Abstract
We consider the application of wireless network coding to a "butterfly" wireless network, comprising two sources and two destinations sharing a single relay. We obtain upper bounds on the end to end capacity of the network in terms of the codebook cardinalities, allowing the use of an extended rather than a minimal hierarchical mapping at the relay and assuming that partial complementary side information is available at each destination directly from its complementary source. We further show that this bound may be achieved using a linear mapping at the relay. We obtain numerical results for the mutual information on the links of the network, and hence show that the extended mapping may provide increased capacity compared to the minimal for some values of channel fading parameters.
| Original language | English |
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| Pages | 240-246 |
| Number of pages | 7 |
| Publication status | Published - 2011 |
| Event | 17th European Wireless Conference 2011, EW 2011 - Vienna, Austria Duration: 27 Apr 2011 → 29 Apr 2011 |
Conference
| Conference | 17th European Wireless Conference 2011, EW 2011 |
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| Country/Territory | Austria |
| City | Vienna |
| Period | 27/04/11 → 29/04/11 |
Keywords
- Physical layer network coding
- Two-source shared relay channel
- Two-way relay channel
- Wireless network coding