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Communication over channels with state is a classical problem extensively studied. Herein, the problem statement is extended to consider a multihop channel where the channel state information in hops, unavailable to neither the source, the destination, nor the relay(s), is to be estimated at the destination, along with reliable information transmission. Each relay in the multihop channel forwards...
Quantum memories can be regarded as quantum channels that transmit information through time without moving it through space. Aiming at a reliable storage of information, we may thus not only encode at the beginning and decode at the end, but also intervene during the transmission—a possibility not captured by the ordinary capacities in quantum Shannon theory. In this paper, we introduce capacities...
In this paper, we provide a semi-analytical method for predicting the upper and lower bound of the end-to-end mutual information for a relay network with practical codes and different combining and decoding mechanisms. Especially in the case of non error-free decoding at the relays, the prediction can be used to significantly improve the performance of the system under consideration.
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