Filters








19,279 Hits in 1.9 sec

Compound Arbitrarily Varying Channels [article]

Syomantak Chaudhuri, Neha Sangwan, Mayank Bakshi, Bikash Kumar Dey, Vinod M. Prabhakaran
2021 arXiv   pre-print
We propose a communication model, that we call compound arbitrarily varying channels (CAVC), which unifies and generalizes compound channels and arbitrarily varying channels (AVC).  ...  A CAVC can be viewed as a noisy channel with a fixed, but unknown, compound-state and an AVC-state which may vary with every channel use.  ...  [2] also introduced arbitrarily varying channels (AVC) where the channel state may vary arbitrarily in a worst case manner for each symbol of transmission.  ... 
arXiv:2105.03420v1 fatcat:pa77tb25gbfz7cmh4dj2nsqqxi

Entanglement-assisted classical capacities of compound and arbitrarily varying quantum channels [article]

Holger Boche, Gisbert Janßen, Stephan Kaltenstadler
2017 arXiv   pre-print
We consider classical message transmission under entanglement assistance for compound memoryless and arbitrarily varying quantum channels.  ...  A strong converse to the entanglement-assisted classical capacities does hold for each arbitrarily varying quantum channel.  ...  For arbitrarily varying quantum channels strong converse statements always hold.  ... 
arXiv:1606.09314v3 fatcat:3icg6j56wfewjik6xlvo6zoadq

On the Continuity of the Secrecy Capacity of Compound and Arbitrarily Varying Wiretap Channels

Holger Boche, Rafael F. Schaefer, H. Vincent Poor
2015 IEEE Transactions on Information Forensics and Security  
In particular, this is done for channel uncertainty modeled via compound channels and arbitrarily varying channels, in which the legitimate users know only that the true channel realization is from a pre-specified  ...  On the other hand, the deterministic secrecy capacity of the arbitrarily varying wiretap channel is shown to be discontinuous in the uncertainty set meaning that small variations can lead to dramatic losses  ...  Arbitrarily varying wiretap channel.  ... 
doi:10.1109/tifs.2015.2465937 fatcat:qnocsmzfpnh67lbpe2v4rfaznm

Arbitrarily varying and compound classical-quantum channels and a note on quantum zero-error capacities [article]

Igor Bjelaković, Holger Boche, Gisbert Janßen, Janis Nötzel
2012 arXiv   pre-print
We consider compound as well as arbitrarily varying classical-quantum channel models. For classical-quantum compound channels, we give an elementary proof of the direct part of the coding theorem.  ...  Finally, it is shown that the connection between zero-error capacity and certain arbitrarily varying channels is, just like in the case of quantum channels, only partially valid for classical-quantum channels  ...  For every set {A s } s∈S ⊂ CQ(X, H) and every λ ∈ P(S) such that (176) holds, {A s Arbitrarily varying & compound classical-quantum channels...  ... 
arXiv:1209.6325v2 fatcat:jx7qj4lesvfx5cjv3gh7fbu64e

Entanglement-assisted classical capacities of compound and arbitrarily varying quantum channels

Holger Boche, Gisbert Janßen, Stephan Kaltenstadler
2017 Quantum Information Processing  
We consider classical message transmission under entanglement assistance for compound memoryless and arbitrarily varying quantum channels.  ...  A strong converse to the entangle-ment-assisted classical capacities does hold for each arbitrarily varying quantum channel.  ...  memoryless and arbitrarily varying quantum channels.  ... 
doi:10.1007/s11128-017-1538-6 fatcat:sbenadnlx5blvo2kotviknccyu

Arbitrarily Varying and Compound Classical-Quantum Channels and a Note on Quantum Zero-Error Capacities [chapter]

Igor Bjelaković, Holger Boche, Gisbert Janßen, Janis Nötzel
2013 Lecture Notes in Computer Science  
We consider compound as well as arbitrarily varying classical-quantum channel models. For classical-quantum compound channels, we give an elementary proof of the direct part of the coding theorem.  ...  Finally, it is shown that the connection between zero-error capacity and certain arbitrarily varying channels is, just like in the case of quantum channels, only partially valid for classical-quantum channels  ...  For every set {A s } s∈S ⊂ CQ(X, H) and every λ ∈ P(S) such that (176) holds, {A s Arbitrarily varying & compound classical-quantum channels...  ... 
doi:10.1007/978-3-642-36899-8_11 fatcat:ugo2dxswq5ayxatw37ilm44aie

Secure and Robust Identification via Classical-Quantum Channels [article]

Holger Boche, Christian Deppe, Andreas Winter
2019 arXiv   pre-print
We perform the same analysis for the case of arbitrarily varying wiretap cqq-channels (cqq-AVWC), with analogous findings, and make several observations regarding the continuity and super-additivity of  ...  To be precise, we consider first compound memoryless cq-channels and determine their identification capacity; then we add an eavesdropper, considering compound memoryless wiretap cqq-channels, and determine  ...  Next, we extend this concept to the compound and arbitrarily varying case.  ... 
arXiv:1801.09967v3 fatcat:5gpdeqjw6rgslnvltlmmtj3f7m

Capacity Results for Arbitrarily Varying Wiretap Channels [article]

