Outage probability under channel distribution uncertainty
Ημερομηνία
2011ISBN
978-1-4577-0595-3Source
IEEE International Symposium on Information Theory - ProceedingsIEEE International Symposium on Information Theory - Proceedings
Pages
2954-2958Google Scholar check
Keyword(s):
Metadata
Εμφάνιση πλήρους εγγραφήςΕπιτομή
Outage probability of a class of block-fading (MIMO) channels is considered under channel distribution uncertainty, when the channel or its distribution are not known but the latter is known to belong to a class of distributions where each member is within a certain distance from a nominal distribution. Relative entropy is used as a measure of distance between distributions. Compound outage probability defined as min (over the input distribution) -max (over the channel distribution class) outage probability is introduced and investigated, which generalizes the standard outage probability to the case of partial channel distribution information. Compound outage probability characterization via one-dimensional convex optimization, its properties and approximations are given. It is shown to have a two-regime behavior: when the nominal outage probability decreases, the compound outage first decreases linearly down to a certain threshold and then only logarithmically (i.e. very slowly), so that no significant further decrease is possible. The input distribution optimized for the nominal channel distribution is shown to be also optimal for the whole class of distributions. The effect of swapping the distributions in relative entropy is investigated and an error floor effect is established. The obtained results hold for a generic channel model (arbitrary nominal fading and noise distributions). © 2011 IEEE.
Collections
Cite as
Related items
Showing items related by title, author, creator and subject.
-
Article
A two-stage distributed architecture for voltage control in power distribution systems
Robbins, B. A.; Hadjicostis, Christoforos N.; Domínguez-Garcia, A. D. (2013)In this paper, we propose an architecture for voltage regulation in distribution networks that relies on controlling reactive power injections provided by distributed energy resources (DERs). A local controller on each bus ...
-
Article
A distributed generation control architecture for islanded ac microgrids
Cady, S. T.; Domínguez-Garcia, A. D.; Hadjicostis, Christoforos N. (2015)In this paper, we propose a distributed architecture for generation control in islanded ac microgrids with both synchronous generators and inverter-interfaced power supplies. Although they are smaller and have lower ratings, ...
-
Article
Outage probability under channel distribution uncertainty
Ioannou, I.; Charalambous, Charalambos D.; Loyka, S. (2012)Outage probability and capacity of a class of block-fading MIMO channels are considered under partial channel distribution information. Specifically, the channel or its distribution is not known but the latter is known to ...