The identification capacity and resolvability of channels with input cost constraint

Details The identification capacity and resolvability of channels with input cost constraint The identification capacity and resolvability of channels with input cost constraint

2000-05-08

arxiv.org/abs/math/0005073v1

Mathematics

Probability

Scientific paper

Given a general channel, we first formulate the idetification capacity problem as well as the resolvability problem with input cost constraint in as the general form as possible, along with relevant fundamental theorems. Next, we establish some mild sufficient condition for the key lemma linking the identification capacity with the resolvability to hold for the continuous input alphabet case with input cost constraint. Under this mild condition, it is shown that we can reach the {\em continuous}-input fundamental theorem of the same form as that for the fundamental theorem with {\em finite} input alphabet. Finally, as important examples of this continuous-input fundamental theorem, we show that the identification capacity as well as the resolvability coincides with the channel capacity for stationary additive white (and also non-white) Gaussian noise channels.

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