Kefei Liu

Idiomas

Áreas de atuação

Organização de eventos

Produções bibliográficas

• DA COSTA, JOÃO PAULO C.L. ; Liu, Kefei ; CHEUNG SO, HING ; SCHWARZ, STEFANIE ; HAARDT, MARTIN ; RÖMER, FLORIAN . Multidimensional prewhitening for enhanced signal reconstruction and parameter estimation in colored noise with Kronecker correlation structure. Signal Processing (Print) , v. 93, p. 3209-3226, 2013.

• Liu, Kefei ; DA COSTA, JOÃO PAULO C.L. ; CHEUNG SO, HING ; HUANG, LEI . Subspace techniques for multidimensional model order selection in colored noise. Signal Processing (Print) , v. 93, p. 1976-1987, 2013.

• Liu, Kefei ; SO, HING CHEUNG ; DA COSTA, JOÃO PAULO C.L. ; RÖMER, FLORIAN ; HUANG, LEI . Efficient source enumeration for accurate direction-of-arrival estimation in threshold region. Digital Signal Processing (Print) , v. 23, p. 1668-1677, 2013.

• Liu, Kefei ; DA COSTA, JOÃO PAULO C.L. ; SO, HING CHEUNG ; RÖMER, FLORIAN ; HAARDT, MARTIN ; DE A. GADÊLHA, LUIZ F. . 3-D Unitary ESPRIT: Accurate attitude estimation for unmanned aerial vehicles with a hexagon-shaped ESPAR array. Digital Signal Processing (Print) , v. 23, p. 701-711, 2013.

• Liu, Kefei ; João Paulo C. L. da Costa ; SO, H. C. ; André L. F. de Almeida . Semi-Blind Receivers for Joint Symbol and Channel Estimation in Space-Time-Frequency MIMO-OFDM Systems. IEEE Transactions on Signal Processing , v. PP, p. 1, 2013.

• Liu, Kefei ; YANG, D. ; WU, J. . Simulink Implementation of Frequency-Hopping Communication System. Journal of System Simulation , v. 21, p. 7969-7973, 2009.

• Liu, Kefei ; ZHAO, S. ; Liu, M. Z. . Solution of a Class of Minimal Surface Problem with Obstacle. Journal of Mathematics Research , v. 1, p. 39-45, 2009.

• Hong, Sheng ; Yang, Dongkai ; Liu, Kefei ; He, Xiaoxiang ; Tentzeris, Manos M. . Robust passive beamformer using bridge function sequences as weights. IEICE Electronics Express , v. 6, p. 1192-1198, 2009.

• Yang, D. K. ; Liu, Kefei ; ZHANG, Q. S. . Linear Multi User Detection based on Bridge Function for MC-CDMA System. Journal of Telemetry, Tracking and Command , v. 30, p. 53-59, 2009.

• Walter Freitas Jr. ; André L. F. de Almeida ; João Paulo C. L. da Costa ; Liu, Kefei ; SO, H. C. . Multiantenna Multicarrier Transceiver Architectures. In: Cavalcanti, Francisco Rodrigo Porto. (Org.). Resource Allocation and MIMO for 4G and Beyond. 1ed.: Springer, 2013, v. , p. 101-128.

• Liu, Kefei ; SO, H. C. ; da Costa, J. P. C. L. ; HUANG, L. . Core Consistency Diagnostic Aided by Reconstruction Error for Accurate Enumeration of the Number of Components in PARAFAC models. In: IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, Vancouver. IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013. p. 6635-6639.

• Liu, Kefei ; João Paulo C. L. da Costa ; SO, H. C. ; ROEMER, F. ; HUANG, L. . On the Use of Order Selection Rules for Accurate Parameter Estimation in Threshold Region. In: 21st European Signal Processing Conference (EUSIPCO' 2013), 2013, Marrakech. 21st European Signal Processing Conference (EUSIPCO' 2013), 2013.

• Liu, Kefei ; João Paulo C. L. da Costa ; SO, H. C. . Multidimensional Prewhitening for parameter estimation without secondary noise-only observations: New Variants and Comparative Study. In: IEEE workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP '2013), 2013, Saint Martin. IEEE workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP '2013), 2013.

• Liu, Kefei ; SO, H.C. ; HUANG, LEI . A multi-dimensional model order selection criterion with improved identifiability. In: ICASSP 2012 2012 IEEE International Conference on Acoustics, Speech and Signal Processing, 2012, Kyoto. 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). p. 2441-2444.

• Liu, Kefei ; COSTA, JOÃO PAULO C.L. DA ; SO, HING CHEUNG ; GADÊLHA, LUIZ F. DE A. ; BORGES, GEOVANY A. . Improved Attitude Determination for Unmanned Aerial Vehicles with a Cross-Shaped Antenna Array. In: Signal and Image Processing, 2012, Honolulu. Signal and Image Processing. Calgary: ACTAPRESS.

• FERREIRA, RONALDO S. ; MARINHO, MARCO A. M. ; Liu, Kefei ; DA COSTA, JOAO PAULO C. L. ; AMARAL, ARTHUR V. ; SO, HING CHEUNG . Improved landing radio altimeter for unmanned aerial vehicles based on an antenna array. In: 2012 IV International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT 2012), 2012, St. Petersburg. 2012 IV International Congress on Ultra Modern Telecommunications and Control Systems. p. 105-113.

