• Conference Object  

      Ergodic capacity under channel distribution uncertainty 

      Loyka, S.; Charalambous, Charalambos D.; Ioannou, I. (Institute of Electrical and Electronics Engineers Inc., 2014)
      The impact of channel distribution uncertainty on the performance of fading channels is studied. The compound capacity of a class of ergodic fading channels subject to channel distribution uncertainty is obtained, for ...
    • Conference Object  

      Information structures of capacity achieving distribution for channels with memory and feedback 

      Kourtellaris, C. K.; Charalambous, Charalambos D. (Institute of Electrical and Electronics Engineers Inc., 2016)
      The information structures of the optimal channel input distributions P[0,n] t {PAi|Ai-1,Bi-1 : i = 0,1.,n}, which correspond to the extremum problem of feedback capacity equation are identified, for any class of channel ...
    • Conference Object  

      Minimizing outage probability for a class of MIMO channels 

      Charalambous, Charalambos D.; Ioannou, I. (2009)
      In this paper we investigate the outage probability of Multiple-Input Multiple-Output (MIMO) channels, when the probability distribution of the channel gains is not completely known to the transmitter and receiver. The ...
    • Conference Object  

      Outage capacity and probability for a class of MIMO channels 

      Ioannou, I.; Charalambous, Charalambos D. (2010)
      This paper is concerned with outage capacity and probability of Multiple-Input Multiple-Output (MIMO) systems for a class of channel distributions. The results illustrate how outage probability and capacity degrade as a ...
    • 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 ...
    • Conference Object  

      Outage probability under channel distribution uncertainty 

      Ioannou, I.; Charalambous, Charalambos D.; Loyka, S. (2011)
      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 ...
    • Article  

      Sequential Necessary and Sufficient Conditions for Capacity Achieving Distributions of Channels with Memory and Feedback 

      Stavrou, P. A.; Charalambous, Charalambos D.; Kourtellaris, C. K. (2017)
      We derive sequential necessary and sufficient conditions for any channel input conditional distribution P0,n δ {PXt |Xt?1,Yt?1 : T = 0, . . . , n} to maximize the finite-Time horizon directed information defined by CFB ...
    • Conference Object  

      Sequential Necessary and Sufficient Conditions for optimal channel input distributions of channels with memory and feedback 

      Stavrou, P. A.; Charalambous, Charalambos D.; Kourtellaris, C. K. (Institute of Electrical and Electronics Engineers Inc., 2016)
      We derive Sequential Necessary and Sufficient Conditions (SNSC) for any channel input distribution equation to maximize directed information for channel distributions of the form equation, where Xn t {X0., Xn} and Yn t ...