Results 211 to 220 of about 19,030 (244)
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Adaptive Cooperative Coding in Wireless Networks
VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008The cooperative transmission is an efficient way in the wireless network which benefits from the spacial diversity. In this paper, we introduce and analyze a novel three-node relay protocol with high transmit efficiency, termed as the Adaptive Cooperative Coding (ACC).
Li Li +4 more
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A network coding approach to cooperative diversity
IEEE Transactions on Information Theory, 2007This paper proposes a network coding approach to cooperative diversity featuring the algebraic superposition of channel codes over a finite field. The scenario under consideration is one in which two ldquopartnersrdquo - node A and node B - cooperate in transmitting information to a single destination; each partner transmits both locally generated ...
Lei Xiao +3 more
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User Cooperation Through Network Coding
2007 IEEE International Conference on Communications, 2007Most user cooperation protocols work in a timesharing manner, where each user transmits its own message and relays for the other at different segments of a time slot. We develop a new scheme to send these messages simultaneously using network coding.
Meng Yu 0002 +2 more
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Adaptive Coded Cooperation in Wireless Networks
2008 International Wireless Communications and Mobile Computing Conference, 2008User cooperation enables single antenna terminals to benefit from spatial diversity by partnering with other users to create a virtual transmit antenna array. A promising form of cooperation is called coded cooperation which integrates cooperation with channel coding, showing great performance gains.
Faisal Alazem +2 more
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Network Coding Based on Product Codes in Cooperative Relaying
2010 IEEE Wireless Communication and Networking Conference, 2010Employing network coding at the relay in cooperative relay system can improve the system throughput. However, XOR based network coding does not provide a strong error correction capability that can be used at the base station (receiver) in decoding the information of the cooperating users.
Tafzeel ur Rehman Ahsin +1 more
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Threshold-Based Relaying in Coded Cooperative Networks
IEEE Transactions on Vehicular Technology, 2011In cooperative communications, error propagation at the relay nodes degrades the diversity order of the system. To combat that effect, we present a novel technique to control error propagation at the relays, which is implemented in the context of a distributed turbo code.
Ghaleb Al-Habian +3 more
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Strategies and Tradeoffs for Coded Cooperation in Wireless Networks
2007 5th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks and Workshops, 2007In a wireless network, fading significantly affects the performance, and diversity techniques are used to overcome this issue. Cooperation among nodes provides spatial diversity by means of packet relaying. In coded cooperation, diversity is further enhanced since cooperating nodes transmit different parts of a coded packet on different channels.
LEVORATO, MARCO +2 more
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A Novel Network-Coding-Based Coded Cooperation Scheme
2009 IEEE Wireless Communications and Networking Conference, 2009Coded Cooperation (CC) is a promising user co-operation scheme. In this paper, we propose a novel networ-kcoding-based coded cooperation scheme. When a user decodes its partner's information correctly in the first frame, it transmits the combination of the partner's parity bits and its own parity bits through network coding in the second frame. This is
Suwen Wu, Jinkang Zhu, Ming Zhao 0008
exaly +3 more sources
On Relay Assignment in Network-Coded Cooperative Systems
IEEE Transactions on Wireless Communications, 2011We consider in this paper relay assignment for cooperative systems with multiple two-way relay channels. The nodes corresponding to one two-way relay channel (henceforth referred to as pair) communicate with each other through a relay. The relays use network coding to simultaneously transmit the signals corresponding to the pairs they are assigned to ...
Xuehua Zhang +2 more
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Cooperative space-time coding for wireless networks
Proceedings 2003 IEEE Information Theory Workshop (Cat. No.03EX674), 2004We consider a cooperative system in which the partnering mobiles are equipped with multiple antennas. We present space-time codes that have the capability of providing full cooperation diversity, while achieving maximum possible diversity and best performance in the inter-user channel.
Andrej Stefanov, Elza Erkip
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