• Liu, Kefei ; DA COSTA, JOAO PAULO C. L. ; DE ALMEIDA, ANDRE L. F. ; SO, H.C. . A closed form solution to semi-blind joint symbol and channel estimation in MIMO-OFDM systems. In: 2012 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC), 2012, Hong Kong. 2012 IEEE International Conference on Signal Processing, Communication and Computing (ICSPCC 2012), 2012. p. 191-186.

• YE, XIAOJING ; Liu, Kefei ; LIU, MEIZHU . Efficient minimization for dictionary based sparse representation and signal recovery. In: the 4th International Symposium, 2011, Barcelona. Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies - ISABEL '11. New York: ACM Press. p. 1.

• LIU, MEIZHU ; Liu, Kefei ; YE, XIAOJING . Find the intrinsic space for multiclass classification. In: the 4th International Symposium, 2011, Barcelona. Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies - ISABEL '11. New York: ACM Press. p. 1.

• Liu, Kefei ; HUANG, ZHIHUA ; ZHAO, LINBING ; SHEN, YOUYU ; LIU, MEIZHU . Error estimate of quadrature sampling system via discrete Hilbert transform. In: 2010 2nd International Conference on Signal Processing Systems (ICSPS), 2010, Dalian. 2010 2nd International Conference on Signal Processing Systems. v. 1. p. V1-10-13.

• SHENG HONG ; KEFEI LIU ; YING LI ; HANG ZOU ; YUNPING QI ; KAN HONG . A new direct-sequence UWB transceiver based on Bridge function sequence. In: 2010 Second International Conference on Computational Intelligence and Natural Computing (CINC), 2010, Wuhan. 2010 Second International Conference on Computational Intelligence and Natural Computing. p. 209.

• Yang, Dongkai ; Liu, Kefei ; LIU, QINGGE ; ZHANG, QISHAN . Performance Analysis of Quadratic Prime Codes and Construction of New Frequency-Hopping Sequences. In: 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM), 2009, Beijing. 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing. p. 1-4.

• Yang, Dongkai ; YU, XIN ; Liu, Kefei ; ZHANG, QISHAN . Performance Analysis of PAPR in MC-CDMA System. In: , 2009, Nanjing. . p. 2676-2679.

• Hong, Sheng ; Yang, Dongkai ; Liu, Kefei ; GAO, SHULIANG ; XIONG, HUAGANG ; ZHANG, QISHAN . Noise Analysis for a New Digital Beamformer On-Receive-Only. In: 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM), 2009, Beijing. 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing. p. 1.

• Hong, Sheng ; XIONG, HUAGANG ; Liu, Kefei ; CHANG, QING ; ZHANG, QISHAN ; LIU, YONGQIANG ; He, Xiaoxiang ; Tentzeris, Manos M. . Application of Bridge Function Sequences in Passive Beamformer. In: 2009 International Conference on Networks Security, Wireless Communications and Trusted Computing (NSWCTC), 2009, Wuhan. 2009 International Conference on Networks Security, Wireless Communications and Trusted Computing. p. 637-640.

• Yang, Dongkai ; Liu, Kefei ; ZHANG, QISHAN ; CHEN, YI . Performance Analysis of Frequency Diversity for Multi-Carrier CDMA System Based on Bridge Function. In: 2008 4th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM), 2008, Dalian. 2008 4th International Conference on Wireless Communications, Networking and Mobile Computing. p. 1.

• SHENG HONG ; HANZHONG CHUNYU ; KEFEI LIU ; TENTZERIS, M. . Combination of adaptive modulation and power management for the performance enhancement of MIMO-OFDM systems. In: 2008 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, 2008, San Diego. 2008 IEEE Antennas and Propagation Society International Symposium. p. 1.

• Liu, Kefei ; SO, H. C. ; João Paulo C. L. da Costa ; HUANG, L. . Core Consistency Diagnostic Aided by Reconstruction Error for Accurate Enumeration of the Number of Components in PARAFAC models. 2013. (Apresentação de Trabalho/Conferência ou palestra).

• Liu, Kefei . Multidimensional Prewhitening for Accurate Signal Reconstruction in Kronecker Colored Noise Environments. 2012. (Apresentação de Trabalho/Seminário).

• Liu, Kefei . Application of Parallel Factor Analysis in MIMO-OFDM Systems. 2012. (Apresentação de Trabalho/Comunicação).

Projetos de pesquisa

• 2012 - Atual

  MINIVANT-Development of a Mini-UAV for imaging gyro-stabilized, Descrição: The purpose of this project is to develop mini unmanned aerial vehicle (UAV Mini) to support communication, coordination and interoperability in Wireless Sensor Networks composed by static sensor nodes and mobile (UAVs). With this, the goal is to enable their cooperation in order to provide data in a timely manner to support search and rescue in disaster situations.. , Situação: Em andamento; Natureza: Pesquisa. , Alunos envolvidos: Graduação: (2) / Doutorado: (1) . , Integrantes: Kefei Liu - Integrante / João Paulo Carvalho Lustosa da Costa - Integrante / Geovany Araújo Borges - Coordenador / Marco A. M. Marinho - Integrante / Ronaldo S. Ferreira Junior - Integrante.

• 2006 - 2007

  Development of a Novel Digital Nuclear Spectrum Analyzer, Descrição: Design and implement a novel nuclear spectrometer based on USB and 1394 interface, and develop a universal portable high-speed data acquisition system with high pass rate and high-resolution.. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Kefei Liu - Integrante / Sheng Hong - Integrante.

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