Spectral Efficiency of Centralized and Decentralized Cooperative Networks with Relay Selection

2013 ◽  
Author(s):  
Hao Feng ◽  
Yao Xiao ◽  
Leonard J. Cimini
Keyword(s):  
Spectral Efficiency ◽  
Relay Selection ◽  
Cooperative Networks

scholarly journals A Survey on Relay Selection in Cooperative Device-to-Device (D2D) Communication in 5G Cellular Networks

2017 ◽  
Author(s):  
Shamganth K ◽  
Said Shafi Abdullah Al-Shabibia
Keyword(s):  
Cellular Networks ◽  
Spectral Efficiency ◽  
Relay Selection ◽  
Relay Node ◽  
Cooperative Networks ◽  
Vital Role ◽  
D2d Communication ◽  
Destination Node ◽  
D2d Communications ◽  
Device To Device

Device-to-device (D2D) communications underlayed to a cellular infrastructure has recently been proposed to increase spectrum and energy efficiency. Relay selection plays a vital role in cooperative networks. In D2D communication, if the chosen relay is not the best relay, then the whole communication will not be successful from source node to destination node. Also to choose the optimal relays, if more feedback and time delay exists between the source nodes and relay node then it leads to degradation of spectral efficiency.  A survey on the relay selection techniques used with D2D communications and the challenges and design issues associated with the integration of D2D in 5G cellular network is presented.

scholarly journals Joint Next-Hop/Relay Selection for Distributive Multihop Cooperative Networks

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Ahmed Alkhayyat
Keyword(s):  
Spectral Efficiency ◽  
Relay Selection ◽  
Relay Node ◽  
Cooperative Networks ◽  
Channel Fading ◽  
Relay Nodes ◽  
Effective Technique ◽  
Node Selection ◽  
Relay Node Selection ◽  
Selection For

Cooperative networks that use adjacent nodes to relay hearing data are employed as an effective technique to deal with channel fading, thereby enhancing the network performances. Next-hop and relay nodes selection schemes determine the optimal next-hop node toward the destination and relay node between the source and the optimal next-hop and/or destination. Offering joint next-hop and relay node selection in distributive multihop cooperative networks will enable the source to select the optimal next-hop node and relay node that can improve the system performance. In this paper, we propose a joint next-hop node and relay node selection (JNRS) protocol for wireless distributive multihop cooperative networks. The goal of JNRS is to reduce the spectral efficiency loss and outage probability. Analysis results show that JNRS can enhance the cooperative networks performance under general conditions compared to cooperative networks without the JNRS protocol.

Optimal Energy to Spectral-Efficiency Trade-off in Cooperative Networks

2015 ◽  
Vol 82 (3) ◽  
pp. 1547-1566 ◽  
Author(s):  
Chunguo Li ◽  
Wei-Ping Zhu ◽  
Luxi Yang
Keyword(s):  
Spectral Efficiency ◽  
Cooperative Networks ◽  
Trade Off ◽  
Optimal Energy
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