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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Riemensberger, M. Sagduyu, Y.E. Honig, M.L. Utschick, W. |
| Copyright Year | 2008 |
| Description | Author affiliation: Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL (Sagduyu, Y.E.; Honig, M.L.) || Associate Inst. for Signal Process., Munich Univ. of Technol., Munich (Riemensberger, M.; Utschick, W.) |
| Abstract | We consider multicast communications from a single source to multiple destinations over a network of erasure channels. Linear network coding maximizes the achievable (min-cut) rate, and a distributed code assignment can be realized by choosing codes randomly at the intermediate nodes. It is typically assumed that the coding information (combining coefficients) at each node is included in the packet overhead, and forwarded to the destination. Instead, we assume that the network coding matrix is communicated to the destinations by appending training bits to the data bits at the source. End-to-end channel coding can then be applied to the training and data either separately, or jointly, by coding across both training and information bits. Ideally, the training overhead should balance the reliability of communicating the network matrix with the reliability of data detection. We maximize data throughput as a function of the training overhead, and show how it depends on the network size, erasure probability, number of independent messages, and field size. The combination network is used to illustrate our results, and shows under what conditions throughput is limited by training overhead. |
| Starting Page | 1 |
| Ending Page | 7 |
| File Size | 134678 |
| Page Count | 7 |
| File Format | |
| ISBN | 9781424426768 |
| DOI | 10.1109/MILCOM.2008.4753084 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-11-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Decoding Network coding Telecommunication network reliability Routing Network topology Wireless networks Channel coding Multicast communication Throughput Signal processing |
| Content Type | Text |
| Resource Type | Article |
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