Results 41 to 50 of about 1,342,821 (331)

Feedback Capacity of the Compound Channel

open access: yes, 2007
In this work we find the capacity of a compound finite-state channel with time-invariant deterministic feedback. The model we consider involves the use of fixed length block codes. Our achievability result includes a proof of the existence of a universal
Permuter, Haim, Shrader, Brooke
core   +2 more sources

The Secrecy Capacity of Compound Gaussian MIMO Wiretap Channels

open access: yes, 2015
Strong secrecy capacity of compound wiretap channels is studied. The known lower bounds for the secrecy capacity of compound finite-state memoryless channels under discrete alphabets are extended to arbitrary uncertainty sets and continuous alphabets ...
Loyka, Sergey, Schaefer, Rafael F.
core   +1 more source

Strong converse for the quantum capacity of the erasure channel for almost all codes [PDF]

open access: yes, 2014
A strong converse theorem for channel capacity establishes that the error probability in any communication scheme for a given channel necessarily tends to one if the rate of communication exceeds the channel's capacity.
Wilde, Mark M., Winter, Andreas
core   +4 more sources

Utilizing Non-Orthogonal Polarization With Polarization Reuse Technique for 4 × 4 MIMO Capacity Enhancement

open access: yesIEEE Access, 2022
5G communication promises fast and large data stream which requires higher capacity of a cellular wireless network. A higher capacity could be achieved with wider bandwidth and network densification, but they are expensive approaches.
Laxmikant Minz   +6 more
doaj   +1 more source

Capacity of a POST Channel with and without Feedback

open access: yes, 2013
We consider finite state channels where the state of the channel is its previous output. We refer to these as POST (Previous Output is the STate) channels. We first focus on POST($\alpha$) channels.
Asnani, Himanshu   +2 more
core   +1 more source

Broadband channel capacities [PDF]

open access: yesPhysical Review A, 2003
11 pages, 7 figures, 3 ...
GIOVANNETTI, VITTORIO   +3 more
openaire   +3 more sources

Two-User Erasure Interference Channels with Local Delayed CSIT

open access: yes, 2016
We study the capacity region of two-user erasure interference channels with local delayed channel state information at the transmitters. In our model, transmitters have local mismatched outdated knowledge of the channel gains.
Calderbank, Robert, Vahid, Alireza
core   +1 more source

Chain-Rules for Channel Capacity [PDF]

open access: yes2021 IEEE International Symposium on Information Theory (ISIT), 2021
We show some chain-rules for the capacity of classical-quantum and quantum channels. We use the concept of Nash-Equilibrium in game-theory, and its existence in suitably defined games, to arrive at the chain-rules.
openaire   +2 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

Closed-Form Expressions of Ergodic Capacity and MMSE Achievable Sum Rate for MIMO Jacobi and Rayleigh Fading Channels

open access: yesIEEE Access, 2020
Multimode/multicore fibers are expected to provide an attractive solution to overcome the capacity limit of the current optical communication system. In the presence of strong crosstalk between modes and/or cores, the squared singular values of the input/
Amor Nafkha, Nizar Demni
doaj   +1 more source

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