NATIONAL TSING HUA UNIVERSITY

X. Xie, Y. Lu, C.-Y. Chi, W. Chen, B. Ai, and D. Niyato, “KANsformer for scalable beamforming,” IEEE Trans. Vehicular Technology, pp. 1-6, 2025 (early access).

Y. Lu, C.-Y. Chi, B. Ai, and Z. Zhong, “Rate outage constrained energy efficiency under MISO interference channels,,” IEEE Trans. Wireless Communications, pp. 1-14, 2025 (early access).

Y. Lu, C.-Y. Chi, B. Ai, and Z. Zhong, “Communication-sensing region for cell-free massive MIMO ISAC systems,,” IEEE Trans. Wireless Communications, vol. 23, no. 9, pp. 12396-12411, Sep. 2024.

Y. Fang, Y. Liu, C.-Y. Chi, Z. Long and C. Zhu, “CS2DIPs: Unsupervised HSI super-resolution using coupled spatial and spectral DIPs,” IEEE Trans. Image Processing, vol. 33, pp. 3090-3101, May 2024.

Y. Li, H.-X. Ren, C.-Y. Chi, and Y.-B. Miao, “Artificial intelligence-guided gut-microenvironment-triggered imaging sensor reveals potential indicators of Parkinson's disease,” Advanced Science, vol. 11, no.23, pp. 1-14, June 2024.

Y. Li, C.-W. Huang, C.-Y. Chi, and T. Q. S. Quek, “Privacy-preserving federated primal-dual learning for non-convex and non-smooth problems with model sparsification,” IEEE Internet of Things Journal, vol. 11, no. 15, pp. 25853-25866, Aug. 2024.

Y.-A. Geng, C.-Y. Chi, W. Sun, J. Zhang, and Q. Li, “Disentangling clusters from non-Euclidean data via graph frequency reorganization,” Information Sciences, 662 (2024) 120288.

Y. Li, S. Wang, C.-Y. Chi and T. Q. S. Quek, “Differentially private federated clustering over non-IID data,” IEEE Internet of Things Journal, vol. 11, no. 4, pp. 6705-6721, Feb. 2024.

C.-H. Lin, Y. Liu, C.-Y. Chi, C.-C. Hsu, H. Ren, and Tony Q. S. Quek, “Hyperspectral tensor completion using low-rank modeling and convex functional analysis,” IEEE Trans. Neural Networks and Learning Systems, vol. 35, no. 8, pp. 10736-10750, Aug. 2024.

K. F. Niresi and C.-Y. Chi, “Robust hyperspectral inpainting via low-rank regularized untrained convolutional neural network,” IEEE Geoscience and Remote Sensing Letters, vol. 20, pp. 1-5, Jan. 2023.

Y. Li, S. Wang, C.-Y. Chi, and T. Q. S. Quek, “Differentially private federated learning in edge networks: The perspective of noise reduction,” IEEE Network, vol. 36, no. 5, pp. 167-172, Nov. 2022.

Keivan Faghih Niresi and Chong-Yung Chi, “Unsupervised hyperspectral denoising based on deep Image prior and least favorable distribution,” IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 15, pp. 5967-5983, Aug. 2022.

W.-B. Wang, Y. Lu, and C.-Y. Chi, “Secrecy energy efficiency in cognitive radio networks with untrusted secondary users,” IEEE Trans. Green Communications and Networking, vol. 5, pp. 216-230, March 2021.

Showkat Ahmad Bhat, Ishfaq Bashir Sofi, and Chong-Yung Chi, “Edge computing and its convergence with blockchain in 5G and beyond: security, challenges, and opportunities,” IEEE Access, vol. 8, pp. 205340-205373, Nov. 2020.

Y.-A. Geng, Q.-Y. Li, M.-F. Liang, Chong-Yung Chi, J. Tan and H. Huang, “Local-density subspace distributed clustering for high-dimensional data,” IEEE Trans. Parallel and Distributed Systems, vol. 31, no. 8, pp. 1799-1814, Aug. 2020.

Y.-R. Syu, C.-H. Lin, Chong-Yung Chi, “An outlier-insensitive unmixing algorithm with spatially varying hyperspectral signatures,” IEEE Access, vol. 7, pp. 15086-15101, Jan. 2019.

C.-H. Lin, Chong-Yung Chi, L. Chen, D. J. Miller, and Y. Wang, “Detection of sources in non-negative blind source separation by minimum description length criterion,” IEEE Trans. Neural Networks and Learning Systems, vol. 29, no. 9, pp. 4022-4037, Sept. 2018.

C.-H. Lin, R. Wu, W.-K. Ma, Chong-Yung Chi, and Y. Wang, “Maximum volume inscribed ellipsoid: A new simplex-structured matrix factorization framework via facet enumeration and convex optimization,” SIAM Journal on Imaging Sciences, vol. 11, no. 2, pp. 1651-1679, Jun. 2018.

