鐘嘉德 Chung, Char-Dir
- Distinguished Professor, Department of Electrical Engineering, National Taiwan University
- Ph.D. University of Southern California, 1989
- M.S. University of Southern California, 1986
- B.S. National Taiwan University, 1983
Major Research Areas
Research Summary
In recent years, Prof. Char-Dir Chung has been fully devoted to the academice reseacrh on digital modulation theories. By introducing correlation among OFDM data symbols in frequency domain, Prof. Chung has proposed several spectrally-precoded OFDM (SP-OFDM) schemes. These schemes are important in that they not only reshape the power spectrum of the rectangularly pulsed OFDM signal to exhibit very small sidelobes, but also permit implementation and analysis with ease. These schemes apply to rectangularly pulsed OFDM with cyclic prefix (CP-OFDM) or zero padding (ZP-OFDM). Particularly, these SP-OFDM schemes exhibit extremely small power spectral sidelobes decaying asymptotically as f^{-2L-2}, where L denotes the precoding order. Because of the desirable characteristic of high spectral compactness, SP-OFDM is very promising for use in future broadband communications, especially in wireless communications. In order to justify the use of spectral precoding as a valuable element in future systems, Prof. Chung is progressively working toward the following advanced subjects regarding the interaction of spectral precoding with other important system functions. These issues include spectral precoding on correlated data, multiple-input multiple-output (MIMO) transmission, interchannel interference (ICI), peak-to-average power ratio (PAPR) reduction, adaptive modulation, bit and power loading, channel estimation, block decoding, and multiple-access OFDM communication. The studies in these lines of research will advance the knowledge of SP-OFDM. The possible research results have a potential in practical OFDM applications in that much higher spectral efficiency can be achieved and the guard band can be largely sized down. It is believed that such research contents are in perfect synchronism with worldwide research streams on OFDM-based wireless communications. Possible outcomes will bring the domestic efforts in these streams into international attention. Because the spectral precoding can be easily incorporated into the state-of-art OFDM system architecture, the developed algorithms may also be applied to future wireless communication systems and give practical value.
Char-Dir Chung received the B.S. degree in electrical engineering from the National Taiwan University (NTU), Taipei, in 1983, and the M.S. and Ph.D. degrees in electrical engineering from the University of Southern California, Los Angeles, in 1986 and 1989, respectively.
From 1989 to 1992, Dr. Chung was with the LinCom Corporation, Los Angeles, where he worked on analytical and simulation modeling of scientific and military satellite communication systems. From 1992 to 2005, he joined the faculty of the National Central University (NCU) in Taiwan. At NCU, he founded the Advanced Communication Laboratory in 1998, the Graduate Institute of Communication Engineering in 2000 and the Communication Engineering Department in 2003, and was the founding heads of these organizations. Since 2005, he has been on the faculty of the National Taiwan University, where he is now a Distinguished Professor of the Electrical Engineering Department and the Graduate Institute of Communication Engineering. Prof. Chung was endowed with the SiS Technology Chair for the 2009 academic year at NTU. His current research interests include digital modulation theory, wireless communications, spread spectrum communications and statistical signal processing. He has published more than 80 journal and conference papers and holds 6 patent rights in these areas.
Dr. Chung received the Group Achievement Award from the National Aeronautics and Space Administration, USA, in 1991; the Young Scientists Award from the International Union of Radio Science in 1993; the annual Research Award from the National Science Council, ROC, in 1992 and from 1994 to 2001, the Kentucky Colonel grade from the Commonwealth of Kentucky, USA, in 2003, and the FORMOSAT-2 Satellite Project Award from the National Space Center, ROC, in 2005. In 2005, Dr. Chung was ranked as the first-grade project investigator by the National Science Council, ROC. He served as the Chairman of IEEE Information Theory Society, Taipei Chapter, from 1997 to 1999, and the Secretary of Taipei Section from 2007 to 2008. He was an editor for the Journal of the Chinese Institute of Electrical Engineering from 2000 to 2004 and an editor for the Magazine of the same organization from 2003 to 2008. He was a guest co-editor for the IEEE Transactions on Vehicular Technology (Special Issue on Intelligent Transportation Systems and Telematics Applications) in 2008. Dr. Chung is a Fellow of the IEEE.
Dr. Chung has been very active in industrial development and government services in Taiwan. From 2004 to 2008, he served as the Chairman of the Wireless System Group of the National Science and Technology Program for Telecommunications, and the founding Chairman of the Taiwan Broadband Wireless Communications Industry Alliance. Since 2001, Dr. Chung joined several Technology Review Boards of the Ministry of Economic Affairs, and acted as the Chairman of the Board of Computer, Consumer Electronics, Communications, Optoelectronics, and Semiconductor Electronics from 2005 to 2008 and the Board of the Technologies and Applications from 2012 to 2013. Dr. Chung acted as Deputy Executive Secretary of the Science and Technology Advisory Group and of the National Information and Communication Security Taskforce during 2008-2011, Executive Secretary of the Digital Convergence Taskforce during 2011-2012 and of the National Information and Communication Initiative Committee during 2014-2016, Member and Executive Secretary of the Board of Science and Technology during 2014-2016, and Minister without Portfolio in 2016, all under the Executive Yuan (the Cabinet), and was involved in cross-ministry national policy making and coordination in a variety of science and technology areas including information and communications, digital content, digital convergence, electronics, technological innovation, biotechnology, agrobiology, talent cultivation, etc. Dr. Chung was awarded Merit Medal by Executive Yuan in 2016 to honor his contribution in reviewing national programs and making national policies in science and technology.
