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Message and State Cooperation in a Relay Channel When the Relay Has Strictly Causal State Information [article]

Min Li, Osvaldo Simeone, Aylin Yener
2011 arXiv   pre-print
A state-dependent relay channel is studied in which strictly causal channel state information is available at the relay and no state information is available at the source and destination.  ...  Finally, a Gaussian model is studied, along with corresponding numerical results that illuminate the relative merits of state and message cooperation.  ...  Remark 7: If the relay ignores the available state information, it only cooperates with the source in sending the message information.  ... 
arXiv:1102.0755v1 fatcat:gh4wzkd355epppp4v2eth5ic7q

Message and state cooperation in a relay channel when the relay has strictly causal state information

Min Li, Osvaldo Simeone, Aylin Yener
2011 2011 Information Theory and Applications Workshop  
A state-dependent relay channel is studied in which strictly causal channel state information is available at the relay and no state information is available at the source and destination.  ...  Finally, a Gaussian model is studied, along with corresponding numerical results that illuminate the relative merits of state and message cooperation.  ...  Remark 7: If the relay ignores the available state information, it only cooperates with the source in sending the message information.  ... 
doi:10.1109/ita.2011.5743602 dblp:conf/ita/LiSY11 fatcat:qf6njkfxp5a6di3nuncho6gslq

RF energy powered feedback-aided cooperation

Hiroki Kawabata, Koji Ishibashi
2014 2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)  
Thus, we propose feedback-aided cooperation with RF energy harvesting, which can exploit all the available resources in the network, and show that utilizing the explicit or implicit feedback information  ...  Moreover, if the source can get the information about the residual battery and decoding results of the relay, the source can recognize the availability of relay and resources.  ...  Also, we assume that relay has the RF energy harvesting capability and the battery with finite size ≥ 0 where the residual battery = 0 at the beginning of transmissions since the relay only utilizes the  ... 
doi:10.1109/pimrc.2014.7136211 dblp:conf/pimrc/KawabataI14 fatcat:ireybrf5fzblpk2rtjbj2hgrcm

Compress-and-forward strategy for the relay channel with causal state information

Mahtab Mirmohseni, Bahareh Akhbari, Mohammad Reza Aref
2009 2009 IEEE Information Theory Workshop  
So, three different setups are investigated in which causal CSI is available: 1) at the relay only, 2) at the source only and 3) both at the source and the relay nodes.  ...  The lower bounds are derived based on Shannon's strategy where CSI is known, and Compress-and-Forward (CF) Strategy at the relay.  ...  When CSI is available only at the relay and is unknown to the source, which is the case in this part, source and relay can not cooperate.  ... 
doi:10.1109/itw.2009.5351399 fatcat:cqmh2mys45bddhscwfz7lphm7y

The Dynamic Spectrum Aggregation Strategy for Cognitive Networks Based on Markov Model [article]

Yifei Wei, Qiao Li, Xia Gong, Da Guo, Yong Zhang
2016 arXiv   pre-print
relay networks on a multi-user and multi-relay scenario aiming at ensuring the user channel capacity and maximizing the network throughput.  ...  Combing cognitive relay and spectrum aggregation technologies, in this paper, we propose a dynamic spectrum aggregation strategy based on the Markov Prediction of the state of spectrum for the cooperatively  ...  state only at 5 time slots.  ... 
arXiv:1612.03204v1 fatcat:gkdnmcxtsbchppo5wzjq7oz6zi

Smart Relay Selection Scheme Based on Fuzzy Logic with Optimal Power Allocation and Adaptive Data Rate Assignment

Nayab Taj, Mohammad Haseeb Zafar, Shakeel Ahmad Waqas, Humaira Rehman, Madini O Alassafi, Imran Khan
2022 International Journal of Communication Networks and Information Security  
In this paper fuzzy logic-based algorithm with improved process of relay selection is presented which not only allocate optimal power for transmission but also help in choosing adaptive data rate.  ...  of error at the cost of computational complexity which is 10 times more than case-I.  ...  The power at the relay is now random and depends on the available energy of the information signal received at the relay.  ... 
doi:10.17762/ijcnis.v11i1.4049 fatcat:awz7lqbyk5c3vi3ohrk2tfaheu

Rate Regions for the Partially-Cooperative Relay Broadcast Channel with Non-causal Side Information [article]

A. Zaidi, L. Vandendorpe
2007 arXiv   pre-print
In this case, the source uses generalized dirty paper coding (GDPC), i.e., DPC combined with partial state cancellation, when only the source is informed, and DPC alone when both the source and the relay  ...  is non-causally known at the source only.  ...  Lemma 2: For a discrete memoryless partially cooperative relay broadcast channel p(y 1 , y 2 |x 1 , x 2 , s) with state information S n non-causally available at the source only, a rate tuple (R 0 , R  ... 
arXiv:0709.0518v1 fatcat:okrhetxmzzg3pjsz5yq4ujlmay

Cooperative relaying with state available at the relay

Abdellatif Zaidi, Shivaprasad Kotagiri, J. Nicholas Laneman, Luc Vandendorpe
2008 2008 IEEE Information Theory Workshop  
We consider a state-dependent full-duplex relay channel with the state of the channel non-causally available at only the relay.  ...  The upper bound is also better than that obtained by assuming that the channel state is available at the source, the relay, and the destination.  ...  Fig. 1 . 1 RC with state information available non-causally at only the relay.  ... 
doi:10.1109/itw.2008.4578638 dblp:conf/itw/ZaidiKLV08 fatcat:vyd7nx3xuzdfhlfxk2lhy2yic4

