Results 221 to 230 of about 67,451 (260)

Cooperative Diversity

2008
This chapter discusses capacity bounds and code designs.
Stankovic, V., Host-Madsen, A., Xiong, Z.   +2 more
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Capacity bounds for Cooperative diversity

IEEE Transactions on Information Theory, 2006
In a cooperative diversity network, users cooperate to transmit each others' messages; to some extent nodes therefore collectively act as an antenna array and create a virtual or distributed multiple-input multiple-output (MIMO) system. In this paper, upper and lower bounds for the information-theoretic capacity of four-node ad hoc networks with two ...
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Diversity and multiplexing tradeoff bounds for cooperative diversity protocols

International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings., 2004
We consider a wireless network with multiple terminals (m/spl ges/2) as well as multiple receive antennas at the destination (N/spl ges/1) and obtain diversity multiplexing tradeoff upper bounds for some recently proposed cooperative diversity protocols.
Narayan Prasad, Mahesh K. Varanasi
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An experimental framework for the evaluation of cooperative diversity

2009 43rd Annual Conference on Information Sciences and Systems, 2009
Cooperative diversity is the result of relaying among nodes to achieve space diversity in multipath environments that offer limited time and frequency diversity. Although there is now substantial literature covering specification and analysis of cooperative communication strategies based upon models of wireless environments, there is much less work ...
Glenn Bradford, J. Nicholas Laneman
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Multiple Source Cooperation Diversity

IEEE Communications Letters, 2004
We propose a new class of cooperative diversity schemes based on joint coding of the data of multiple wireless users. These schemes can achieve high diversity orders and high code rates.
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Wireless Network Coding with Cooperative Diversity

Wireless Personal Communications, 2010
In this paper we integrate the ideas of network coding and relays into an existing practical network architecture used in a wireless network scenario. Specifically, we use the COPE architecture to test our ideas. Since previous works have focused on the communication aspect at the physical layer level, we attempt to take it one step further by ...
Asnar, Anang Z., Magaña, Mario E., Felhauer, Tobias   +2 more
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Blind cooperative diversity with multiple relays

2008 3rd International Symposium on Wireless Pervasive Computing, 2008
Mobile users with single antennas can still take advantage of spatial diversity through cooperative space-time encoded transmission. In this paper, we consider a scheme in which a relay chooses to cooperate only if its source-relay channel is of an acceptable quality and we evaluate the usefulness of relaying when the source acts blindly and ignores ...
Kamel Tourki, Mohamed-Slim Alouini, Luc Deneire   +2 more
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A novel adaptive cooperative diversity scheme

2010 International Conference on Wireless Communications & Signal Processing (WCSP), 2010
Cooperative diversity network has been recently proposed as a way to form virtual antenna arrays that can be used to improve the performance of the wireless network. This paper presents a novel adaptive cooperative diversity scheme with two relays using incremental relaying (TR) protocol.
Xinying Diao, Shu Zhang
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Evolution of cooperation driven by the diversity of emotions

Connection Science, 2014
Biotic individuals often compare their own payoffs with those of others, which results in endogenetic emotions ranging from compassion to harshness towards a weaker player or from respect to envy feeling against a stronger fellow. Consequently, the individual reaction can be a cooperative or defect act.
Nenggang Xie, Kaixuan Zhen, Chao Wang 0105, Ye Ye 0001, Lu Wang 0009   +4 more
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Performance analysis of coded cooperation diversity

IEEE International Conference on Communications, 2003. ICC '03., 2004
In a multi-user environment, coded cooperation creates transmit diversity for small mobiles (e.g. handsets) that cannot support more than one antenna. Coded cooperation allows these mobiles to share their antennas via a simple and effective coding method.
Todd E. Hunter, Aria Nosratinia
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