Insoo KOO


Optimizing Sensing Scheduling for Cooperative Spectrum Sensing in Cognitive Radio Networks
Tran-Nhut-Khai HOAN Vu-Van HIEP Insoo KOO 
Publication:   
Publication Date: 2017/05/01
Vol. E100-B  No. 5  pp. 884-892
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
cognitive radiosequential cooperative spectrum sensingthroughputoptimal sensing schedule
 Summary | Full Text:PDF(787.4KB)

Efficient Selection of Users' Pair in Cognitive Radio Network to Maximize Throughput Using Simultaneous Transmit-Sense Approach
Muhammad Sajjad KHAN Muhammad USMAN Vu-Van HIEP Insoo KOO 
Publication:   
Publication Date: 2017/02/01
Vol. E100-B  No. 2  pp. 380-389
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
energy efficient CR pair selectionspectrum sensingsimultenous transmit-sensethroughput
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Energy-Efficient and Throughput Maximization Scheme for Sensor-Aided Cognitive Radio Networks
Hiep VU-VAN Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/10/01
Vol. E98-B  No. 10  pp. 1996-2003
Type of Manuscript:  Special Section PAPER (Special Section on 5G Radio Access Networks―Part II: Multi-RAT Heterogeneous Networks and Smart Radio Technologies)
Category: 
Keyword: 
cognitive radioenergy harvestingPOMDPthroughput maximizationenergy-efficiency
 Summary | Full Text:PDF(1MB)

Optimal Reporting Order for Superposition Cooperative Spectrum Sensing in Cognitive Radio Networks
Hiep VU-VAN Insoo KOO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/06/01
Vol. E98-A  No. 6  pp. 1346-1350
Type of Manuscript:  LETTER
Category: Mobile Information Network and Personal Communications
Keyword: 
cognitive radiosuperposition cooperative spectrum sensingreporting ordersensing performance
 Summary | Full Text:PDF(654.5KB)

Distortion-Aware Dynamic Channel Allocation for Multimedia Users in Cognitive Radios
Thanh-Tung NGUYEN Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/12/01
Vol. E97-B  No. 12  pp. 2790-2799
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
cognitive radio networkchannel allocationmultimediadistortionnegotiation
 Summary | Full Text:PDF(3.6MB)

A Robust Cooperative Spectrum Sensing Based on Kullback-Leibler Divergence
Hiep VU-VAN Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/04/01
Vol. E95-B  No. 4  pp. 1286-1290
Type of Manuscript:  Special Section LETTER (Special Section on Cognitive Radio and Heterogeneous Wireless Networks in Conjunction with Main Topics of CrownCom2011)
Category: 
Keyword: 
cognitive radiodata combination rulemalicious suppressionKL-divergence
 Summary | Full Text:PDF(448.7KB)

An Adaptive Cooperative Spectrum Sensing Scheme Using Reinforcement Learning for Cognitive Radio Sensor Networks
Thuc KIEU-XUAN Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/05/01
Vol. E94-B  No. 5  pp. 1456-1459
Type of Manuscript:  LETTER
Category: Network
Keyword: 
cognitive radio sensor networkcooperative spectrum sensingdecision fusionreinforcement learning
 Summary | Full Text:PDF(347.3KB)

An Efficient Ordered Sequential Cooperative Spectrum Sensing Scheme Based on Evidence Theory in Cognitive Radio
Nhan NGUYEN-THANH Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/12/01
Vol. E93-B  No. 12  pp. 3248-3257
Type of Manuscript:  Special Section PAPER (Special Section on Wireless Distributed Networks)
Category: 
Keyword: 
cognitive radiocooperative spectrum sensingdata fusionDempter-Shafer theory of evidencesequential fusionordered sequential fusion
 Summary | Full Text:PDF(1.5MB)

A Censor-Based Cooperative Spectrum Sensing Scheme Using Fuzzy Logic for Cognitive Radio Sensor Networks
Thuc KIEU-XUAN Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/12/01
Vol. E93-B  No. 12  pp. 3497-3500
Type of Manuscript:  Special Section LETTER (Special Section on Wireless Distributed Networks)
Category: 
Keyword: 
wireless sensor networkcognitive radiocooperative spectrum sensingfuzzy systemdata fusion
 Summary | Full Text:PDF(238.4KB)

An Efficient Weight-Based Cooperative Spectrum Sensing Scheme in Cognitive Radio Systems
Thuc KIEU-XUAN Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/08/01
Vol. E93-B  No. 8  pp. 2191-2194
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
cognitive radiocooperative spectrum sensingdecision fusion
 Summary | Full Text:PDF(273.2KB)

A Robust Secure Cooperative Spectrum Sensing Scheme Based on Evidence Theory and Robust Statistics in Cognitive Radio
Nhan NGUYEN-THANH Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/12/01
Vol. E92-B  No. 12  pp. 3644-3652
Type of Manuscript:  Special Section PAPER (Special Section on Dynamic Spectrum Access)
Category: Spectrum Sensing
Keyword: 
cognitive radiospectrum sensingcooperativesecuritymalicious userrobust statistics
 Summary | Full Text:PDF(757.9KB)