Journal articles & book chapters
1. S.-H. Lu, C.-D. Chung, W-C. Chen, and P.-F. Tsou, “Orthogonal constant-amplitude sequence families for system parameter identification in spectrally compact OFDM” , Wireless Personal Communications , pp. 1-pp. 35, Apr. 2024
2. J.-C. Liao, W.-C. Chen, and C.-D. Chung, “Performance analysis of SIMO–OFDM systems with pilot-aided channel estimation” , IEEE Syst. J. , Vol. vol. 17, no. 2 , pp. 2366-pp. 2377, Jun. 2023
3. W.-C. Chen, C.-D. Chung, and P.-H. Wang, “Pre-equalized and spectrally precoded OFDM” , IEEE Trans. Veh. Technol. , Vol. vol. 71, no. 7 , pp. 7472-pp. 7486, Jul. 2022
4. C.-D. Chung, W.-C. Chen, and C.-K. Yang, “Constant-amplitude sequences for spectrally compact OFDM training waveforms” , IEEE Trans. Veh. Technol. , Vol. vol. 69, no. 11 , p. 12974-p. 12991, Nov. 2020
5. C.-A. Ku and C.-D. Chung, “Enhancing user fairness in NOMA for downlink CoMP networks” , International Journal of Communications , Vol. vol. 14, no. 4 , pp. 312-317, Apr. 2019
6. C.-D. Chung and W.-C. Chen, “Preamble sequence design for spectral compactness and initial synchronization in OFDM” , IEEE Trans. Veh. Technol. , Vol. vol. 67, no. 2 , p. 1428-p. 1443, Feb. 2018
7. W.-C. Chen and C.-D. Chung, “Spectrally efficient OFDM pilot waveform for channel estimation” , IEEE Trans. Commun. , Vol. vol. 65, no. 1 , pp. 387-pp. 402, Jan. 2017
8. C.-D. Chung and K.-W. Chen, “Spectrally precoded OFDM without guard insertion” , IEEE Trans. Veh. Technol. , Vol. vol. 66, no. 1 , pp. 107- pp. 121, Jan. 2017
9. T.-W. Wu and C.-D. Chung, “Correlatively precoded OFDM with reduced PAPR” , IEEE Trans. Veh. Technol. , Vol. vol. 65, no. 3 , pp. 1409-1419-, Mar. 2016
10. C.-H. Huang and C.-D. Chung, “Diversity transmission and reception of DAPSK for OFDM” , IEEE Trans. Veh. Technol. , Vol. vol. 64, no. 6 , 2684-2692, Jun. 2015
11. C.-H. Huang and C.-D. Chung, “Differential space-time modulation using DAPSK over Rician fading channels” , Wireless Personal Communications , Vol. vol. 78, issue 2(2014) , pp. 1021-1046-, Sep. 2014
12. T.-W. Wu and C.-D. Chung, “Spectrally precoded DFT-based OFDM and OFDMA with oversampling” , IEEE Trans. Veh. Technol. , Vol. vol. 63, no. 6 , pp. 2769-2783-, Jul. 2014
13. C.-H. Tseng, Y.-C. Cheng and C.-D. Chung, “Subspace-based blind channel estimation for OFDM by exploiting cyclic prefix” , IEEE Wireless Commun. Lett. , Vol. vol. 2, no. 6 , pp. 691-694-, Dec. 2013
14. W.-C. Chen and C.-D. Chung, “Spectral precoding for cyclic-prefixed OFDMA with interleaved subcarrier allocation” , IEEE Trans. Commun. , Vol. vol. 61, no. 11 , pp. 4616-4629-, Nov. 2013
15. C.-H. Tseng and C.-D. Chung, “Concatenated precoded OFDM for CFO effect mitigation” , IEEE Trans. Veh. Technol. , Vol. vol. 62, no. 6 , pp. 2618-2632-, Jul. 2013
16. C.-D. Chung, W.-C. Chen and W.-L. Lin, “Realizable bandlimited DS-CDMA systems occupying Nyquist bandwidth” , IEEE Commun. Lett. , Vol. vol. 16, no. 7 , pp. 964-967-, Jul. 2012
17. C.-H. Huang and C.-D. Chung, “Differentially amplitude- and phase-encoded QAM for amplify-and-forward multiple relay system” , IEEE Trans. Veh. Technol. , Vol. vol. 61, no. 5 , pp. 2054-2066-, Jun. 2012
18. C.-D. Chung and W.-C. Chen, “Orthogonal multirate modulation” , IEEE Trans. Commun. , Vol. vol. 60, no. 1 , pp. 30-36-, Jan. 2012
19. C.-C. Lin, W.-C. Chen, and C.-D. Chung, “Spectral sidelobe decaying property of Walsh-Hadamard code in MC-CDMA systems” , IEEE Trans. Wireless Commun. , Vol. vol. 10, no. 10 , pp. 3151-3157-, Oct. 2011
20. J.-C. Liu and C.-D. Chung, “Distributed estimation in a wireless sensor network using hybrid MAC” , IEEE Trans. Veh. Technol. , Vol. vol. 60, no. 7 , pp. 3424-3435-, Sep. 2011
21. H.-M. Chen, W.-C. Chen and C.-D. Chung, “Spectrally precoded OFDM and OFDMA with cyclic prefix and unconstrained guard ratios” , IEEE Trans. Wireless Commun. , Vol. vol. 10, no. 5 , pp. 1416-1427-, May 2011
