Three-user cognitive channels with cumulative message sharing: An achievable rate region

KG Nagananda, CR Murthy - 2009 IEEE Information Theory …, 2009 - ieeexplore.ieee.org
2009 IEEE Information Theory Workshop on Networking and …, 2009ieeexplore.ieee.org
In this paper, an achievable rate region for the three-user discrete memoryless interference
channel with asymmetric transmitter cooperation is derived. The three-user channel
facilitates different ways of message sharing between the transmitters. We introduce a
manner of noncausal (genie aided) unidirectional message-sharing, which we term
cumulative message sharing. We consider receivers with predetermined decoding
capabilities, and define a cognitive interference channel. We then derive an achievable rate …
In this paper, an achievable rate region for the three-user discrete memoryless interference channel with asymmetric transmitter cooperation is derived. The three-user channel facilitates different ways of message sharing between the transmitters. We introduce a manner of noncausal (genie aided) unidirectional message-sharing, which we term cumulative message sharing. We consider receivers with predetermined decoding capabilities, and define a cognitive interference channel. We then derive an achievable rate region for this channel by employing a coding scheme which is a combination of superposition and Gel'fand-Pinsker coding techniques.
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