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This paper proposes a user cooperation scheme to improve the achievable rate of a cell edge user in a two cell model. In the proposed user cooperation, one user helps decoding of the other user by either desired signal forwarding (SF) or interference forwarding (IF). We derive an achievable rate region of the proposed user cooperation and compare it with that of a conventional two-cell system without...
We characterize the Pareto boundary of the achievable rate region of the two-user symmetric Gaussian interferencechannel when transmitters control their transmission power and receivers have successive interference cancelationcapability. By identifying the shape of achievable rate region according to the strength of interference channels, wefind combinations of decoding and power allocation strategies...
We propose a simple linear precoding scheme to cancel interference in downlink multiuser cellular relay networks where the available information is asymmetric between the base station and the relay node. The interference signal from the relay is eliminated by linear pre-pocessing at the base station without any cooperation between the base station and the relay. In the information asymmetric environment,...
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