22. C.-D. Chung, “Spectral precoding for constant-envelope OFDM” , IEEE Trans. Commun. , Vol. vol. 58 , pp. 555-567-, Feb. 2010
23. H.-M. Chen and C.-D. Chung, “Asymptotic spectral behavior of spectrally precoded OFDM signal with arbitrary input statistics” , IEEE Commun. Lett. , Vol. vol. 13, no. 5 , pp. 324-326-, May 2009
24. W.-L. Lin and C.-D. Chung, “Adaptive differentially coherent orthogonally multiplexed orthogonal phase modulation over flat fading channels” , IEEE Trans. Wireless Commun. , Vol. vol. 8, no. 3 , pp. 1062-1066-, Mar. 2009
25. C.-D. Chung, “Spectral precoding for rectangularly pulsed OFDM” , IEEE Trans. Commun. , Vol. vol. 56, no. 9 , pp. 1498-1510-, Sep. 2008
26. W.-L. Lin and C.-D. Chung, “Constant-Power Adaptive Orthogonally Multiplexed Modulations Under Flat Rayleigh Fading” , IEEE Trans. Wireless Commun. , Vol. vol. 7, no. 5 , pp. 1517-1521-, May 2008
27. H.-S. Liaw, H.-T. Lin, and C.-D. Chung, “Suboptimum coherent detection of orthogonal phase-modulated signals” , International Journal of Electronics and Communications (AEU) , Vol. no. 61 , pp. 627-630-, Sep. 2007
28. C.-L. Tsai, K.-C. Fan, T.-C. Chuang, and C.-D. Chung, “Lossless data hiding of color images using pixel decomposition and phase difference” , Journal of Information Science and Engineering , Vol. vol. 23, no. 5 , pp. 1481-1498-, Sep. 2007
29. C.-D. Chung, “Spectrally precoded OFDM” , IEEE Trans. Commun. , Vol. vol. 54, no. 12 , pp. 2173-2185-, Dec. 2006
30. C.-D. Chung, “Noncoherent block detection in the presence of DC offset” , IEEE Trans. Wireless Commun. , Vol. vol. 5, no. 8 , pp. 2101-2110-, Aug. 2006
31. C.-D. Chung, “Correlatively coded OFDM” , IEEE Trans. Wireless Commun. , Vol. vol. 5, no. 8 , pp. 2044-2049-, Aug. 2006
32. C.-D. Chung and S.-M. Cho, “Noncoherent block detection of multiple-pulse equicorrelated modulation signals” , IEICE Trans. Commun. , Vol. vol. E88-B, no. 12 , p. 4558-4569-, Dec. 2005
33. C.-L. Tsai, H.-F. Chiang, K.-C. Fan, and C.-D. Chung, “Reversible data hiding and lossless reconstruction of binary images using pairwise logical computation mechanism” , Pattern Recognition , Vol. vol. 38, no. 11 , pp. 1993-2006-, Nov. 2005
34. C.-D. Chung and W.-L. Lin, “Spectrally efficient full-response Q2PSK signals” , IEE Electr. Lett. , Vol. vol. 41, no. 22 , pp. 1231-1232-, Oct. 2005
35. C.-D. Chung and H.-S. Liaw, “Orthogonally multiplexed on-off-keyed amplitude and phase modulation families” , IEEE Trans. Wireless Commun. , Vol. vol. 4, no. 1 , pp. 288-299-, Jan. 2005
36. S.-M. Cho and C.-D. Chung, “Phase modulation of OFDM signals” , International Journal of Electrical Engineering , Vol. vol. 11, no. 1 , pp. 31-42-, Feb. 2004
37. C.-D. Chung, “Coherent and differentially coherent detections of orthogonally -multiplexed orthogonal phase modulated signals” , IEEE Trans. Commun. , Vol. vol. COM-51, no. 3 , pp. 428-440-, Mar. 2003
38. F.-C. Hung, C.-D. Chung and Y.-L. Chao, “Coherent frequency/phase modulation scheme” , IEE Proc. Commun. , Vol. vol. 149, no. 1 , pp. 36-44-, Feb. 2002
39. F.-C. Hung and C.-D. Chung, “Block coding of L-phase-level coherent frequency/phase modulated signals” , IEE Electronics Letters , Vol. vol. 38, no. 24 , pp. 1548-1550-, Nov. 2002
40. C.-D. Chung and F.-C. Hung, “Noncoherent maximum-likelihood block detection of orthogonal NFSK-LDPSK signals” , IEEE Trans. Veh. Technol. , Vol. vol. COM-51, no. 2 , pp. 283-292-, Mar. 2002
41. C.-D. Chung, “Orthogonally-multiplexed orthogonal amplitude modulation family” , IEEE Trans. Commun. , Vol. vol. COM-50, no. 3 , pp. 415-428-, Mar. 2002
42. C.-D. Chung and F.-H. Hwang, “Diversity codes for differential phase modulation in a correlated Rayleigh fading channel” , IEEE Trans. Commun. , Vol. vol. COM-49, no. 7 , pp. 1154-1157-, Jul. 2001
43. C.-D. Chung, “Differential detection of quadrature frequency/phase modulated signals” , IEEE Trans. Commun. , Vol. vol. COM-47, no. 4 , pp. 546-557-, Apr. 1999
