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On the achievable rate region of a state-dependent MAC with cooperating encoders

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4 Author(s)
Mohammad Javad Emadi ; Information Systems and Security Lab (ISSL), EE Dept., Sharif University of Technology, Tehran, Iran ; Majid Nasiri Khormuji ; Mikael Skoglund ; Mohammad Reza Aref

The two-user discrete memoryless state-dependent multiple-access channel with cooperating encoders is considered. It is assumed that the channel is controlled with two independent states such that each of the channel state information is noncausally available at one encoder. Moreover, based on the intrinsic characteristic of wireless networks, it is assumed that each encoder strictly causally receive a noisy version of the transmitted signal of the other encoder. Hence, the encoders can cooperate in transmitting the message to the receiver. An achievable rate region for the channel is derived by use of rate splitting, block Markov encoding and Gelfand-Pinsker multilevel encoding along with partial decoding at the encoders and backward decoding at the receiver. Finally, for a Gaussian channel model the proposed achievable rate region is evaluated and discussed.

Published in:

Communication Technologies Workshop (Swe-CTW), 2012 Swedish

Date of Conference:

24-26 Oct. 2012