When Network Coding and Dirty Paper Coding Meet in a Cooperative Ad Hoc Network

Publication Type:

Journal Article


IEEE Transactions on Wireless Communications, Volume 7, Issue 5, p.1862-1867 (2008)


ad hoc network, cooperative communications, dirty paper coding, network coding, precoding


We develop and analyze new cooperative strategies for ad hoc networks that are more spectrally efficient than classical Decode & Forward (DF) protocols. Using analog network coding, our strategies preserve the practical half-duplex assumption but relax the orthogonality constraint. The introduction of interference due to non-orthogonality is mitigated thanks to precoding, in particular Dirty Paper coding. Combined with smart power allocation, our cooperation strategies allow to save time and lead to a more efficient use of the bandwidth and to improved network throughput with respect to classical Repetition-DF and Parallel-DF.

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