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CORR
2008
Springer

On the Capacity and Generalized Degrees of Freedom of the X Channel

8 years 2 months ago
On the Capacity and Generalized Degrees of Freedom of the X Channel
We explore the capacity and generalized degrees of freedom of the 2-user Gaussian X channel, i.e. a generalization of the 2-user interference channel where there is an independent message from each transmitter to each receiver. There are three main results in this paper. First, we characterize the sum capacity of the deterministic X channel model under a symmetric setting. Second, we characterize the generalized degrees of freedom of the Gaussian X channel under a similar symmetric model. Third, we extend the noisy interference capacity characterization previously obtained for the interference channel to the X channel. Specifically, we show that the X channel associated with noisy (very weak) interference channel has the same sum capacity as the noisy interference channel.
Chiachi Huang, Viveck R. Cadambe, Syed Ali Jafar
Added 10 Dec 2010
Updated 10 Dec 2010
Type Journal
Year 2008
Where CORR
Authors Chiachi Huang, Viveck R. Cadambe, Syed Ali Jafar
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