Professors

蘇柏青 Su, Borching

  • Associate Professor, Department of Electrical Engineering, National Taiwan University
  • Ph.D. California Institute of Technology, 2008
  • M.S. National Taiwan University, 2001
  • B.S. National Taiwan University, 1999
  • Office : MD 516
  • TEL : +886-2-33663720
  • Email :
  • Office Hour : Wednesday 10:00am~12:00pm (101學年度第一學期, Fall 2012)
  • Website :
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Major Research Areas

Signal processing for communications

Research Summary

  • Signal processing for communication systems: channel estimation, channel equalization, time and frequency synchronization, blind signal processing.
  • Waveform and transceiver design for 5G communication systems.
  • Beamforming and precoding for massive MIMO systems.

    Borching Su was born in Tainan, Taiwan in 1978. He received the B.S. and M.S. degrees in electrical engineering and communication engineering, both from National Taiwan University (NTU), Taipei, Taiwan, in 1999 and 2001, respectively, and the Ph.D. degree in Electrical Engineering from the California Institute of Technology (Caltech), Pasadena, CA, USA, in 2008. He joined NextWave Broadband, Inc., San Diego, CA, USA in 2008 where he participated in physical-layer system design of the company's WiMax mobile chipset products. 

     

    In August 2009, Dr. Su joined National Taiwan University and is currently an assistant professor. His current research interests include signal processing for communication systems, particularly blind channel estimation.

    Dr. Su received Charles H. Wilts prize from Caltech for his Ph.D. thesis on blind channel estimation.

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Journal articles & book chapters

1. Syu-Siang Wang; Payton Lin; Yu Tsao; Jeih-weih Hung; Borching Su, “Suppression by Selecting Wavelets for Feature Compression in Distributed Speech Recognition” , IEEE/ACM Transactions on Audio, Speech, and Language Processing , Vol. vol. 26, no. 3 , 564-579, Mar. 2018

2. Yenming Huang ; Borching Su, “Circularly Pulse-Shaped Precoding for OFDM: A New Waveform and Its Optimization Design for 5G New Radio” , IEEE Access , Vol. vol. 6 , 44129-44146, Aug. 2018

3. Ming-Fu Tang ; Yi-Ying Huang ; Borching Su , “Beam-Time Block Coding With Joint User Grouping and Beamforming for FDD Massive MIMO Systems” , IEEE Access , Vol. vol. 6 , 52519-52530, Sep. 2018

4. Shao-Yu Lien, Shin-Lin Shieh, Yenming Huang, Borching Su, Yung-Lin Hsu, Hung-Yu Wei, “5G New Radio: Waveform, Frame Structure, Multiple Access, and Initial Access” , IEEE Communications Magazine , Vol. vol. 5, no. 6 , 64-71, Jun. 2017

5. Po-Chih Chen; Borching Su; Yenming Huang, “Matrix Characterization for GFDM: Low Complexity MMSE Receivers and Optimal Filters” , IEEE Transactions on Signal Processing , Vol. vol. 65, no. 18 , 4940-4955, Sep. 2017

6. Syu-Siang Wang; Alan Chern; Yu Tsao; Jeih-weih Hung; Xugang Lu; Ying-Hui Lai; Borching Su, “ Wavelet Speech Enhancement Based on Nonnegative Matrix Factorization” , IEEE Signal Processing Letters , Vol. vol. 23, no. 8 , 1101-1105, Aug. 2016

7. Ming-Fu Tang, Borching Su, “Downlink Precoding for Multiple Users in FDD Massive MIMO Without CSI Feedback” , Journal of Signal Processing Systems , pp. 1-13-, Nov. 2015

8. Borching Su and P. P. Vaidyanathan, “New Blind Block Synchronization for Transceivers Using Redundant Precoders” , IEEE Transactions on Signal Processing , Vol. vol. 56, no. 12, , pp. 5987-6002-, Dec. 2008