Lower Bounds on the Capacity Regions of the Relay Channel and the Cooperative Relay-Broadcast Channel with Non-Causal Side Information

A. Zaidi, L. Vandendorpe, P. Duhamel
2007 2007 IEEE International Conference on Communications  
In this work, coding for the relay channel and the cooperative relay broadcast channel controlled by random parameters are studied.  ...  of the state.  ...  ACKNOWLEDGEMENT The authors would like to thank the NEWCOM project for funding.  ... 
doi:10.1109/icc.2007.995 dblp:conf/icc/ZaidiVD07 fatcat:h2dbdvjglzfh5bxluix6viwgpq

Selective Cooperative Relaying over Time-Varying Channels [article]

Diomidis S. Michalopoulos, Athanasios S. Lioumpas, George K. Karagiannidis, Robert Schober
2009 arXiv   pre-print
In selective cooperative relaying only a single relay out of the set of available relays is activated, hence the available power and bandwidth resources are efficiently utilized.  ...  In this paper, we study the rate at which a relay switching occurs in selective cooperative relaying applications in time-varying fading channels.  ...  To this end, activating only a single relay out of the set of available relays has been shown to be an effective means of achieving cooperative diversity while limiting the negative effects of orthogonal  ... 
arXiv:0905.0564v2 fatcat:z2wqsfv3nja6bg5cxgfmoxq5xe

Rate Regions for the Partially-Cooperative Relay Broadcast Channel with Non-causal Side Information

Abdellatif Zaidi, Luc Vandendorpe
2007 2007 IEEE International Symposium on Information Theory  
In this case, the source uses generalized dirty paper coding (GDPC), i.e., DPC combined with partial state cancellation, when only the source is informed, and DPC alone when both the source and the relay  ...  is non-causally known at the source only.  ...  Lemma 2: For a discrete memoryless partially cooperative relay broadcast channel p(y 1 , y 2 |x 1 , x 2 , s) with state information S n non-causally available at the source only, a rate tuple (R 0 , R  ... 
doi:10.1109/isit.2007.4557394 dblp:conf/isit/ZaidiV07 fatcat:yjsjl4clu5ainnln4ljtmn5jqy

Impact of Relay Selection Overhead in Cooperative Diversity Protocols

Nikolaj Marchenko, Christian Bettstetter
2011 2011 IEEE Vehicular Technology Conference (VTC Fall)  
Relaying with a preassigned relay can be more beneficial in such cases. Index Terms-Wireless communications, cooperative diversity, relay selection, signaling overhead. • Fixed relay.  ...  Results show that the selection overhead can significantly reduce benefits of reactive relay selection if data frames are small or only few nodes overhear the transmissions.  ...  ACKNOWLEDGMENTS This work was performed as part of the project Cooperative Relaying in Wireless Networks (RELAY) of the research cluster Lakeside Labs.  ... 
doi:10.1109/vetecf.2011.6092835 dblp:conf/vtc/MarchenkoB11 fatcat:h4qyelo2z5gzni4lh2gab4dele

Physical Layer Security in Buffer-State-Based Max-Ratio Relay Selection Exploiting Broadcasting With Cooperative Beamforming and Jamming

Ryota Nakai, Shinya Sugiura
2019 IEEE Transactions on Information Forensics and Security  
with an eavesdropper at a central coordinator.  ...  Furthermore, we introduce the concept of cooperative jamming into the proposed scheme, in order to interfere with an eavesdropper's reception, while dispensing with the full channel state information associated  ...  SNRs of the channels associated with an eavesdropper were available at a central coordinator.  ... 
doi:10.1109/tifs.2018.2854711 fatcat:75glfptbjzfxxopsga5i2w6tua

Power and Channel Allocation for Cooperative Relay in Cognitive Radio Networks

Guodong Zhao, Chenyang Yang, Geoffrey Ye Li, Dongdong Li, Anthony C. K. Soong
2011 IEEE Journal on Selected Topics in Signal Processing  
In the context, those spectrum bands available at all three nodes may either perform relay diversity transmission or assist the transmission in direct or dual-hop channels.  ...  On the other hand, the relay node involves both dual-hop and relay diversity transmission.  ...  POWER AND CHANNEL ALLOCATION In a three-node CR network with a cooperative relay, the relay improves performance by exploiting available spectrum bands at the three nodes.  ... 
doi:10.1109/jstsp.2010.2052784 fatcat:etf7tvb67nbktkvmpmmkg2h2be

Cooperative ARQ With Relay Selection: An Analytical Framework Using Semi-Markov Processes

Nikolaj Marchenko, Christian Bettstetter
2014 IEEE Transactions on Vehicular Technology  
Christian Bettstetter studied electrical engineering at TU München, receiving the Dipl.-Ing. in 1998 and the Dr.-Ing. (summa cum laude) in 2004. He was then a senior researcher at DOCOMO.  ...  An important building block in cooperative diversity is relay selection, which has to ensure that a well-suited node is employed as relay.  ...  ACKNOWLEDGMENTS The authors would like to thank S. Toumpis, H. Adam, E. Yanmaz, U. Schilcher, and K. Lienbacher.  ... 
doi:10.1109/tvt.2013.2267551 fatcat:w4k55n2ysfgrrhzhfjeyotd74a
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