Deterministic Relay Networks with State Information

Details Deterministic Relay Networks with State Information Deterministic Relay Networks with State Information

2009-05-19

arxiv.org/abs/0905.3086v2

Computer Science

Information Theory

5 pages, to appear in proc. IEEE ISIT, June 2009

Scientific paper

Motivated by fading channels and erasure channels, the problem of reliable communication over deterministic relay networks is studied, in which relay nodes receive a function of the incoming signals and a random network state. An achievable rate is characterized for the case in which destination nodes have full knowledge of the state information. If the relay nodes receive a linear function of the incoming signals and the state in a finite field, then the achievable rate is shown to be optimal, meeting the cut-set upper bound on the capacity. This result generalizes on a unified framework the work of Avestimehr, Diggavi, and Tse on the deterministic networks with state dependency, the work of Dana, Gowaikar, Palanki, Hassibi, and Effros on linear erasure networks with interference, and the work of Smith and Vishwanath on linear erasure networks with broadcast.

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