蔡尚澕（Lawrence）於2005年8月在美國南加州大學（USC）獲得電機工程博士學位，指導教授為郭宗杰教授（C.-C. Jay Kuo）。於1999年6月至2002年7月期間，他在矽統科技（SiS）工作，參與DMT-ADSL系統的VLSI設計。自2005年9月至2007年1月，他在聯發科技（MTK）工作，參與MIMO-OFDM系統的VLSI設計和IEEE 802.11n的標準規格制定。自2007年2月以來，他加入了國立交通大學電機工程系，現任教授。他的研究興趣包括通信信號處理、統計信號處理和VLSI設計的信號處理。蔡博士於2002-2005年間獲得臺灣教育部提供的公費留學獎學金。2013年6月至2013年12月，他在普林斯頓大學電機工程系擔任訪問學者，由H. Vincent Poor教授指導。他是IEEE高級會員

• 校內榮譽事項    2017    電機學院傑出教學獎    電機學院
• 校內榮譽事項    2016    交通大學優良教學獎（教學觀摩代表）    交通大學
• 校內榮譽事項    2012    電機學院優良教學獎    電機學院
• 校內榮譽事項    2011    電機學院傑出教學獎    電機學院
• 校內榮譽事項    2010    績優導師    交通大學課外活動組
• 校外榮譽事項    1911    公費留學獎學金 2002-2005    教育部