C.-H. Lin, F. Ma, Chong-Yung Chi, and C.-H. Hsieh, “A convex optimization-based coupled nonnegative matrix factorization algorithm for hyperspectral and multispectral data fusion,” IEEE Trans. Geoscience and Remote Sensing, vol. 56, no. 3, pp. 1652-1667, Mar. 2018.

G.-X. Xu, C.-H. Lin, W.-G. Ma, S.-Z. Chen, and Chong-Yung Chi, “Outage constrained robust hybrid coordinated beamforming for massive MIMO enabled heterogeneous cellular networks,” IEEE Access, vol. 5, pp. 13601-13616, Mar. 2017.

X. Xu, X. Chen, M. Zhao, S. Zhou, Chong-Yung Chi, and J. Wang, “Power-efficient distributed beamforming for full-duplex MIMO relaying networks,” IEEE Trans. Vehicular Technology, vol. 66, no. 2, pp. 1087-1103, Feb. 2017.

W. Xu, L. Wang, and Chong-Yung Chi, “A simplified GCS-DCSK modulation and its performance optimization,” International Journal of Bifurcation and Chaos, vol. 26, no. 13, pp. 1650213-1-1650213-11, Dec. 2016.

A. Ambikapathi, T.-H. Chan, C.-H. Lin, F.-S. Yang, Chong-Yung Chi, and Y. Wang, “Convex-optimization-based compartmental pharmacokinetic analysis for prostate tumor characterization using DCE-MRI,” IEEE Trans. Biomedical Engineering, vol. 63, no. 4, pp. 707-720, Apr. 2016. COKE high resolution images, CAM-CM Experimental Results, Additional Simulations.

C.-H. Lin, Chong-Yung Chi, Y.-H. Wang, and T.-H. Chan, “A fast hyperplane-based minimum-volume enclosing simplex algorithm for blind hyperspectral unmixing,” IEEE Trans. Signal Processing, vol. 64, no. 8, pp. 1946-1961, Apr. 2016.

C.-H. Lin, W.-K. Ma, W.-C. Li, Chong-Yung Chi, and A. Ambikapathi, “Identifiability of the simplex volume minimization criterion for blind hyperspectral unmixing: The no pure-pixel case,” IEEE Trans. Geoscience and Remote Sensing, vol. 53, no.10, pp. 5530-5546, Oct. 2015.

W.-C. Li, T.-H. Chang, and Chong-Yung Chi, “Multicell coordinated beamforming with rate outage constraint–Part II: Efficient approximation algorithms,” IEEE Trans. Signal Processing, vol. 63, no. 11, pp. 2763-2778, Jun. 2015.

W.-C. Li, T.-H. Chang, and Chong-Yung Chi, “Multicell coordinated beamforming with rate outage constraint–Part I: Complexity analysis,” IEEE Trans. Signal Processing, vol. 63, no. 11, pp. 2749-2762, Jun. 2015.

K.-Y. Wang, A. M.-C. So, T.-H. Chang, W.-K. Ma, and Chong-Yung Chi, “Outage constrained robust transmit optimization for multiuser MISO downlinks: Tractable approximations by conic optimization,” IEEE Trans. Signal Processing, vol. 62, no. 21, pp. 5690-5705, Nov. 2014. Companion technical report

W.-K. Ma, J. M. Bioucas-Dias, T.-H. Chan, N. Gillis, P. Gader, A. J. Plaza, A. Ambikapathi, and Chong-Yung Chi, “A signal processing perspective on hyperspectral unmixing:Insights from Remote Sensing,” IEEE Signal Processing Magazine, vol. 31, no. 1, pp. 67-81, Jan. 2014.

K.-K. Lee, W.-K. Ma, X. Fu, T.-H. Chan, and Chong-Yung Chi, “A Khatri-Rao subspace approach to blind identification of mixtures of quasi-stationary sources,” Signal Processing, vol. 93, no. 12, pp. 3515-3527, Dec. 2013.

T.-H. Chan, A. Ambikapathi, W.-K. Ma, and Chong-Yung Chi, “Robust affine set fitting and fast simplex volume max-min for hyperspectral endmember extraction,” IEEE Trans. Geoscience and Remote Sensing, vol. 51, no. 7, pp. 3982-3997, Jul. 2013.

H. Qin, Y. Sun, T.-H. Chang, X. Chen, Chong-Yung Chi, M. Zhao, and J. Wang, “Power allocation and time-domain artificial noise design for wiretap OFDM with discrete inputs,” IEEE Trans. Wireless Communications, vol. 12, no. 6, pp. 2717-2729, Jun. 2013.

F. He, Y. Sun, L. Xiao, X. Chen, Chong-Yung Chi, and S. Zhou, “Capacity region bounds and resource allocation for two-way OFDM relay channels,” IEEE Trans. Wireless Communications, vol. 12, no. 6, pp. 2904-2917, Jun. 2013.

