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Abstract: We establish several new results on Marton-s coding scheme and itscorresponding inner bound on the capacity region of the general broadcastchannel. We show that unlike the Gaussian case, Marton-s coding scheme withoutsuperposition coding is not optimal in general even for a degraded broadcastchannel with no common message. We then establish properties of Marton-s innerbound that help restrict the search space for computing the sum-rate. Next, weshow that the inner bound is optimal along certain directions. Finally, wepropose a coding scheme that may lead to a larger inner bound.



Autor: Amin Aminzadeh Gohari, Abbas El Gamal, Venkat Anantharam

Fuente: https://arxiv.org/







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