Results 281 to 290 of about 563,494 (333)

On the SEP of Cooperative Diversity with Opportunistic Relaying

IEEE Communications Letters, 2008
We analyze the exact symbol error probability (SEP) of cooperative diversity with opportunistic amplify-and-forward (AF) relaying. The benefit of this opportunism to the SEP is assessed by comparing with maximal ratio combining of orthogonal multiple AF relay transmissions.
Hien Ngo, Hyundong Shin
exaly   +3 more sources

On the diversity of cooperative systems

2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004
The paper addresses some of the opportunities and the challenges that could arise in the design and analysis of multi-hop systems that utilize cooperation among several intermediate regenerative relays to provide reliable high-quality communication between a source and a destination.
Paul A. Anghel, Mostafa Kaveh
openaire   +1 more source

Cooperative-Diversity Slotted ALOHA

Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks (QSHINE'05), 2005
We propose a cooperative-diversity technique for ad hoc networks based on the decode-and-forward relaying strategy. We develop a MAC protocol based on slotted ALOHA that allows neighbors of a transmitter to act as relays and forward a packet toward its final destination when the transmission to the intended recipient fails.
Wing-Hin Wong, John M. Shea, Tan F. Wong
openaire   +1 more source

Cooperative diversity with selfish users

2008 42nd Annual Conference on Information Sciences and Systems, 2008
Cooperation is socially desirable when users obey the rules of cooperation. This is the case in networks controlled by a single entity, such as military networks. On the other hand, in commercial wireless networks wherein users may behave for selfish intentions, it may be difficult to achieve a socially efficient cooperation without a mechanism that ...
Sintayehu Dehnie, Nasir D. Memon
openaire   +1 more source

The role of diversity in the evolution of cooperation

Journal of Theoretical Biology, 2012
Understanding the evolutionary mechanisms that promote and maintain cooperative behavior is recognized as a major theoretical problem where the intricacy increases with the complexity of the participating individuals. This is epitomized by the diverse nature of Human interactions, contexts, preferences and social structures.
Santos, Francisco, Pinheiro, Flavio, Lenaerts, Tom, Pacheco, Jorge   +3 more
openaire   +3 more sources

Noncooperative Routing with Cooperative Diversity

2007 IEEE International Conference on Communications, 2007
Routing in wireless networks confronts more diverse and more rapidly varying characteristics associated with wireless links. Several recent protocols have tried to exploit cooperative diversity to deal with these channel characteristics, but they suffer from large overhead costs due to the need for collaboration among candidate nodes of next hop.
Benjamin R. Hamilton, Xiaoli Ma
openaire   +1 more source

Cooperative Diversity

2008
This chapter discusses capacity bounds and code designs.
Stankovic, V., Host-Madsen, A., Xiong, Z.   +2 more
openaire   +1 more source