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Summary: Transport Capacity of Wireless Networks:
Benefits from Multi-Access Computation Coding
Jasper Goseling
Michael Gastpar§
Jos H. Weber
j.goseling@tudelft.nl gastpar@eecs.berkeley.edu j.h.weber@tudelft.nl
IRCTR/CWPC, WMC Group
Department of Electrical Engineering
Delft University of Technology and Computer Sciences
The Netherlands University of California, Berkeley, USA
Abstract
We consider the effect on the transport capacity of wireless networks of different
physical layer coding mechanisms. We compare the performance of traditional
channel coding techniques, turning the wireless network in reliable point-to-point
channels, with multi-access computation coding, in which nodes receive functions
of messages transmitted by different neighbours. In both cases, network coding
is used on higher layers. For one-dimensional networks, the benefit in transport
capacity of computation-coding over point-to-point channels is a factor of 2; for
two-dimensional networks, we show it to be at least 2.5.
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