Results 261 to 270 of about 2,780,357 (337)

Diversity-Based Cooperative Multivehicle Path Planning for Risk Management in Costmap Environments

IEEE transactions on industrial electronics (1982. Print), 2019
This paper focuses on developing new navigation algorithms for cooperative unmanned vehicles in costmap environments. The vehicles need to plan optimal paths subject to mutual diversity.
Johnathan Votion, Yongcan Cao
semanticscholar   +1 more source

Cooperation diversity through coding

Proceedings IEEE International Symposium on Information Theory,, 2003
We propose a new user cooperation scheme for wireless communications in which we combine cooperation with existing channel coding methods. Simulation results show a significant improvement in the BER for both users, even when the channel between them is poor, or when they have significantly different channel qualities to the base station.
T.E. Hunter, A. Nosratinia
openaire   +1 more source

Enhanced cooperative packet retransmission employing joint cooperative diversity and symbol mapping diversity

Journal of Zhejiang University-SCIENCE A, 2008
A joint cooperation diversity and symbol mapping diversity (SMD) strategy is proposed for cooperative packet retransmission system with high-order modulation such as 16QAM. Substantial SER/BER (symbol error rate/bit error rate) gains result from multiple packet transmissions over independent paths and distinct bit-to-symbol mappings for each packet ...
Wei Ji, Bao-yu Zheng
openaire   +1 more source

Opportunistic Source/Destination Cooperation in Cooperative Diversity Networks

IEEE Transactions on Wireless Communications, 2010
In this paper, we combine opportunistic transmission and source/destination cooperation in a decode-and-forward (DF)-based two-hop cooperative diversity network consisting of multiple source-destination pairs and a single relay. Firstly, we consider a special scenario with two source-destination pairs.
MinChul Ju, Il-Min Kim, Dong In Kim
openaire   +1 more source

Unpacking cooperation in diverse teams

Team Performance Management: An International Journal, 2011
PurposeThis paper aims to investigate the effect of team members' informational diversity (i.e. educational and functional dissimilarity) on team cooperation, focusing on the moderating role of long‐term time orientation. The authors theorize that teams' long‐term orientation moderates the diversity‐cooperation relationship through its effect on ...
Kang Yang Trevor Yu, Daniel M. Cable
openaire   +1 more source

Dual antenna cooperative diversity techniques

IEE Proceedings - Communications, 2006
This paper presents the application of two spatial transmission techniques which can be used in a cooperative diversity wireless network, where each mobile terminal has two antenna elements. Initially the current body of work in single antenna cooperative diversity is expanded to include the effect of cooperative diversity upon the capacity of a link ...
A.J. Jardine, J.S. Thompson, S. McLaughlin, P.M. Grant   +3 more
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 Memon
openaire   +1 more source

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.
B. R. Hamilton, X. Ma
openaire   +1 more source

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.
openaire   +1 more source

Cooperative Diversity with Coordinate Interleaving

2007 IEEE 15th Signal Processing and Communications Applications, 2007
In this paper, a two-user cooperative diversity scheme is proposed where the coded cooperation is performed with coordinate interleaving suitably to rate compatible punctured coding (RCPC) technique. Users perform selective cooperation in transmission, according to the correctness of the estimated symbols from their partners.
Ozgur Oruc, Umit Aygolu
openaire   +1 more source