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CORR
2008
Springer

The Capacity Region of the Degraded Finite-State Broadcast Channel

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The Capacity Region of the Degraded Finite-State Broadcast Channel
We consider the discrete, time-varying broadcast channel with memory, under the assumption that the channel states belong to a set of nite cardinality. We begin with the de nition of the general nite-state broadcast channel and discuss the possible de nitions of the probability of error for this model. Next, we de ne the physically degraded nite-state broadcast channel and show that a superposition codebook with memory achieves capacity for this scenario. We then de ne the stochastically degraded nite-state broadcast channel, and relate this model to a physical communication scenario. We use the capacity result for the physically degraded channel to characterize the capacity of the stochastically degraded one. In both scenarios we consider the general nite-state channel as well as the indecomposable one, in which the effect of the initial state on future states becomes negligible with time.
Ron Dabora, Andrea J. Goldsmith
Added 09 Dec 2010
Updated 09 Dec 2010
Type Journal
Year 2008
Where CORR
Authors Ron Dabora, Andrea J. Goldsmith
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