Results 201 to 210 of about 17,667 (246)

Network-Coded Cooperation With Outdated CSI

IEEE Communications Letters, 2018
The impact of outdated channel state information (CSI) on the performance of multiple-source, multiple-relay network-coded cooperation (NCC) with relay selection (RS) is investigated. In RS-based NCC, $K$ relays are selected (from $M$ cooperative relays).
Ali Reza Heidarpour, , Chintha Tellambura   +2 more
exaly   +2 more sources

Cooperative coding for wireless networks

4th International Workshop on Mobile and Wireless Communications Network, 2003
User-cooperation represents an effective way of introducing diversity in wireless networks. Spatial diversity gains are obtained through the cooperation of mobile users and the use of the partner's antenna. In this paper, we design channel codes that are capable of achieving the full diversity provided by user-cooperation, with the constraint that they
Andrej Stefanov, Elza Erkip
openaire   +1 more source

Network coding in cooperative relay networks

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008
Network coding is seen as a promising technique to improve network throughput. In this paper, network coding in cooperative relay networks and user cooperative networks is investigated and an optimized power allocation scheme is provided. By comparing with traditional relay forwarding in a simple two-user scenario, network coding shows a better system ...
Yuexin Wang, Chunjing Hu, Hongmei Liu 0006, Mugen Peng, Wenbo Wang 0007   +4 more
openaire   +1 more source

On the Overhead of Telescopic Codes in Network Coded Cooperation

2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall), 2015
Although Random Linear Network Coding (RLNC) has been shown to reduce the number of transmissions for multi-cast scenarios, there is an inherent signaling overhead to achieve this benefit. Employing a large field result in less transmissions but at the cost of a large coding vector of coefficients.
Néstor J. Hernández Marcano, Janus Heide, Daniel Enrique Lucani, Frank H. P. Fitzek   +3 more
openaire   +1 more source

Network-Coded Cooperative Systems in Cognitive Radio Networks

IEEE Transactions on Wireless Communications, 2022
We study the performance of a network-coded cooperative (NCC) system in an underlay cognitive radio network (CRN). The primary network (PN) consists of a single transmitter-receiver pair, and the secondary network (SN) is an NCC system with $N$ users, $M$ relays, and a single destination.
Ali Reza Heidarpour, Masoud Ardakani, Chintha Tellambura, Murat Uysal   +3 more
openaire   +1 more source

Network coded noncoherent cooperative communications

2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014
In recent years, network coding has received significant attention as an innovative approach that improves the spectral efficiency of wireless communication systems. The Multiple Access Relay Channel (MARC) where multiple users communicate with a common destination via a relay, is one of the important network coding applications in wireless cooperative
Muhammet Ali Karabulut, Haci Ilhan, Özgür Özdemir   +2 more
openaire   +3 more sources

Cooperative Channelization in Wireless Networks with Network Coding

IEEE Transactions on Parallel and Distributed Systems, 2011
In this paper, we address congestion of multicast traffic in multihop wireless networks through a combination of network coding and resource reservation. Network coding reduces the number of transmissions required in multicast flows, thus allowing a network to approach its multicast capacity.
Raju Kumar, Thomas La Porta
openaire   +1 more source

Superposition network coded cooperation for wireless networks

Transactions on Emerging Telecommunications Technologies, 2016
AbstractCooperative diversity is an innovative approach to improve the reliability of communication. Although this technique is considered in the next‐generation mobile communication standards, it has its own challenges in practice. For example, in simultaneous transmission‐based cooperative protocols, perfect synchronisation of nodes is very hard to ...
Ali Fazeli, Mohammad Javad Omidi, Hamid Saeedi-Sourck, Masoud Ardakani   +3 more
openaire   +1 more source

Opportunistic Network-Coded Cooperation in Wireless Networks

2007 IEEE Wireless Communications and Networking Conference, 2007
This paper proposed an opportunistic network-coded cooperation (ONCC) scheme suitable for multiple unicast transmission pairs in a single-cell wireless network. In contrast to existing work related to network-coded cooperation where the relay always performs network-coding-and-forwarding to help those transmitting terminals, ONCC is opportunistic ...
Cong Peng 0007, Qian Zhang 0001, Ming Zhao 0001, Yan Yao 0002   +3 more
openaire   +1 more source

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
openaire   +2 more sources