9. Borching Su and P. P. Vaidyanathan, “Comments on 'Performance Analysis of a Deterministic Channel Estimator for Block Transmission Systems With Null Guard Intervals'” , IEEE Transactions on Signal Processing , Vol. vol. 56, no. 3 , pp. 1308 - 1309-, Mar. 2008

10. Borching Su and P. P. Vaidyanathan, “Performance Analysis of Generalized Zero-Padded Blind Channel Estimation Algorithms” , IEEE Signal Processing Letter , Vol. vol. 14, no. 11 , pp. 789-792-, Nov. 2007

11. Borching Su and P. P. Vaidyanathan, “Subspace-based Blind Channel Identification For Cyclic Prefix Systems Using Few Received Blocks” , IEEE Transactions on Signal Processing , Vol. vol. 55, no. 10 , pp. 4979-4993-, Oct. 2007

12. Borching Su and P. P. Vaidyanathan, “Generalized Signal Richness Preservation Problem and Vandermonde-form Preserving Matrices” , IEEE Transactions on Signal Processing , Vol. vol. 55, no. 5 , pp. 2239-2250-, May 2007

13. Borching Su and P. P. Vaidyanathan, “A Generalized Algorithm for Blind Channel Identification with Linear Redundant Precoders” , EURASIP Journal on Advances in Signal Processing , Vol. vol. 2007 , Article ID 25672, 13 pages-, Jan. 2007

14. Borching Su and P. P. Vaidyanathan, “Theoretical Issues on LTI Systems Which Preserve Signal Richness” , IEEE Transactions on Signal Processing , Vol. vol. 54, no. 3 , pp. 1104-1113-, Mar. 2006

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Conference & proceeding papers:

1. Jui-Hsien Hsieh; Ming-Fu Tang; Mao-Chao Lin; Borching Su, “The effect of carrier frequency offsets on an IDMA-UFMC system” , 2017 Eighth International Workshop on Signal Design and Its Applications in Communications (IWSDA) , Sapporo, Japan , Sep. 2017

2. Po-Chih Chen, Borching Su, “Filter Optimization of Out-of-Band Radiation with Performance Constraints for GFDM Systems” , IEEE Workshop on Signal Processing Advances for Wireless Communications (SPAWC) 2017 , Sapporo, Japan , Jul. 2017

3. Chih-Li Chen, Borching Su, “Beamforming Design for Per-Antenna Power Constraints in Multiuser MISO SWIPT Systems” , IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium 2017 , Incheon, South Korea , Aug. 2017

4. Jwo, Yu-ren Tang, Ming-fu Su, Borching, “Beamforming Designs for Per-Antenna Power Constrained Downlink MISO Using Partial CSIT” , IEEE Workshop on Signal Processing Advances for Wireless Communications (SPAWC) 2017 , Jul. 2017

5. Ching-Yun Chu; Shao-Ting Tseng; Jing-Zhi Gao; Yuan-Pu Chen; Yu-Chen Chang; Chien-Wei Tseng; Tzu-Yuan Huang; Bo-Syun Hu; Borching Su; Ta-Shun Chu; Yu-Jiu Wang, “A fully-integrated Ka-band 4TX/4RX phased-array transceiver IC in 65nm CMOS” , 2016 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) , Aug. 2016

6. Ming-Fu Tang, Chih-Chih Chen, and Borching Su, “Downlink Path-Based Precoding in FDD Massive MIMO Systems Withouth CSI Feedback ” , IEEE SAM , Rio de Janeiro, Brazil , Jul. 2016

7. Yueh Ting Tsai; Borching Su; Yu Tsao; Syu-Siang Wang, “Adaptive subspace-constrained diagonal loading” , 2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA) , Jeju, South Korea , Dec. 2016

8. Ming-Fu Tang, Szuyu Wang, and Borching Su, “Beamforming Designs for Multiuser Transmissions in FDD Massive MIMO Systems Using Partial CSIT” , IEEE Sensor Array and Multichannel Signal Processing Workshop 2016 , Rio de Janerio, Brazil , Jul. 2016