Igor Bjelaković, Holger Boche, Jochen Sommerfeld
2012 arXiv   pre-print
In this work the arbitrarily varying wiretap channel AVWC is studied.  ...  We derive a lower bound on the random code secrecy capacity for the average error criterion and the strong secrecy criterion in the case of a best channel to the eavesdropper by using Ahlswede's robustification  ...  The secrecy capacity C S (W) of the arbitrarily varying wiretap channel AVWC W equals the secrecy capacity of the arbitrarily varying wiretap channel W. Proof.  ... 
arXiv:1209.5213v1 fatcat:rb4cpgakjnaerbosehodrxqn3i

Capacity Results for Arbitrarily Varying Wiretap Channels [chapter]

Igor Bjelaković, Holger Boche, Jochen Sommerfeld
2013 Lecture Notes in Computer Science  
In this work the arbitrarily varying wiretap channel AVWC is studied.  ...  We derive a lower bound on the random code secrecy capacity for the average error criterion and the strong secrecy criterion in the case of a best channel to the eavesdropper by using Ahlswede's robustification  ...  The secrecy capacity C S (W) of the arbitrarily varying wiretap channel AVWC W equals the secrecy capacity of the arbitrarily varying wiretap channel W. Proof.  ... 
doi:10.1007/978-3-642-36899-8_5 fatcat:4gzxipvdyveynkrz7wqcsfkpga

On arbitrarily varying wiretap channels for different classes of secrecy measures

Holger Boche, Rafael F. Schaefer, H. Vincent Poor
2014 2014 IEEE International Symposium on Information Theory  
In this paper, the arbitrarily varying wiretap channel (AVWC), in which the channel may vary in an unknown and arbitrary manner from channel use to channel use, is considered.  ...  For arbitrarily varying channels (AVCs) the capacity might differ depending on whether deterministic or common randomness (CR) assisted codes are used.  ...  This can be perfectly modeled with the concept of arbitrarily varying channels (AVCs) [10] [11] [12] .  ... 
doi:10.1109/isit.2014.6875259 dblp:conf/isit/BocheSP14 fatcat:25c75hoxbvcgzgx2axcjnlcj2q

Classical-quantum arbitrarily varying wiretap channel: common randomness assisted code and continuity

Holger Boche, Minglai Cai, Christian Deppe, Janis Nötzel
2016 Quantum Information Processing  
which is compound from the sender to the legal receiver and varies arbitrarily from the sender to the eavesdropper.  ...  We determine the secrecy capacities under common randomness assisted coding of arbitrarily varying classical-quantum wiretap channels.Furthermore, we determine the secrecy capacity of a mixed channel model  ...  Let {(W s , V t ) : s ∈ θ, t ∈ θ} be a compound-arbitrarily varying wiretap classical-quantum channel.  ... 
doi:10.1007/s11128-016-1473-y fatcat:364q2ngf4ncpfjjypzl2hmgilq

On the continuity of the secrecy capacity of wiretap channels under channel uncertainty

Holger Boche, Rafael F. Schaefer, H. Vincent Poor
2015 2015 IEEE International Conference on Communications (ICC)  
In particular, this is done for channel uncertainty modeled via compound channels and arbitrarily varying channels, in which the legitimate users know only that the true channel realization is from a pre-specified  ...  However, the secrecy capacity of the arbitrarily varying wiretap channel is shown to be discontinuous in the uncertainty set meaning that small variations can lead to dramatic losses in capacity.  ...  ARBITRARILY VARYING WIRETAP CHANNEL We continue our analysis with the arbitrarily varying wiretap channel.  ... 
doi:10.1109/icc.2015.7248976 dblp:conf/icc/BocheSP15 fatcat:cluqxsyljrgotjn2v4ymymc6dy

The Arbitrarily Varying Multiple-Access Channel With Conferencing Encoders

Moritz Wiese, Holger Boche
2013 IEEE Transactions on Information Theory  
Unlike compound multiple-access channels, arbitrarily varying multiple-access channels may exhibit a discontinuous increase of the capacity region when conferencing in at least one direction is enabled  ...  We derive the capacity region of arbitrarily varying multiple-access channels with conferencing encoders for both deterministic and random coding.  ...  We set We assume that the channel state varies arbitrarily from channel use to channel use.  ... 
doi:10.1109/tit.2012.2229779 fatcat:cudz6wufdbhtvbxfzje6y4v4la

Positivity, discontinuity, finite resources, and nonzero error for arbitrarily varying quantum channels

H. Boche, J. Nötzel
2014 Journal of Mathematical Physics  
The research is explicitly carried out on arbitrarily varying quantum channels (AVQCs).  ...  This is in stark contrast to the randomness-assisted capacity, which is always continuous in the channel.  ...  Due to the close correspondence between arbitrarily varying and certain compound channels, we will sometimes also encounter the case that I stands for the compound channel ({N ⊗l q } Nq∈conv(I) ) l∈N .  ... 
doi:10.1063/1.4902930 fatcat:ci47f4g44jbbtifb56wjglw3ei

Entanglement transmission over arbitrarily varying quantum channels

Rudolf Ahlswede, Igor Bjelakovic, Holger Boche, Janis Notzel
2010 2010 IEEE International Symposium on Information Theory  
We derive a regularized formula for the common randomness assisted entanglement transmission capacity of finite arbitrarily varying quantum channels (AVQC's).  ...  transmission over an arbitrarily varying quantum channel.  ...  INTRODUCTION We consider the task of entanglement transmission over an arbitrarily varying channel. This can be viewed as a threeparty game in the following sense.  ... 
doi:10.1109/isit.2010.5513541 dblp:conf/isit/AhlswedeBBN10 fatcat:attby3weabh53c42r2grrrgio4
« Previous Showing results 1 — 15 out of 19,279 results