Network Simplification: the Gaussian Diamond Network with Multiple Antennas

Date

2011-08-05

Author

Nazaroglu, Caner
Ebrahimi, Javad B.
Oezguer, Ayfer
Fragouli, Christina

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We consider the N-relay Gaussian diamond network when the source and the destination have n(s) >= 2 and n(d) >= 2 antennas respectively. We show that when n(s) = n(d) = 2 and when the individual MISO channels from the source to each relay and the SIMO channels from each relay to the destination have the same capacity, there exists a two relay sub-network that achieves approximately all the capacity of the network. To prove this result, we establish a simple relation between the joint entropies of three Gaussian random variables, which is not implied by standard Shannon-type entropy inequalities.(1)

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https://hdl.handle.net/11511/67491

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Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

C. Nazaroglu, J. B. Ebrahimi, A. Oezguer, and C. Fragouli, “Network Simplification: the Gaussian Diamond Network with Multiple Antennas,” 2011, p. 79, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67491.