9. Chin-Wei Hsu; Ming-Fu Tang; Borching Su, “Power allocation for downlink path-based precoding in multiuser FDD massive MIMO systems without CSI feedback” , 50th Asilomar Conference on Signals, Systems and Computers , Pacific Grove, CA, USA , Nov. 2016

10. Ming-Fu Tang, Chih-Chi Chen, and Borching Su, “Downlink Path-Based Precoding in FDD Massive MIMO Systems Withouth CSI Feedback” , IEEE Sensor Array and Multichannel Signal Processing Workshop 2016 , Rio de Janerio, Brazil , Jul. 2016

11. Ming-Fu Tang and Borching Su, “Filter optimization of low out-of-subband emission for universal-filtered multicarrier systems” , IEEE International Conference on Communications Workshop , Kuala Lumpur, Malaysia , May 2016

12. Yenming Huang, Borching Su, and I-Kang Fu, “Heterogeneous LTE downlink spectrum access using embedded-GFDM” , Proc. IEEE International Conference on Communications Workshop , Kuala Lumpur, Malaysia , May 2016

13. Borching Su, “Semiblind channel estimation for OFDM/OQAM systems assisted by zero-valued pilots” , 2015 IEEE International Conference on Digital Signal Processing (DSP) , Singapore, Singapore , Jul. 2015

14. Syu-Siang Wang, Hsin-Te Hwang, Ying-Hui Lai, Yu Tsao, Xugang Lu, Hsin-Min Wang, Borching Su, “Improving denoising auto-encoder based speech enhancement with the speech parameter generation algorithm” , 2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA) , Hong Kong , Dec. 2015

15. Borching Su and Kai-Han Tseng, “Cramer-Rao Bound for Blind Channel Estimation in Cyclic Prefixed MIMO-OFDM Systems With Few Received Symbols” , 48th Asilomar Conference on Signals, Systems, and Computers , Pacific Grove, CA, USA , Nov. 2014

16. Ming-Fu Tang, Meng-Ying Lee, Borching Su, Chia-Pang Yen, “Beamforming-Based Spatial Precoding in FDD Massive MIMO Systems” , 48th Asilomar Conference on Signals, Systems, and Computers , Pacific Grove, CA, USA , Nov. 2014

17. Wei-Jhung Ding and Borching Su, “A new method for DOA estimation with mutual coupling of an antenna array” , 48th Asilomar Conference on Signals, Systems, and Computers , Pacific Grove, CA, USA , Nov. 2014

18. Syu-Siang Wang, Payton Lin, Dau-Cheng Lyu, Yu Tsao, Hsin-Te Hwang, Borching Su, “Acoustic Feature Conversion Using a Polynomial Based Feature Transferring Algorithm” , 9th International Symposium on Chinese Spoken Language Processing (ISCSLP) , Singapore , Sep. 2014

19. Yen-Ming Huang, Chia-Hao Chien, Borching Su, and Ling-Chi Wu, “A Hopping Method of Resource Allocation for Device-to-Device Discovery” , The 11th IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium , Ping-Tung, Taiwan , Aug. 2014

20. Borching Su, “Subspace-based Blind and Semiblind Channel Estimation in OFDM Systems with Virtual Carriers Using Few Received Symbols” , 2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC). , Toronto, Canada , Jun. 2014

21. Borching Su and Min-Yu Wang, “Joint Channel Estimation Methods in Carrier Aggregation OFDM System” , 79th IEEE Vehicular Technology Conference , Seoul, Korea , May 2014

22. Feng-Jie Yeh and Borching Su, “Subspace-based Blind Channel Estimation for Cyclic Prefixed MIMO-OFDM Systems Using Few Received Blocks” , 9th International Conference on Information, Communications and Signal Processing , Tainan, Taiwan , Dec. 2013

