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The Amplify-based Multiple-Relay Multiple-Access Channel: Capacity Region and MAC-BC Duality

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2 Author(s)
del Coso, A. ; Centre Tecnologic de Telecomunicacions de Catalunya, Castelldefels ; Ibars, C.

We consider the multiple access channel (MAC) assisted by N parallel relays that only have buffering and amplifying capabilities. For this channel, we derive the capacity region applying results on MAC with finite memory. Later, the MAC-broadcast (BC) duality is demonstrated using duality arguments for vector channels. Indeed, the capacity region of the Gaussian amplify-based BC with N parallel relays is shown to be the capacity region of the amplify-based MAC with sum power constraint, and to be achievable through dirty paper coding.

Published in:

Information Theory for Wireless Networks, 2007 IEEE Information Theory Workshop on

Date of Conference:

1-6 July 2007