Centralized and Distributed Optimization of Ad-Hoc Cognitive Radio Network

2009 ◽  
Author(s):  
Yao Ma ◽  
Dong In Kim
Keyword(s):  
Cognitive Radio ◽  
Ad Hoc ◽  
Cognitive Radio Network ◽  
Distributed Optimization ◽  
Radio Network

Distributed Optimization of a Multisubchannel Ad Hoc Cognitive Radio Network

2012 ◽  
Vol 61 (4) ◽  
pp. 1786-1800 ◽  
Author(s):  
Alex Leith ◽  
Dong In Kim ◽  
Mohamed-Slim Alouini ◽  
Zhiqiang Wu
Keyword(s):  
Cognitive Radio ◽  
Ad Hoc ◽  
Cognitive Radio Network ◽  
Distributed Optimization ◽  
Radio Network

Modeling of Software Defined Radio Architecture and Cognitive Radio

2014 ◽  
pp. 127-158 ◽  
Author(s):  
Jyoti Sekhar Banerjee ◽  
Arpita Chakraborty
Keyword(s):  
Cognitive Radio ◽  
Software Defined Radio ◽  
Network Architecture ◽  
Ad Hoc ◽  
Cognitive Radio Network ◽  
Cognitive Radios ◽  
Radio Link ◽  
Radio Network ◽  
Hoc Networks ◽  
Wireless Node

Today's wireless networks are characterized by fixed spectrum assignment policy. The spectral scarcity and the inefficiency in the spectrum usage necessitate new communication paradigms to exploit the existing wireless spectrum, opportunistically. Software Defined Radio (SDR) and Cognitive Radio (CR) are the very paradigms for wireless communication, in which either a network or a wireless node reconfigures its transmission or reception parameters to communicate efficiently, avoiding interference with licensed or unlicensed users. CR adapts itself to the newer environment on the basis of its intelligent sensing and captures the best available spectrum to meet user communication requirements. When the radio link features are extended to the network layer, the cognitive radios form the cognitive radio network. This chapter is focused on software defined radio, its architecture, its limitations, evolution to cognitive radio network, architecture of the CR, and its relevance in wireless and mobile ad-hoc networks.

scholarly journals Architecture design of ad-hoc cognitive radio network

2018 ◽  
Vol 11 (18) ◽  
pp. 1-7
Author(s):  
P. Surendar ◽  
A. Sridevi ◽  
R. Sona ◽  
◽  
◽  
...  
Keyword(s):  
Cognitive Radio ◽  
Ad Hoc ◽  
Cognitive Radio Network ◽  
Architecture Design ◽  
Radio Network

scholarly journals Cognitive radio network in vehicular ad hoc network (VANET): A survey

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Joanne Mun-Yee Lim ◽  
Yoong Choon Chang ◽  
Mohamad Yusoff Alias ◽  
Jonathan Loo
Keyword(s):  
Cognitive Radio ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Cognitive Radio Network ◽  
Vehicular Ad Hoc Network ◽  
Radio Network

Architecture of Cognitive Radio Networks

2013 ◽  
pp. 125-152 ◽  
Author(s):  
Jyoti Sekhar Banerjee ◽  
Arpita Chakraborty ◽  
Koushik Karmakar
Keyword(s):  
Cognitive Radio ◽  
Network Architecture ◽  
Ad Hoc ◽  
Cognitive Radio Network ◽  
Cognitive Radios ◽  
Radio Link ◽  
Radio Network ◽  
Communication Paradigm ◽  
Hoc Networks

Today’s wireless networks are characterized by fixed spectrum assignment policy. The spectral scarcity and the inefficiency in the spectrum usage necessitate a new communication paradigm to exploit the existing wireless spectrum, opportunistically. Cognitive Radio (CR) is that very paradigm for wireless communication, in which either a network or a wireless node reconfigures its transmission or reception parameters to communicate efficiently avoiding interference with licensed or unlicensed users. CR adapts itself to the newer environment on the basis of its intelligent sensing and captures the best available spectrum to meet user communication requirements. When the radio link features are extended to the network layer, the cognitive radios form the cognitive radio network. This book chapter is focused on cognitive radio network, architecture of the CR, and its relevance in the wireless and mobile Ad Hoc networks.

Secure Routing and Scheduling in Ad-Hoc Cognitive Radio Networks for Public Safety

2014 ◽  
Vol 5 (2) ◽  
pp. 44-60 ◽  
Author(s):  
Eric Chan-Tin ◽  
Qi Cheng
Keyword(s):  
Cognitive Radio ◽  
Public Safety ◽  
Ad Hoc ◽  
Cognitive Radio Network ◽  
Secure Routing ◽  
Social Aspect ◽  
Radio Network ◽  
Routing And Scheduling ◽  
Multiple Paths ◽  
Main Components

Public safety communication is a critical component of day-to-day life. The authors propose a flexible and resilient communication system using an ad-hoc cognitive radio network that fully utilizes the available spectrum resources. Two main components of the network are addressed: route discovery, i.e., identifying multiple paths from the source to the destination, and scheduling for these paths, i.e., efficiently allocating available resources to achieve an optimal transmission. Field-based routing is adopted. The authors also introduce a secure authentication and routing mechanism for this network. The authentication component leverages the social aspect of public safety communications and mitigates most basic wireless attacks. A hybrid novel reputation scheme is then proposed to allow for efficient routing in the presence of adversaries. The authors show through simulations that the proposed secure framework can efficiently reduce the transmission delay, be robust to the dynamics of channel availability, and mitigate routing attacks in a cognitive radio network.

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