44. C.-D. Chung, F.-C. Hung and Y.-L. Chao, “Coherent frequency/phase modulation scheme” , IEE Electronics Letters , Vol. vol. 35, no. 6 , pp. 444-445-, Mar. 1999
45. C.-D. Chung, “Noncoherent detection of preamble-signal-assisted differentially phase-encoded APSK signals” , IEEE Trans. Commun. , Vol. vol. COM-46, no. 10 , pp. 1266-1270-, Oct. 1998
46. C.-D. Chung, “Differentially amplitude and phase-encoded QAM for the correlated Rayleigh-fading channel with diversity reception” , IEEE Trans. Commun. , Vol. vol. COM-45, no. 3 , pp. 309-321-, Mar. 1997
47. C.-D. Chung and P.-C. Huang, “The effects of fading and partial-band noise jamming on a fast FH/BFSK acquisition receiver with noise-normalization combination” , IEEE Trans. Commun. , Vol. vol. COM-44, no. 1 , pp. 94-104-, Jan. 1996
48. C.-D. Chung and A. Polydoros, “Parameter estimation of random FH signals using autocorrelation techniques” , IEEE Trans. Commun. , Vol. vol. COM-43, no. 3 , pp. 1097-1106-, Mar. 1995
49. C.-D. Chung,, “Differentially coherent detection technique for direct-sequence code acquisition in mobile fading channels” , IEEE Trans. Commun., , Vol. vol. COM-43, no. 3 , pp. 1116-1126-, Mar. 1995
50. C.-D. Chung, “Performance analysis of a slow FH/MFSK acquisition scheme in random partial-band noise jamming” , IEE Proc. Commun. , Vol. vol. 141, no. 6 , pp. 396-406-, Dec. 1994
51. H.-S. Liaw and C.-D. Chung, “Differentially coherent correlation technique for DS-SS code acquisition in a fast Rayleigh fading channel” , IEE Electronics Letters , Vol. vol. 30, no. 21 , pp. 1738-1739-, Oct. 1994
52. C.-D. Chung, “Generalised likelihood-ratio detection of multiple-hop frequency-hopping signals” , IEE Proc. Commun. , Vol. vol. 141, no. 2 , pp. 70-78-, Apr. 1994
53. C.-D. Chung, “Autocorrelation detection of multiple-hop frequency-hopping signals” , Transactions of Chinese Institute of Electrical Engineering, Series E , Vol. vol. 1, no. 1 , pp. 35-43-, Feb. 1994
Conference & proceeding papers:
1. S.-Y. Tsai, W.-C. Chen, and C.-D. Chung, “Iterative symbol decision schemes for CP-OTFS on static multipath channels” , 2023 IEEE International Conference on Computing, Networking, and Communications , Honolulu, Hawaii , Feb. 2023
2. S.-Y. Tsai, P.-J. Chen, W.-C. Chen, and C.-D. Chung, “Iterative decision-feedback hybrid equalization for CP-OTFS on time-varying multipath channels” , Proc 12th International Conference on Communications, Circuits, and Systems (ICCCAS-2023 On-Site/On-Line Conference) , Singapore/Virtual , May 2023
3. S.-H. Lu, C.-D. Chung, and W.-C. Chen, “Simultaneous channel estimation in MIMO OFDM systems using constant-amplitude sequences” , 2023 IEEE 98th Vehicular Technology Conference (VTC-2023 Fall Hong Kong/Virtual Conference) , Hong Kong/Virtual , Oct. 2023
4. M.-Z. Xu, C.-D. Chung, and W.-C. Chen, “Coarse initial synchronization for OTFS” , 2023 IEEE 98th Vehicular Technology Conference (VTC-2023 Fall Hong Kong/Virtual Conference) , Hong Kong/Virtual , Oct. 2023
5. W.-C. Chang, W.-C. Chen, and C.-D. Chung, “Time-frequency orthogonal multiple access using cyclic-prefix OTFS modulation” , 2023 International Conference on Future Communications and Networks , Queenstown, New Zealand , Dec. 2023
6. L.-Y. Ma, W.-C. Chen, and C.-D. Chung, “Iterative decision-feedback hybrid equalization in SC-FDM” , IEEE International Symposium on Personal, Indoor and Mobile Radio Communications , Virtual Conference , Sep. 2022
7. W.-C. Chen, C.-H. Lu, and C.-D. Chung, “Spectrally precoded OTFS modulation” , 2022 IEEE 96th Vehicular Technology Conference (VTC-2022 Fall London/Beijing/Virtual Conference) , London/Beijing/Virtual , Sep. 2022
8. T.-Y. Tsou, C.-D. Chung W.-C. Chen, and F.-C. Hung, “Realizable DS-CDMA system occupying Nyquist chip bandwidth and exhibiting zero direct-current” , The 11th International Conference on Communications, Circuits, and Systems (ICCCAS-2022 Virtual Conference) , Singapore , May 2022
