Cooperative Communication Techniques for Spectrum Sharing

2020 ◽  
pp. 147-167
Author(s):  
Faheem Khan ◽  
Miltiades C. Filippou ◽  
Mathini Sellathurai
Keyword(s):  
Cooperative Communication ◽  
Spectrum Sharing ◽  
Communication Techniques

Geographic information-based Data Transmission and Cooperative Communication for Vehicular Networks

2020 ◽  
Vol 1 (1) ◽  
pp. 27-34
Author(s):  
Abdul Rahim ◽  
Dr. V.A.Sankar Ponnapalli
Keyword(s):  
Energy Consumption ◽  
Cooperative Communication ◽  
Vehicular Networks ◽  
Data Communication ◽  
Vehicular Network ◽  
Vehicular Communication ◽  
Automobile Engineering ◽  
Communication Techniques ◽  
Close Relationship ◽  
Transmission Energy Consumption

With the advancements in Vehicular communication technologies in automobile engineering leads to enhancement of modern societies by utilizing Internet based data communication in a vehicular network to effectively avoid accidents and traffic congestions using Multi Input Multi Output (MIMO) cooperative relay technique for enhancing the aspects of performance by reduction of transmission energy consumption by taking the advantage of spatial and temporal diversity gain in a vehicular network as the conventional routing based on topology is merely not suitable over a dynamic vehicular network environment as GPS is used to identify effective route [4].In this paper we propose applications of cooperative communication techniques and their survey for identifying close relationship between forwarding and addressing techniques in a vehicular network and further we compare performance and energy consumption of cooperative techniques with the traditional multi-hop technique over Rayleigh channel using MQAM for optimization.

scholarly journals Anti-Wiretap Spectrum-Sharing for Cooperative Cognitive Radio Communication Systems

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4142
Author(s):  
Peiyuan Si ◽  
Weidang Lu ◽  
Kecai Gu ◽  
Xin Liu ◽  
Bo Li ◽  
...  
Keyword(s):  
Cognitive Radio ◽  
Wireless Communication ◽  
Cooperative Communication ◽  
Communication Systems ◽  
Spectrum Sharing ◽  
Transmission Rate ◽  
Primary System ◽  
Radio Communication ◽  
Sharing Scheme ◽  
Simulation Results

As wireless communication technology keeps progressing, people’s requirements for wireless communication quality are getting higher and higher. Wireless communication brings convenience, but also causes some problems. On the one hand, the traditional static and fixed spectrum allocation strategy leads to high wastefulness of spectrum resources. The direction of improving the utility of spectrum resources by combining the advantages of cooperative communication and cognitive radio has attracted the attention of many scholars. On the other hand, security of communication is becoming an important issue because of the broadcasting nature and openness of wireless communication. Physical-layer security has been brought into focus due to the possibility of improving the security in wireless communication. In this paper, we propose an anti-wiretap spectrum-sharing scheme for cooperative cognitive radio communication systems which can secure the information transmission for the two transmission phases of the cooperative communication. We maximized the secondary system transmission rate by jointly optimizing power and bandwidth while ensuring the primary system achieves its secrecy transmission rate. Useful insights of the proposed anti-wiretap spectrum-sharing scheme are given in the simulation results. Moreover, several system parameters are shown to have a big impact for the simulation results.

scholarly journals High Energy Efficient Heterogeneous Networks: Cooperative and Cognitive Techniques

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Heng Wang ◽  
Jiamo Jiang ◽  
Jian Li ◽  
Manzoor Ahmed ◽  
Mugen Peng
Keyword(s):  
Energy Efficiency ◽  
Cognitive Radio ◽  
Cooperative Communication ◽  
High Energy ◽  
Performance Comparison ◽  
System Capacity ◽  
Small Cells ◽  
Communication Techniques ◽  
High Spectral Efficiency ◽  
Efficiency Performance

