptive transmission for network coding using nonbinary ldpc codes |
| url | http://jwcn.eurasipjournals.com/content/2010/517921 |
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