23. Borching Su and Si-Syuan Huang, “Subspace-based Blind Channel estimation in CP Systems by Repeated Use of Remodulated Received blocks” , 20th European Signal Processing Conference (EUSIPCO) , Bucharest, Romania , Aug. 2012

24. Borching Su and P. P. Vaidyanathan, “Blind block synchronization algorithms in cyclic prefix systems” , IEEE International Symposium on Circuits and Systems (ISCAS) , Seattle, WA, U.S.A. , May 2008

25. Borching Su and P. P. Vaidyanathan, “A Semi-Blind Pilot-Assisted Channel Estimation Algorithm in OFDM Systems” , Proc. 41st Asilomar Conference on Signals, Systems, and Computers , Pacific Grove, CA, U.S.A. , Nov. 2007

26. Borching Su and P. P. Vaidyanathan, “On the Persistency of Excitation for Blind Channel Estimation in Cyclic Prefix Systems” , IEEE International Symposium on Circuits and Systems (ISCAS) , New Orleans, LA, U.S.A. , May 2007

27. Borching Su and P. P. Vaidyanathan, “New Algorithms for Blind Block Synchronization in Zero-Padding Systems” , IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) , Honolulu, HI, U.S.A. , Apr. 2007

28. Borching Su and P. P. Vaidyanathan, “Generalized Subspace-based Algorithms For Blind Channel Estimation In Cyclic Prefix Systems” , Fortieth Asilomar Conference on Signals, Systems and Computers (ACSSC) , Pacific Grove, CA, U.S.A. , Oct. 2006

29. Borching Su and P. P. Vaidyanathan, “Generalized Subspace-based Algorithms For Blind Channel Estimation In Cyclic Prefix Systems” , Fortieth Asilomar Conference on Signals, Systems and Computers (ACSSC) , Pacific Grove, CA, U.S.A. , Oct. 2006

30. Borching Su and P. P. Vaidyanathan, “Vandermonde-form Preserving Matrices and the Generalized Signal Richness Preservation Problem” , Fortieth Asilomar Conference on Signals, Systems and Computers (ACSSC) , Pacific Grove, CA, U.S.A. , Oct. 2006

31. Borching Su and P. P. Vaidyanathan, “A Generalized Deterministic Algorithm for Blind Channel Identification with Filter Bank Precoders” , IEEE International Symposium on Circuits and Systems (ISCAS) , Kos, Greece , May 2006

32. Borching Su and P. P. Vaidyanathan, “Extension of the Signal Richness Preservation Problem in LTI Systems” , Thirty-Ninth Asilomar Conference on Signals, Systems and Computers (ACSSC) , Pacific Grove, CA, U.S.A. , Oct. 2005

33. Borching Su and P. P. Vaidyanathan, “Distributed Antipodal Paraunitary Precoders for OFDM Systems” , IEEE Pacific Rim Conference on Communications, Computers and signal Processing (PACRIM) , Victoria, BC, Canada , Aug. 2005

34. Borching Su and P. P. Vaidyanathan, “Necessary and Sufficient Conditions for LTI Systems to Preserve Signal Richness” , IEEE International Symposium on Circuits and Systems (ISCAS) , Kobe, Japan , May 2005

35. P. P. Vaidyanathan and Borching Su, “Staying Rich: LTI Systems Which Preserve Signal Richness” , IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) , Philadelphia, PA, U.S.A. , Mar. 2005

36. P. P. Vaidyanathan and Borching Su, “Remarks on certain new methods for blind identification of FIR channels” , Thirty-Eighth Asilomar Conference on Signals, Systems and Computers (ACSSC) , Pacific Grove, CA, U.S.A. , Nov. 2004

37. Borching Su and Shyh-Kang Jeng, “Multi-Timbre Chord Classification Using Wavelet Transform and Self-Organized Map Neural Networks” , IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) , Salt Lake City, UT, U.S.A. , May 2001

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