9. C.-J. Tsai, W.-C. Chen, F.-C. Hung, and C.-D. Chung, “GLRT-based preamble sequence detection in OFDM” , 2021 IEEE 93rd Vehicular Technology Conference (VTC-2021 Spring Virtual Conference) , Helsinki, Finland , Apr. 2021
10. J.-L. Jiang, C.-D. Chung, and W.-C. Chen, “Cancellation symbol insertion for spectrally compact OFDM pilot waveform” , IEEE Wireless Communications and Networking Conference (WCNC 2020 Virtual Conference) , Seoul, Korea , May 2020
11. W.-C. Chen, J.-L. Jiang, and C.-D. Chung, “Cancellation symbol insertion technique for sidelobe suppression in OFDM pilot waveform” , IEEE 8th International Conference on Communications in China (ICCC 2019), , Changchun, China , Aug. 2019
12. W.-C. Chen, C.-K. Yang, P.-T. Chi, and C.-D. Chung, “Pilot sequence design for spectral compactness and channel estimation in OFDM” , IEEE 90th Vehicular Technology Conference , Honolulu, Hawaii , Sep. 2019
13. C.-D. Chung and C.-A. Ku, “Selective transmission strategy for NOMA in downlink CoMP” , 2019 IEEE 89th Vehicular Technology Conference , Kuala Lumpur, Malaysia , May 2019
14. F.-C. Wei, M.-L. Ku, and C.-D Chung, “Millimeter-wave full-duplex MIMO systems with hybrid beamforming” , IEEE 10th International Conference on Communication Software and Networks (ICCSN 2018) , Chengdu, China , Jul. 2018
15. C.-A. Ku and C.-D. Chung, “Strong-channel-selection NOMA in downlink and uplink coordinated multipoint networks” , 15th IEEE Vehicular Technology Society-Asia Pacific Wireless Communications Symposium , Hsinchu, Taiwan, ROC , Aug. 2018
16. C.-C. Lin, W.-C. Chen, and C.-D. Chung, “Near-CAZAC preamble sequence for initial synchronization in spectrally compact OFDM” , 2018 IEEE 88th Vehicular Technology Conference , Chicago, USA , Aug. 2018
17. C.-W. Chiang, C.-D. Chung, M.-L. Ku, and S.-H. Wang, “MIMO-OFDM subband beamforming with limited feedback” , Proc. 14th IEEE Vehicular Technology Society--Asia Pacific Wireless Communications Symposium , Incheon, Korea , Aug. 2017
18. F.-Y. Liao, E.-H. Yeh, P. Lin, C.-D Chung, “A prediction model for location-based time-dependent smart data pricing” , 2nd International Workshop on Mobile Communications and Networking (IWMCN 2017) , Sep. 2017
19. P.-R. Li, M.-L. Ku, C.-D. Chung and S.-H. Wang, “Joint transmit beamforming and power control for full-duplex cellular systems” , IEEE 85th Vehicular Technology Conference , Sydney, Australia , Jun. 2017
20. C.-D. Chung and K.-W. Chen, “Spectrally precoded OFDM without guard interval insertion” , 2016 IEEE 83rd Vehicular Technology Conference , Nanjing, China , May 2016
21. S.-H. Ma, Y.-C. Wang and C.-D. Chung, “MISO-OFDM System With Subband Beamforming” , 2016 IEEE 5th International Conference on Communications in China (ICCC) , Chengdu, China , Jul. 2016
22. Y.-C. Wang, P.-H. Chou and C.-D. Chung, “Circulantly Precoded OFDM” , 2016 IEEE 5th International Conference on Communications in China (ICCC) , Chengdu, China , Jul. 2016
23. H.-W. Lin, M.-J. Lu, P. Lin, P.-H. Chou, J.-Y. Jeng and C.-D. Chung, “Location-based time-dependent smart data pricing by SDN” , 2016 IEEE Global Commmun. Conf. (GlobeCom) , Washington DC, USA , Dec. 2016
24. T.-Y. Chang, P.-H. Chou and C.-D. Chung, “Single-carrier frequency division multiple access with anchor-symbol insertion” , 2015 IEEE 82nd Vehicular Technology Conference , Boston, USA , Sep. 2015
25. C.-H. Tseng, P.-H. Chou and C.-D. Chung, “Sparse-Training-Sequence-Aided OFDM Systems for CFO Effect Mitigation” , 2014 IEEE 3rd International Conference on Communications in China , Shanghai, China , Oct. 2014
26. C.-H. Huang and C.-D. Chung, “Differential space-time modulation using DAPSK” , 2014 IEEE 23rd Wireless and Optical Communication Conference (WOCC 2014) , Newark, New Jersey, USA , May 2014
27. T.-W. Wu, W.-C. Chen, Y.-M. Huang, C.-D. Chung, and B.-L. Jiao, “OFDM with spectral precoding and specific-band power minimization” , 2014 IEEE 79th Vehicular Technology Conference , Seoul, Korea , May 2014