Heterogeneous network (HetNet) is considered as the main and eminent future communication technology, since it achieves high spectral efficiency per unit area and saves energy due to low transmission power. Mass deployment of small cells in cochannel mode increases overall system capacity, but it is also coupled with greater risk of cochannel interference. This paper overviews the interference model based on the Poisson point process (PPP) and analyzes the performance in terms of energy efficiency in multitier HetNet. As the promising solution for improving the performance of HetNet, both the cooperative communication and cognitive radio techniques to mitigate the interference in HetNet are surveyed. As one example of cooperative communication techniques, a hierarchical cooperation scheme on the spectrum allocation is presented and its energy efficiency performance is analyzed and evaluated. Meanwhile, the energy efficiency increases from the cognitive radio technique are demonstrated as well. The energy efficiency performance comparison between the presented cooperative communication and cognitive radio techniques is emphasized, which suggests that the cooperation communication technique is preferred to suppress the interference and increase the energy efficiency in HetNets.

Geographic information-based Data Transmission and Cooperative Communication for Vehicular Networks

2020 ◽  
Vol 1 (1) ◽  
pp. 27-34
Author(s):  
Abdul Rahim ◽  
Dr. V.A.Sankar Ponnapalli
Keyword(s):  
Energy Consumption ◽  
Cooperative Communication ◽  
Vehicular Networks ◽  
Data Communication ◽  
Vehicular Network ◽  
Vehicular Communication ◽  
Automobile Engineering ◽  
Communication Techniques ◽  
Close Relationship ◽  
Transmission Energy Consumption

With the advancements in Vehicular communication technologies in automobile engineering leads to enhancement of modern societies by utilizing Internet based data communication in a vehicular network to effectively avoid accidents and traffic congestions using Multi Input Multi Output (MIMO) cooperative relay technique for enhancing the aspects of performance by reduction of transmission energy consumption by taking the advantage of spatial and temporal diversity gain in a vehicular network as the conventional routing based on topology is merely not suitable over a dynamic vehicular network environment as GPS is used to identify effective route [4].In this paper we propose applications of cooperative communication techniques and their survey for identifying close relationship between forwarding and addressing techniques in a vehicular network and further we compare performance and energy consumption of cooperative techniques with the traditional multi-hop technique over Rayleigh channel using MQAM for optimization.

scholarly journals An Optimized Relay Selection Technique to Improve the Communication Reliability in Wireless Sensor Networks

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3263 ◽  
Author(s):  
Suelen Laurindo ◽  
Ricardo Moraes ◽  
Ríad Nassiffe ◽  
Carlos Montez ◽  
Francisco Vasques
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Cooperative Communication ◽  
Relay Selection ◽  
Wireless Sensor ◽  
Relay Nodes ◽  
Selection Technique ◽  
Communication Techniques ◽  
Communication Reliability ◽  
The Internet Of Things

Wireless Sensor Networks (WSN) are enabler technologies for the implementation of the Internet of Things (IoT) concept. WSNs provide an adequate infrastructure for the last-link communication with smart objects. Nevertheless, the wireless communication medium being inherently unreliable, there is the need to increase its communication reliability. Techniques based on the use of cooperative communication concepts are one of the ways to achieve this target. Within cooperative communication techniques, nodes selected as relays transmit not only their own data, but also cooperate by retransmitting data from other nodes. A fundamental step to improve the communication reliability of WSNs is related to the use of efficient relay selection techniques. This paper proposes a relay selection technique based on multiple criteria to select the smallest number of relay nodes and, at the same time, to ensure an adequate operation of the network. Additionally, two relay updating schemes are also investigated, defining periodic and adaptive updating policies. The simulation results show that both proposed schemes, named Periodic Relay Selection and Adaptive Relay Selection, significantly improve the communication reliability of the network, when compared to other state-of-the-art relay selection schemes.

Sign in / Sign up

Export Citation Format

Share Document