OFDM-Based Common Control Channel Design for Cognitive Radio Ad Hoc Networks
Cognitive radio (CR) technology allows devices to opportunistically use the vacant portions of the licensed wireless spectrum. However, the available spectrum changes dynamically with the primary user (PU) activity, necessitating frequent PU sensing coordination and exchanging network topology infor...
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| Veröffentlicht in: | IEEE transactions on mobile computing 2011-02, Vol.10 (2), p.228-238 |
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| creator | Chowdhury, K R Akyldiz, I F |
| description | Cognitive radio (CR) technology allows devices to opportunistically use the vacant portions of the licensed wireless spectrum. However, the available spectrum changes dynamically with the primary user (PU) activity, necessitating frequent PU sensing coordination and exchanging network topology information in a multihop CR ad hoc network. To facilitate these tasks, an always-on, out-of-band common control channel (CCC) design is proposed that uses noncontiguous OFDM subcarriers placed within the guard bands separating the channels of the licensed spectrum. First, the task of choosing the OFDM-specific parameters, including the number, power, and bandwidth of the subcarriers is formulated as a feasibility problem to ensure that the CCC does not adversely interfere with the PU operation. Second, for unicast messaging between a given pair of users, a subset of the guard bands may be chosen, which allows an additional measure of protection for the adjacent PU spectrum. For this, the multiarm bandit algorithm is used that allows the guard band selection to evolve over time based on the observed interference from the PU. Results reveal that our proposed CCC ensures connectivity and improved PU protection with a limited trade-off in data rate when compared to frequency-hopping and cluster-based CCC schemes. |
| doi_str_mv | 10.1109/TMC.2010.160 |
| format | Magazinearticle |
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However, the available spectrum changes dynamically with the primary user (PU) activity, necessitating frequent PU sensing coordination and exchanging network topology information in a multihop CR ad hoc network. To facilitate these tasks, an always-on, out-of-band common control channel (CCC) design is proposed that uses noncontiguous OFDM subcarriers placed within the guard bands separating the channels of the licensed spectrum. First, the task of choosing the OFDM-specific parameters, including the number, power, and bandwidth of the subcarriers is formulated as a feasibility problem to ensure that the CCC does not adversely interfere with the PU operation. Second, for unicast messaging between a given pair of users, a subset of the guard bands may be chosen, which allows an additional measure of protection for the adjacent PU spectrum. For this, the multiarm bandit algorithm is used that allows the guard band selection to evolve over time based on the observed interference from the PU. Results reveal that our proposed CCC ensures connectivity and improved PU protection with a limited trade-off in data rate when compared to frequency-hopping and cluster-based CCC schemes.</description><identifier>ISSN: 1536-1233</identifier><identifier>EISSN: 1558-0660</identifier><identifier>DOI: 10.1109/TMC.2010.160</identifier><identifier>CODEN: ITMCCJ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Ad hoc networks ; Applied sciences ; Availability ; Band spectra ; Bands ; Bandwidth ; Business and industry local networks ; Channels ; Chromium ; cognitive radio ; control channel ; Exact sciences and technology ; feasibility ; Guards ; Interference ; Networks ; Networks and services in france and abroad ; OFDM ; Organization and planning of networks (techniques and equipments) ; Orthogonal Frequency Division Multiplexing ; Polyurethane resins ; Radio ; Radiocommunication specific techniques ; Radiocommunications ; Radios ; Sensors ; Studies ; Subcarriers ; Switching and signalling ; Systems, networks and services of telecommunications ; Tasks ; Telecommunications ; Telecommunications and information theory ; Teleprocessing networks. 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However, the available spectrum changes dynamically with the primary user (PU) activity, necessitating frequent PU sensing coordination and exchanging network topology information in a multihop CR ad hoc network. To facilitate these tasks, an always-on, out-of-band common control channel (CCC) design is proposed that uses noncontiguous OFDM subcarriers placed within the guard bands separating the channels of the licensed spectrum. First, the task of choosing the OFDM-specific parameters, including the number, power, and bandwidth of the subcarriers is formulated as a feasibility problem to ensure that the CCC does not adversely interfere with the PU operation. Second, for unicast messaging between a given pair of users, a subset of the guard bands may be chosen, which allows an additional measure of protection for the adjacent PU spectrum. 