28. C.-H. Tseng and C.-D. Chung, “CFO effect mitigation using reduced Hadamard-coded conjugate transmission for OFDM systems” , 2013 IEEE 78th Vehicular Technology Conference , Las Vegas, USA , Sep. 2013
29. T.-W. Wu, Y.-C. Cheng and C.-D. Chung, “Optimal training symbols for channel estimation in constant-envelope OFDM” , 2013 IEEE 2nd International Conference on Communications in China (ICCC) , Xian, China , Aug. 2013
30. J.-C. Liu, P.-H. Chou and C.-D. Chung, “Distributed detection in a wireless sensor network using hybrid MAC” , 2013 IEEE 77th Vehicular Technology Conference , Dresden, Germany , Jun. 2013
31. J.-C. Liu and C.-D. Chung, “Distributed estimation in a phase-modulated wireless sensor network” , IET Conf. on Inform. and Commun. Technol. , Beijing, China , Apr. 2013
32. C.-H. Huang and C.-D. Chung, “Differentially amplitude- and phase-encoded QAM in amplify-and-forward multiple relay system over Nakagami-m fading channels” , ICWMC 2012 The Eighth International Conference on Wireless and Mobile Communications , Venice, Italy , Jun. 2012
33. W.-L. Lin, C.-H. Huang, P.-Y. Li and C.-D. Chung, “Cramér-Rao bounds for channel estimation in amplify-and-forward cooperative communication systems” , APSIPA 2011 Annual Summit and Conference , Xi-An, China , Oct. 2011
34. H.-M. Chen, W.-C. Chen and C.-D. Chung, “An improved spectral precoding technique for constant-envelope OFDM” , 2011 IEEE 74th Vehicular Technology Conference , San Francisco, USA , Sep. 2011
35. J.-C. Liu and C.-D. Chung, “Power-efficient distributed estimation in hybrid MAC wireless sensor networks” , 2011 IEEE 73rd Vehicular Technology Conference , Budapest, Hungary , May 2011
36. H.-M. Chen and C.-D. Chung*, “Spectrally precoded OFDMA with cyclic prefix” , APSIPA 2010 Annual Summit and Conference (Student Symposium) , Biopolis, Singapore , Dec. 2010
37. H.-M. Chen and C.-D. Chung, “Adaptive spectrally-precoded OFDM with cyclic prefix” , 19th Annual Wireless and Optical Communications Conference , Shanghai, China , May 2010
38. Y.-R. Peng, W.-L. Lin, and C.-D. Chung, “Adaptive spectrally-precoded OFDM under flat fading” , the 12th International Conference on Advanced Communication Technology , Phoenix Park, Korea , Feb. 2010
39. W.-L. Lin, Y.-R. Peng, and C.-D. Chung, “Adaptive UL-coded spectrally-precoded OFDM with zero-forcing equalization under flat fading” , APSIPA 2009 Annual Summit and Conference , Hokkaido, Japan , Oct. 2009
40. W.-L. Lin, C.-D. Chung and Y.-R. Peng, “Adaptive spectrally precoded OFDM with constant transmission power” , 8th IASTED International Conference on Wireless and Optical Communications (WOC 2009) , Banff, Alberta, Canada , Jul. 2009
41. Wei-Lun Lin and Char-Dir Chung, “Adaptive orthogonally multiplexed modulations with constant transmission power under flat Rayleigh fading” , Eighth IASTED International Conference on Wireless and Optical Communications (WOC 2008) , Quebec City, Quebec, Canada , May 2008
42. W.-L. Lin and C.-D. Chung, “Constant-power adaptive differentially coherent orthogonally multiplexed orthogonal phase modulation for flat fading channels” , 18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications , Athens, Greece , Sep. 2007
43. C.-D. Chung, “Spectrally precoded OFDM with cyclic prefix” , 2007 IEEE International Conference on Communications , Glasgow, Scotland, U.K. , Jun. 2007
44. L.-D. Fang, D.-C. Chang and C.-D. Chung, “MIMO system with UWB NMHP waveforms for tumor detection” , 3rd International Conference on Electromagnetic Near-Field Characterization and Imaging , St. Louis, MO, USA , Jun. 2007
45. C.-D. Chung and W.-L. Lin, “New full-response Q2PSK signal format” , in the 2006 IASTED International Conference on Networks and Communication Systems Record , Chiang Mai, Thailand , Mar. 2006
46. C.-D. Chung, “Differentially encoded quadrature amplitude modulation for DC offset elimination” , in the Fourth IASTED International Conference on Communication Systems and Networks Record , Benidorm, Spain , Sep. 2005
