Cognitive radios for dynamic spectrum access: from concept to reality

Shin, Kang G.; Kim, Hyoil; Min, Alexander W.; Kumar, Ashwini

doi:10.1109/mwc.2010.5675780

Cited by 164 publications

(63 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…위한 핵심 원천 기술도 활발하게 연구 개발되고 있다 [5][6][7][8][9] . 특히, 방송대역에서 TV 방송을 위해 분배된 주파 수 중에서 현재 지역적으로 사용하지 않고 비어 있는 주파수 대역인 TVWS (TV White Space: TV 화이트 스페이스)의 효율적인 활용을 위한 정책, 표준화 및 기술기준 마련 등이 미국, 영국, EU 등을 중심으로 전 세계적으로 활발히 전개되고 있다 [10][11][12] .…”

Section: 자원의 확보를 위한 유연한 주파수 이용 및 공유를 위 한 기술기준 간섭 분석·관리 등 스펙트럼 이용 정책 unclassified

CR Technology and Activation Plan for White Space Utilization

Yoo

Kang

Jung

et al. 2014

The Journal of Korea Information and Communications Society

View full text Add to dashboard Cite

Key Words : CR, TVWS, geo-location database, wideband compressive spectrum sensing, database regulations ABSTRACT Cognitive radio (CR) technology based on geo-location database access approach and/or wideband spectrum sensing approach is absolutely vital in order to recognize available frequency bands in white spaces (WSs), and efficiently utilize shared spectrums. This paper presents a new structure for the TVWS database access protocol implementation based on Internet Engineering Task Force (IETF) Protocol to Access WS database (PAWS). A wideband compressive spectrum sensing (WCSS) scheme using a modulated wideband converter is also proposed for the TVWS utilization. The developed database access protocol technology which is adopted in both the TV band device (TVBD) and the TVWS database operates well in the TV frequency bands. The proposed WCSS shows a stable performance in false alarm probability irrespective of noise variance estimation error as well as provides signal detection probabilities greater than 95%. This paper also investigates Federal Communications Commision (FCC) regulatory requirements of TVWS database as well as European Telecommunications StandardsInstitute (ETSI) policy related to TVWS database. A standardized protocol to achieve interoperability among multiple TVBDs and TVWS databases, which is currently prepared in the IETF, is discussed.

show abstract

Section: 자원의 확보를 위한 유연한 주파수 이용 및 공유를 위 한 기술기준 간섭 분석·관리 등 스펙트럼 이용 정책 unclassified

CR Technology and Activation Plan for White Space Utilization

Yoo

Kang

Jung

et al. 2014

The Journal of Korea Information and Communications Society

View full text Add to dashboard Cite

show abstract

“…This new model requires the development of Cognitive Radio (CR) devices that are able to access the primary bands without causing any harmful interference to Primary Users (PUs). Several such schemes have been suggested, which can be classified as Interweave, Underlay or Overlay access paradigms [1].…”

Section: Introductionmentioning

confidence: 99%

Secondary User Undercover Cooperative Dynamic Access Protocol for Overlay Cognitive Radio Networks

Masri¹,

S²,

N³

et al. 2017

IJMNCT

View full text Add to dashboard Cite

A secondary cooperative overlay dynamic spectrum access protocol in cognitive radio networks is proposed, allowing secondary users to access the primary system using full power without causing harmful interference to primary users. Moreover, an enhancement in the primary system will be achieved as a result of secondary relaying of primary messages. A detailed description of the protocol is given and illustrated with network scenarios.

show abstract

“…The Cognitive Radio (CR) paradigm has been considered as an innovative solution to mitigate the spectrum scarcity problem by enabling Dynamic Spectrum Access (DSA), designed to conciliate the existing conflicts between the ever-increasing spectrum demand growth and the currently inefficient spectrum utilization [1,2]. The basic idea of DSA is to provide proper solutions that allow sharing the radio spectrum among several radio communication systems for the sake of optimizing the overall spectrum utilization.…”

Section: Introductionmentioning

confidence: 99%

Implementation of Cognitive Radio Networks to evaluate spectrum management strategies in real-time

Raschellà

Umbert

2016

Computer Communications

View full text Add to dashboard Cite

a b s t r a c tThis paper illustrates a Universal Software Radio Peripheral (USRP)-based real-time testbed that is able to evaluate different spectrum management solutions that exploit the Cognitive Radio (CR) paradigm. The main objective of this testbed is to provide an accurate and realistic platform by which the performance of innovative spectrum management solutions for a wide set of scenarios and use cases in the context of Opportunistic Networks (ONs) and Cognitive Radio Networks (CRNs) can be entirely validated and assessed before their implementation in real systems. Real-time platforms are essential to carry out significant studies and to accurately assess the performance of innovative solutions before their implementation in the real world. This work provides a comprehensive description of the testbed, highlighting many interesting implementation details and illustrating its applicability for different studies that rely on the CR paradigm. Then, a particular application in a realistic Digital Home (DH) scenario is also illustrated, which allows demonstrating the effectiveness of the real-time testbed and assessing its practicality in terms of user-perceived end-to-end Quality of Experience (QoE) in a realistic environment.

show abstract

Cognitive radios for dynamic spectrum access: from concept to reality

Cited by 164 publications

References 58 publications

CR Technology and Activation Plan for White Space Utilization

CR Technology and Activation Plan for White Space Utilization

Secondary User Undercover Cooperative Dynamic Access Protocol for Overlay Cognitive Radio Networks

Implementation of Cognitive Radio Networks to evaluate spectrum management strategies in real-time

Contact Info

Product

Resources

About