An Efficient RSS-Based Localization Scheme with Calibration in Wireless Sensor Networks
Cong TRAN-XUAN Eunchan KIM Insoo KOO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/12/01
Vol. E91-B  No. 12  pp. 4013-4016
Type of Manuscript:  LETTER
Category: Network
Keyword: 
wireless sensor networksangle-referred calibrationreceived signal strengthlateration
 Summary | Full Text:PDF(89.1KB)

Type-Based Detection with a Fusion Center Performing the Sequential Test in Wireless Sensor Networks
Dmitry KRAMAREV Insoo KOO Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/12/01
Vol. E90-B  No. 12  pp. 3354-3361
Type of Manuscript:  Special Section PAPER (Special Section on Ubiquitous Sensor Networks)
Category: 
Keyword: 
decentralized detectionsequential testmethod of typesGaussian approximationwireless sensor networks
 Summary | Full Text:PDF(306KB)

Delay Distribution of Data Calls in Integrated Voice/Data CDMA Systems
Insoo KOO Jeongrok YANG Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/03/01
Vol. E90-B  No. 3  pp. 668-671
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
CDMA systemsvoice/datadelay distribution
 Summary | Full Text:PDF(180.2KB)

Erlang Capacity of Multi-Service Multi-Access Systems with a Limited Number of Channel Elements According to Separate and Common Operations
Insoo KOO Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/11/01
Vol. E89-B  No. 11  pp. 3065-3074
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multi-access systemsmulti-class servicesoperation methodsErlang capacity
 Summary | Full Text:PDF(6.7MB)

Performance of Cellular CDMA Systems Using SBF and TBF Array Antennas under Multi-Cell Environment
Hyunduk KANG Insoo KOO Vladimir KATKOVNIK Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/12/01
Vol. E87-A  No. 12  pp. 3447-3451
Type of Manuscript:  LETTER
Category: Spread Spectrum Technologies and Applications
Keyword: 
bit-error-rateoutage probabilitylink capacityCDMAarray antennas
 Summary | Full Text:PDF(319.4KB)

Dynamic Resource Allocation Scheme in Multi-Service CDMA Systems
Jeongrok YANG Insoo KOO Yeongyoon CHOI Youngil KIM Jeehwan AHN Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/09/01
Vol. E87-B  No. 9  pp. 2634-2637
Type of Manuscript:  Special Section LETTER (Special Section on Networking Technologies for Mobile Internet Systems)
Category: Resource Management
Keyword: 
CDMAresource allocation schemeVBR and CBR traffic
 Summary | Full Text:PDF(254.1KB)

Capacity of CDMA Systems Supporting Heterogeneous Traffic with Binomial Random ON/OFF Activity
Jeongrok YANG Insoo KOO Yeongyoon CHOI Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/07/01
Vol. E86-B  No. 7  pp. 2087-2093
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
CDMAQoScapacityon/off activity
 Summary | Full Text:PDF(540.2KB)

Performance Analysis of CDMA Systems with Adaptive Modulation Scheme
Insoo KOO Youngkou LEE Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 79-87
Type of Manuscript:  Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
CDMAadaptive modulationBPS and BER performances
 Summary | Full Text:PDF(1.3MB)

Two Traffic Parameters Efficiently to Approximate the Call Blocking Probability in CDMA Systems with 3 Sectors
Insoo KOO Jeongrok YANG Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/04/01
Vol. E85-B  No. 4  pp. 849-853
Type of Manuscript:  LETTER
Category: Network
Keyword: 
CDMAcall blocking probabilityErlang capacityapproximate analysis method
 Summary | Full Text:PDF(231.2KB)

Erlang Capacity of Voice/Data DS-CDMA Systems with Prioritized Services
Insoo KOO Eunchan KIM Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/04/01
Vol. E84-B  No. 4  pp. 716-726
Type of Manuscript:  Special Section PAPER (Special Issue on Mobile Multimedia Communications)
Category: 
Keyword: 
voice/dataDS-CDMAcall admission controlErlang capacity
 Summary | Full Text:PDF(1.3MB)

Analysis of Erlang Capacity for Voice/Data DS-CDMA Systems with the Limited Number of Channel Elements
Insoo KOO Jeongrok YANG Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 527-538
Type of Manuscript:  Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
Erlang capacityvoice/dataIS-95BDS-CDMA
 Summary | Full Text:PDF(389.7KB)

Analysis of Erlang Capacity for the Multimedia DS-CDMA Systems with the Limited Number of Channel Elements
Insoo KOO JeongRok YANG Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/12/25
Vol. E83-B  No. 12  pp. 2717-2722
Type of Manuscript:  LETTER
Category: Terrestrial Radio Communications
Keyword: 
Erlang capacitymultimediaDS-CDMAchannel element
 Summary | Full Text:PDF(339.3KB)

Sensitivity of the System Capacity with Respect to the System Reliability in a DS-CDMA Cellular System
Insoo KOO Gwangzeen KO Yeongyoon CHOI Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/03/25
Vol. E83-B  No. 3  pp. 742-745
Type of Manuscript:  LETTER
Category: Mobile Communication
Keyword: 
DS-CDMAsystem capacitythe system reliability and sensitivity
 Summary | Full Text:PDF(176.4KB)

Analysis of Erlang Capacity for the Multimedia DS-CDMA Systems
Insoo KOO JeeHwan AHN Jeong-A LEE Kiseon KIM 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/05/25
Vol. E82-A  No. 5  pp. 849-855
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
DS/CDMAErlang capacitymultimedia
 Summary | Full Text:PDF(761.9KB)