47. C.-D. Chung, S.-M. Cho and W.-L. Lin, “Noncoherent equicorrelated modulation signals” , in the IASTED International Conference on Networks and Communication Systems Record , Krabi, Thailand , Apr. 2005
48. C.-L. Tsai, K.-C. Fan, C.-D. Chung, and T.C. Chuang, “Reversible and loseloss data hiding with application in digital library” , in the 38th IEEE International Conference on Security Technology Record , New Mexico, USA , Oct. 2004
49. C.-D. Chung, “Noncoherent detection of digitally phasor block-modulated signals in the presence of DC offset” , in the 2004 IEEE 60th Vehicular Technology Conference Record , Los Angeles, USA , Sep. 2004
50. C.-D. Chung and H.-S. Liaw, “Orthogonally-multiplexed on-off-keyed modulation” , in the Fourth IASTED International Multi-Conference on Wireless and Optical Communications Record , Banff, Canada , Jul. 2004
51. C.-L. Tsai, K.-C. Fan, C.-D. Chung, and T.C. Chuang, “Data hiding of binary images using pairwise logical computation mechanism” , in the 2004 IEEE International Conference on Multimedia Record , Taipei, ROC , Jun. 2004
52. C.-D. Chung, W.-L. Lin, and C.-Y. Wu, “Estimation of delay phase offset in multi-carrier differential phase modulation systems” , in the 2003 International Conference on Communication Technology Record , Beijing, China , Apr. 2003
53. F.-H. Hwang and C.-D. Chung, “Diversity transform for decision-feedback differential detection of N-DPSK for a correlated Rayleigh fading channel” , in the 2002 International Conference on Communications Circuits and Systems Record , Chengdu, China , Jun. 2002
54. C.-D. Chung and F.-C. Hung, “Multiple-symbol noncoherent block detection of orthogonal NFSK/LDPSK signals” , in the 2001 International Symposium on Communications Record , Tainan, Taiwan, ROC , Nov. 2001
55. C.-L. Tsai, K.-C. Fan and C.-D. Chung, “Secure information by using digital data embedding and spread spectrum techniques” , in the 2001 International Carnahan Conference on Security Technology Record , London, UK , Oct. 2001
56. F.-C. Hung and C.-D. Chung, “Trellis coding of L-phase-level coherent frequency/phase modulated signals” , in the 2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications Record , Taoyuan, Taiwan, ROC , Mar. 2001
57. 廖宏祥,馬鋐斌,及鐘嘉德, “多載波直接序列展頻系統在非線性功率放大器下的效能評估” , 海峽兩岸資訊(信息)技術研討會 , 中壢,臺灣,中華民國 , Feb. 2001
58. C.-D. Chung and F.-H. Hwang, “Diversity coding technique for differential phase modulation in a correlated Rayleigh fading channel” , in the 11th International Symposium on Personal, Indoor and Mobile Radio Communications Record , London, UK , Sep. 2000
59. C.-D. Chung, “A new modulation class” , in the 1999 International Symposium on Communications Record , Kaoshiung, Taiwan, ROC , Nov. 1999
60. C.-D. Chung and S.-M. Cho, “Constant-envelope orthogonal frequency division multiplexing modulation” , in the fifth Asia-Pacific Conference on Communications Record , Beijing, China , Oct. 1999
61. Y.-L. Chao and C.-D. Chung, “On a coherent frequency/phase modulation” , in the fourth Workshop on Computer and Communication Technologies , RecordTaoyuan, Taiwan, R.O. C. , Oct. 1998
62. C.-D. Chung, “Differentially amplitude and phase encoded QAM for correlated Rician fading channels with diversity reception” , in ISCOM '95 Conference Record , Taipei, R.O.C. , Dec. 1995
63. C.-D. Chung, “Differentially amplitude and phase encoded QAM on Rayleigh fading channels” , in IEEE MilCom '95 Conference Record , San Diego, California, U.S.A. , Oct. 1995
64. C.-D. Chung and P.-C. Huang, “Performance analysis of a fast FH/BFSK acquisition receiver in nonselective fading channels” , in IEEE MilCom ’94 Conference Record , Fort Monmouth, New Jersey, U.S.A. , Oct. 1994
65. C.-D. Chung and A. Polydoros, “Envelope based classification schemes of continuous-phase binary frequency-shift-keyed modulations” , in IEEE MilCom '94 Conference Record , Fort Monmouth, New Jersey, U.S.A. , Oct. 1994