A. Ambikapathi, T.-H. Chan, Chong-Yung Chi, and K. Keizer, “Hyperspectral data geometry based estimation of number of endmembers using p-norm based pure pixel identification algorithm,” IEEE Trans. Geoscience and Remote Sensing, vol. 51, no. 5, pp. 2753-2769, May. 2013.

K.-Y. Wang, N. Jacklin, Z. Ding, and Chong-Yung Chi, “Robust MISO transmit optimization under outage-based QoS constraints in two-tier heterogeneous networks,” IEEE Trans. Wireless Communications, vol. 12, no. 4, pp. 1883-1897, Apr. 2013.

W.-C. Li, T.-H. Chang, C. Lin, and Chong-Yung Chi, “Coordinated beamforming for multiuser MISO interference channel under rate outage constraints,” IEEE Trans. Signal Processing, vol. 61, no. 5, pp. 1087-1103, Mar. 2013.

Y.-C. Lin, T.-H. Chan, Chong-Yung Chi, S.-H. Ng, H.-L. Liu, K.-C. Wei, Y.-Y. Wai, C.-C. Wang, and J.-J. Wang, “Blind estimation of the arterial input function in dynamic contrast-enhanced MRI using purity maximization,” Magnetic Resonance in Medicine, vol. 68, no. 5, pp. 1439-1449, Nov. 2012.

Y. Yang, T.-H. Chang, W.-K. Ma, J. Ge, Chong-Yung Chi, and P.-C. Ching, “Noncoherent bit-interleaved coded OSTBC-OFDM with maximum spatial-frequency diversity,” IEEE Trans. Wireless Communications, vol. 11, no. 9, pp. 3335-3347, Sept. 2012.

T.-H. Chang, W.-K. Ma, C.-Y. Huang, and Chong-Yung Chi, “Noncoherent OSTBC-OFDM for MIMO and cooperative communications: Perfect channel identifiability and achievable diversity order,” IEEE Trans. Signal Processing, vol. 60, no. 9, pp. 4849-4863, Sept. 2012.

C. Shen, T.-H. Chang, K.-Y. Wang, Z. Qiu, and Chong-Yung Chi, “Distributed robust multi-cell coordinated beamforming with imperfect CSI: An ADMM approach,” IEEE Trans. Signal Processing, vol. 60, no. 6, pp. 2988-3003, Jun. 2012.

Y. Sun, X. Zhong, T.-H. Chang, S. Zhou, J. Wang, and Chong-Yung Chi, “Optimal real-time spectrum sharing between cooperative relay and ad-hoc networks,” IEEE Trans. Signal Processing, vol. 60, no. 4, pp. 1971-1985, Apr. 2012.

L. Chen, P. L. Choyke, T.-H. Chan, Chong-Yung Chi, G. Wang, and Y. Wang, “Tissue-specific compartmental analysis for dynamic contrast-enhanced MR imaging of complex tumors,” IEEE Trans. Medical Imaging, vol. 30, no. 12, pp. 2044-2058, Dec. 2011.

T.-H. Chan, W.-K. Ma, A. Ambikapathi, and Chong-Yung Chi, “A simplex volume maximization framework for hyperspectral endmember extraction,” IEEE Trans. Geoscience and Remote Sensing, vol. 49, no. 11, pp. 4177-4193, Nov. 2011.

A. Ambikapathi, T.-H. Chan, W.-K. Ma, and Chong-Yung Chi, “Chance constrained robust minimum volume enclosing simplex algorithm for hyperspectral unmixing,” IEEE Trans. Geoscience and Remote Sensing, vol. 49, no. 11, pp. 4194-4209, Nov. 2011.

L. Chen, T.-H. Chan, P. L. Choyke, E. M. C. Hillman, Chong-Yung Chi, Z. M. Bhujwalla, G. Wang, S. S. Wang, Z. Szabo, and Y. Wang, “CAM-CM: A signal deconvolution tool for in vivo dynamic contrast-enhanced imaging of complex tissues,” Bioinformatics, vol. 27, no. 18, pp. 2607-2609, Jul. 2011.

S.-C. Lin, T.-H. Chang, Y.-L. Liang, Y.-W. P. Hong, and Chong-Yung Chi, “On the impact of quantized channel feedback in guaranteeing secrecy with artificial noise: The noise leakage problem,” IEEE Trans. Wireless Communications, vol. 10, no. 3, pp. 901-915, Mar. 2011.

W.-C. Liao, T.-H. Chang, W.-K. Ma, and Chong-Yung Chi, “Qos-based transmit beamforming in the presence of eavesdroppers: An optimized artificial-noise-aided approach,” IEEE Trans. Signal Processing, vol. 59, no. 3, pp. 1202-1216, Mar. 2011.