Results 251 to 260 of about 2,780,357 (337)

Cooperative Diversity Routing

Encyclopedia of Wireless Networks, 2020
openaire   +2 more sources

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.
John M. Shea, Tan F. Wong, Wing-Hin Wong
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Cooperative Diversity with Partially Cooperative Relays

2009 5th International Conference on Wireless Communications, Networking and Mobile Computing, 2009
Wireless relays extend coverage, improve spectral efficiency, and enhance reliability and rates of wireless communication systems. In this work, we introduce a three-hop cooperative system model comparing to conventional dual-hop cooperative systems, assuming all terminals can only share a part of power for cooperation and have only one antenna for ...
Weihua Deng, Xiqi Gao
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Cooperator switch diversity in cooperative networks

PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005., 2005
Cooperative diversity allows single-antenna terminals to explore uplink transmit diversity via antenna sharing. However, the achievable diversity gain is limited by the imperfect source-relay link. In this paper, we propose a cooperator switch diversity scheme to enhance the performance of cooperative networks.
null Le Yang, null Hong-Chuan Yang
openaire   +1 more source

MAC Protocols for Cooperative Diversity in Wireless LANs and Wireless Sensor Networks

IEEE Communications Surveys and Tutorials, 2014
In this paper, we present a survey of cooperative diversity-enabled Medium Access Control (MAC) protocols for Wireless LANs (WLANs) and Wireless Sensor Networks (WSNs).
R. Khan, H. Karl
semanticscholar   +1 more source

Joint cooperation diversity and symbol mapping diversity in cooperative communication systems

2007 International Conference on Communications, Circuits and Systems, 2007
In this paper, we investigate joint cooperation diversity and symbol mapping diversity strategies for cooperative communication systems that employ nonbinary linear modulations such as phase-shift keying (PSK) and quadrature amplitude modulation (QAM). Substantial symbol error rate gains results from designing different symbol mappings for each packet ...
Wei Ji, Bao-yu Zheng, null Cui Jing-wu
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Cooperative Diversity

2008
This chapter discusses capacity bounds and code designs.
Stankovic, V.   +2 more
openaire   +1 more source

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