Browsing Departament de Tecnologies de la Informació i les Comunicacions by Author "Kangarshahi, Ehsan Asadi"

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A single-letter upper bound to the mismatch capacity

Kangarshahi, Ehsan Asadi; Guillén i Fábregas, A. (Albert) (Institute of Electrical and Electronics Engineers (IEEE), 2021)

We derive a single-letter upper bound to the mismatched-decoding capacity for discrete memoryless channels. The bound is expressed as the mutual information of a transformation of the channel, such that a maximum-likelihood ...
A sphere-packing exponent for mismatched decoding

Kangarshahi, Ehsan Asadi; Guillén i Fábregas, A. (Albert) (Institute of Electrical and Electronics Engineers (IEEE), 2021)

We derive a sphere-packing error exponent for mismatched decoding over discrete memoryless channels. We find a lower bound to the probability of error of mismatched decoding that decays exponentially for coding rates smaller ...
Minimum probability of error of list M-ary hypothesis testing

Kangarshahi, Ehsan Asadi; Guillén i Fábregas, A. (Albert) (Oxford University Press, 2023)

We study a variation of Bayesian M-ary hypothesis testing in which the test outputs a list of L candidates out of the M possible upon processing the observation. We study the minimum error probability of list hypothesis ...

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