66. C.-D. Chung, “Performance analysis of a serial DS-SS code acquisition receiver in a Rayleigh fading channel” , in IEEE MilCom '94 Conference Record , Fort Monmouth, New Jersey, U.S.A. , Oct. 1994
67. C.-D. Chung, “An improved detection technique for direct-sequence code acquisition in a Rayleigh fading mobile channel” , in IEEE ICC '94 Conference Record , New Orleans, Louisiana, U.S.A. , May 1994
68. C.-D. Chung, “Performance analysis of a slow FH/MFSK acquisition scheme in random partial-band noise jamming” , in International Symposium on Communications '93 Record , Hsinchu, Taiwan, R.O.C. , Dec. 1993
69. Y.T. Su, C.-D. Chung, R.-C. Wu, H.-J. Li, and J.-F. Chang, “Statistical characterization experiment of mobile low-earth-orbiting satellite channels” , in Asia-Pacific Microwave Conference '93 Record , Hsinchu, Taiwan, R.O.C. , Oct. 1993
70. C.-D. Chung, “Parameter estimation of random FH signals using autocorrelation techniques” , in the XXIVth General Assembly of the International Union of Radio Science Record (abstract only) , Kyoto, Japan , Aug. 1993
71. J.-F. Chang, R.R. Taur, T.-H. Chu, H.-J. Li, Y.-T. Su, Y.-W. Kiang, S.-L. Su, M.-P. Shih, H.-D. Lin, and C.-D. Chung, “ROCSAT-1 Telecommunication Experiments” , in the 3rd International Mobile Satellite Conference Record , Pasadena, California, U.S.A. , Jun. 1993
72. C.-D. Chung, “Optimum and suboptimum probe detection strategies for MILSATCOM systems employing FH/DPSK modulation” , in 1992 National Symposium on Telecommunications Record , Chung-Li, Taiwan, R.O.C. , Dec. 1992
73. R.M. Grayson and C.-D. Chung, “Analysis of uplink timing acquisition for SATCOM systems employing multiple chip-per hop FH/DPSK” , in IEEE MilCom '92 Conference Record , San Diego, California, U.S.A. , Oct. 1992
74. C.-D. Chung, “Classification of BPSK/QPSK signal in broadband noise” , in International Symposium on Communications '91 Record , Tainan, Taiwan, R.O.C. , Dec. 1991
75. C.-D. Chung and A. Polydoros, “Detection and hop-rate estimation of random FH signals via autocorrelation technique” , in IEEE MilCom ’91 Conference Record , McLean, Virginia, U.S.A. , Nov. 1991
76. C.-D. Chung, “Generalized likelihood-ratio detection of multiple-hop frequency hopping signals” , in IEEE MilCom '91 Conference Record , McLean, Virginia, U.S.A. , Nov. 1991
77. F. Ghazvinian, C.-D. Chung, and J. Wang, “Acquisition of the QPSK demodulator in the presence of interference” , in IEEE MilCom ’90 Conference Record , Monterey, California, U.S.A. , Oct. 1990
78. C.-D. Chung and A. Polydoros, “Epoch synchronization of random FH signals in broadband noise” , Monterey, California, U.S.A. , in IEEE MilCom '90 Conference Record , Oct. 1990
79. R. Godfrey, F. Ghazvinian, and C.-D. Chung, “Application of COSSAP in CLASS” , presented in the 3rd IEEE International Workshop on Computer-Aided Modeling Analysis and Design of Communication Links and Netwo , Torino, Italy , Sep. 1990
Patents:
1. 鄭豫傑,曾啟翔,鐘嘉德, “反向通道式盲通道估測方法” , 中華民國, 發明第I 532340號, May 2016
2. 鐘嘉德,陳維昌, “用於交錯式子載波配置頻譜預編碼式正交分頻多重存取系統之傳輸端電路” , 中華民國 I 五二三四六六, Feb. 2016
3. 曾啟翔、鐘嘉德, “訊號預編碼方法” , 中華民國專利編號：發明第I 502936號, Oct. 2015
4. C.-D. Chung, C.-L. Tsai, C.-L. Hsiao, and R. Jr. Chen, “Orthogonal frequency division multiplexing (OFDM) encoding and decoding methods and systems” , EU(France, Germany, Finland), EP patent no. 1853018, May 2014
5. 陳浩銘及鐘嘉德, “傳輸端電路” , 中華民國，發明第I 397269號, May 2013
6. 林維崙,鐘嘉德, “可適性正交多工調變機制之控制系統及方法” , 中華民國發明第I 三陸三五一七號專利, May 2012
7. 鐘嘉德、蔡長嵐、蕭昌龍、陳仁智, “正交分頻多工系統編碼與解碼的方法與系統” , 中華民國發明第I 三三陸五八零號專利, Jan. 2011
8. 蕭昌龍、蔡長嵐、陳仁智、鐘嘉德, “Orthogonal frequency division multiplexing (OFDM) encoding and decoding methods and systems” , US Patent No. 7974358 B2, Jul. 2011
9. 鐘嘉德, “Orthogonally-Multiplexed Orthogonal Amplitude Modulation Method” , US Patent No. 7158576B2, Jan. 2007
10. 鐘嘉德,廖宏祥, “正交多工開關鍵控振幅調變與正交多工開關鍵控相位調變之方法及裝置” , 中華民國發明第I 二四一零九四號專利, Oct. 2005
11. 鐘嘉德, “正交多工正交振幅調變方法及裝置” , 中華民國發明第I 一七三六五九號專利, Mar. 2003