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It is known that given the real sum of two independent uniformly distributed lattice points from the same nested lattice codebook, the eavesdropper can obtain at most 1 bit of information per channel regarding the value of one of the lattice points. In this work, we study the effect of this 1 bit information on the equivocation expressed in three commonly used information theoretic measures, i.e.,...
The capacity region for a state dependent degraded broadcast channel is derived. We study the case with noncausal channel state information (CSI) at the transmitter but no receiver CSI. For this model inner and outer bounds for the capacity region were known. We prove the achievability by introducing a new random coding scheme called the enhanced common randomness superposition coding. In this scheme,...
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