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Results reveal that our proposed CCC ensures connectivity and improved PU protection with a limited trade-off in data rate when compared to frequency-hopping and cluster-based CCC schemes.</description><subject>Ad hoc networks</subject><subject>Applied sciences</subject><subject>Availability</subject><subject>Band spectra</subject><subject>Bands</subject><subject>Bandwidth</subject><subject>Business and industry local networks</subject><subject>Channels</subject><subject>Chromium</subject><subject>cognitive radio</subject><subject>control channel</subject><subject>Exact sciences and technology</subject><subject>feasibility</subject><subject>Guards</subject><subject>Interference</subject><subject>Networks</subject><subject>Networks and services in france and abroad</subject><subject>OFDM</subject><subject>Organization and planning of networks (techniques and equipments)</subject><subject>Orthogonal Frequency Division Multiplexing</subject><subject>Polyurethane resins</subject><subject>Radio</subject><subject>Radiocommunication specific techniques</subject><subject>Radiocommunications</subject><subject>Radios</subject><subject>Sensors</subject><subject>Studies</subject><subject>Subcarriers</subject><subject>Switching and signalling</subject><subject>Systems, networks and services of telecommunications</subject><subject>Tasks</subject><subject>Telecommunications</subject><subject>Telecommunications and information theory</subject><subject>Teleprocessing networks. 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Isdn</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chowdhury, K R</creatorcontrib><creatorcontrib>Akyldiz, I F</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on mobile computing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Chowdhury, K R</au><au>Akyldiz, I F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>OFDM-Based Common Control Channel Design for Cognitive Radio Ad Hoc Networks</atitle><jtitle>IEEE transactions on mobile computing</jtitle><stitle>TMC</stitle><date>2011-02-01</date><risdate>2011</risdate><volume>10</volume><issue>2</issue><spage>228</spage><epage>238</epage><pages>228-238</pages><issn>1536-1233</issn><eissn>1558-0660</eissn><coden>ITMCCJ</coden><abstract>Cognitive radio (CR) technology allows devices to opportunistically use the vacant portions of the licensed wireless spectrum. However, the available spectrum changes dynamically with the primary user (PU) activity, necessitating frequent PU sensing coordination and exchanging network topology information in a multihop CR ad hoc network. To facilitate these tasks, an always-on, out-of-band common control channel (CCC) design is proposed that uses noncontiguous OFDM subcarriers placed within the guard bands separating the channels of the licensed spectrum. First, the task of choosing the OFDM-specific parameters, including the number, power, and bandwidth of the subcarriers is formulated as a feasibility problem to ensure that the CCC does not adversely interfere with the PU operation. Second, for unicast messaging between a given pair of users, a subset of the guard bands may be chosen, which allows an additional measure of protection for the adjacent PU spectrum. For this, the multiarm bandit algorithm is used that allows the guard band selection to evolve over time based on the observed interference from the PU. Results reveal that our proposed CCC ensures connectivity and improved PU protection with a limited trade-off in data rate when compared to frequency-hopping and cluster-based CCC schemes.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMC.2010.160</doi><tpages>11</tpages></addata></record> |
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| subjects | Ad hoc networks Applied sciences Availability Band spectra Bands Bandwidth Business and industry local networks Channels Chromium cognitive radio control channel Exact sciences and technology feasibility Guards Interference Networks Networks and services in france and abroad OFDM Organization and planning of networks (techniques and equipments) Orthogonal Frequency Division Multiplexing Polyurethane resins Radio Radiocommunication specific techniques Radiocommunications Radios Sensors Studies Subcarriers Switching and signalling Systems, networks and services of telecommunications Tasks Telecommunications Telecommunications and information theory Teleprocessing networks. Isdn |
| title | OFDM-Based Common Control Channel Design for Cognitive Radio Ad Hoc Networks |
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