• 通訊
• 信號處理
• 基頻晶片設計

• C.-C. Wang, Y -Y. He and S.-H. Tsai, “Energy efficient cloud radio access network with antenna arrays” accepted to be published in APSIPA Transactions Signal Inf. Process., 2022. 
• Y.-Y. He, H.-C. Chen and S.-H. Tsai, “Physical beam sharing multiuser systems: Beamforming designs and OTA testings,” in IEEE Transactions on Wireless Communications, vol. 21, no. 8, pp. 6285-6301, Aug. 2022
• D.-C. Ling, M.-S. Tsai, D.-A. Ling and S.-H. Tsai, “Predicting ventricular defibrillation results using learning models: A design practice and performance analysis,” IEEE Open Journal of Circuits and Systems, vol. 2, pp. 686-699 Nov. 2021. 
• C.-J. Wang, C.-K. Wen, S.-H. Tsai, Shi Jin and Geoffrey Ye Li, “Phase retrieval using expectation consistent signal recovery algorithm based on hypernetwork,” IEEE Transactions on Signal Processing, vol. 69, pp. 5770-5783, Oct. 2021. 
• G.-Y. Chen, S.-H. Tsai and X.-Q. Ser, “Precoder and spatial compression filter designs for uplink cloud radio access networks,” IEEE Access, vol. 9, pp. 143707-143720, Sep. 2021. 
• W.-T. Shih, C.-K. Wen, S.-H. Tsai and Shi Jin, “Fast antenna and beam switching method for mmWave handsets with hand blockage,” in IEEE Transactions on Wireless Communications, vol. 20, no. 12, pp. 8134-8148, Dec. 2021 
• T.-W., Tseng, K.-J. Yang, C.-C. Jay Kuo and S.-H. Tsai, “An interpretable compression and classification system: Theory and applications,” IEEE Access, vol. 8, pp. 143962-143974, Aug. 2020. 
• C.-J. Wang, C.-K. Wen, S.-H. Tsai and Shi Jin, “Phase retrieval with learning unfolded expectation consistent signal recovery algorithm,” IEEE Signal Processing Letter, vol. 27, pp. 780-784, Apr. 2020. 
• C.-J. Wang, C.-K. Wen, S.-H. Tsai and Shi Jin, “Decentralized expectation consistent signal recovery for phase retrieval,” IEEE Transactions on Signal Processing, vol. 68, pp. 1484-1499, Feb. 2020. 
• K.-C. Ho and S.-H. Tsai, ”A novel multiuser beamforming system with reduced complexity and beam optimizations,” in IEEE Transactions on Wireless Communications, vol. 18, no. 9, pp. 4544-4557, Sept. 2019 
• K.-J. Yang and S.-H. Tsai, ”Maximum likelihood and soft input soft output MIMO detection at a reduced complexity,” in IEEE Transactions on Vehicular Technology, vol. 67, no. 12, pp. 12389-12393, Dec. 2018
• C.-J. Wang, C.-K. Wen, Shi Jin and S.-H. Tsai, “Gridless channel estimation for mixed one-bit antenna array systems,” in IEEE Transactions on Wireless Communications, vol. 17, no. 12, pp. 8485-8501, Dec. 2018 
• C.-J. Wang, C.-K. Wen, Shi Jin and S.-H. Tsai, “Finite-alphabet precoding for massive MU-MIMO with low-resolution DACs,” in IEEE Transactions on Wireless Communications, vol. 17, no. 7, pp. 4706-4720, July 2018
• G.-L. Chen, S.-H. Tsai, and K.-J. Yang, “On performance of sparse fast Fourier transform and enhancement algorithm,” in IEEE Transactions on Signal Processing, vol. 65, no. 21, pp. 5716-5729, 1 Nov.1, 2017
• C.-H. Lin, S.-H. Tsai, and Y.-P. Lin, “On quantization for masked beamforming secrecy systems,” in IEEE Transactions on Wireless Communications, vol. 14, no. 10, pp. 5616-5628, Oct. 2015
• S.-H. Tsai and H. Vincent Poor, “Power allocation for artificial-noise secure MIMO precoding systems,” in IEEE Transactions on Signal Processing, vol. 62, no. 13, pp. 3479-3493, July1, 2014
• C.-H. Lin, S.-H. Tsai and Y.-P. Lin, “Secure transmission using MIMO precoding,” in IEEE Transactions on Information Forensics and Security, vol. 9, no. 5, pp. 801-813, May 2014 
• Y.-C. Hung and S.-H. Tsai, “PAPR analysis and mitigation algorithms for beamforming MIMO OFDM systems,” in IEEE Transactions on Wireless Communications, vol. 13, no. 5, pp. 2588-2600, May 2014
• Y.-C. Hung, S.-Y. Peng and S.-H. Tsai, “Sequence designs for interference mitigation in multi-cell networks,” in IEEE Transactions on Wireless Communications, vol. 13, no. 1, pp. 394-406, January 2014 
• J.-Y. Wu, C.-H. Hu, T.-Y. Wang, and S.-H. Tsai, "Design of low-overhead cooperative beamforming for information relaying in wireless sensor networks under imperfect quantized SNR of source-to-relay links," in IEEE Transactions on Signal Processing, vol. 61, no. 6, pp. 1368-1374, March15, 2013 
• K.-J. Yang, S.-H. Tsai and Gene C.H. Chuang, “MDC FFT/IFFT processor with variable length for MIMO-OFDM systems,” in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 21, no. 4, pp. 720-731, April 2013 
• P.-H. Lin and S.-H. Tsai, “Performance analysis and algorithm designs for transmit antenna selection in linearly precoded multiuser MIMO systems,” in IEEE Transactions on Vehicular Technology, vol. 61, no. 4, pp. 1698-1708, May 2012 
• S.-H. Tsai and Y.-P. Lin, “Lattice quantization of phases for equal gain transmission,” in IEEE Transactions on Signal Processing, vol. 60, no. 2, pp. 822-833, Feb. 2012
• S.-H. Tsai, “Equal gain transmission with antenna selection in MIMO communications,” in IEEE Transactions on Wireless Communications, vol. 10, no. 5, pp. 1470-1479, May 2011 
• C.-L. Chao, S.-H. Tsai, and T.-Y. Hsu,“Bit allocation schemes for MIMO equal gain precoding,” in IEEE Transactions on Wireless Communications, vol. 10, no. 5, pp. 1345-1350, May 2011 
• Layla Tadjpour, S.-H. Tsai and C.-C Jay Kuo “Simplified multiaccess interference reduction for MC-CDMA with carrier frequency offsets (CFO),” in IEEE Transactions on Vehicular Technology, vol. 59, no. 5, pp. 2543-2555, Jun 2010 
• Y.-H. Chang, S.-H. Tsai, Xiaoli Yu and C.-C. Jay Kuo, “Codeword design for Ultra-wideband (UWB) precoding,” in IEEE Transactions on Wireless Communications, vol. 9, no. 1, pp. 198-207, January 2010
• C.-C. Li, Y.-P. Lin, S.-H. Tsai and P. P. Vaidyanathan, “Optimization of transceivers with bit allocation to maximize bit rate for MIMO transmission,” in IEEE Transactions on Communications, vol. 57, no. 12, pp. 3556-3560, December 2009 
• S.-H. Tsai, "Transmit equal gain precoding in Rayleigh fading channels," in IEEE Transactions on Signal Processing, vol. 57, no. 9, pp. 3717-3721, Sept. 2009 
• S.-H. Tsai, Y.-P. Lin and C.-C Jay Kuo “Precoded multiuser OFDM transceiver in timing asynchronous environment,” in IEEE Transactions on Communications, vol. 55, no. 10, pp. 1863-1866, Oct. 2007 
• Layla Tadjpour, S.-H. Tsai and C.-C Jay Kuo "An approximately MAI-free multiaccess OFDM System in fast time-varying channels," in IEEE Transactions on Signal Processing, vol. 55, no. 7, pp. 3787-3799, July 2007 
• Y.-H. Chang, S.-H. Tsai, Xiaoli Yu and C.-C. Jay Kuo, “Ultrawideband transceiver design using channel phase precoding,” in IEEE Transactions on Signal Processing, vol. 55, no. 7, pp. 3807-3822, July 2007
• S.-H. Tsai, Y.-P. Lin and C.-C Jay Kuo “MAI-free MC-CDMA systems based on Hadamard- Walsh codes,” in IEEE Transactions on Signal Processing, vol. 54, no. 8, pp. 3166-3179, Aug. 2006 
• S.-H. Tsai, Y.-P. Lin and C.-C Jay Kuo, “An approximately MAI-free multi-access OFDM system in carrier frequency offset environment,” in IEEE Transactions on Signal Processing, vol. 53, no. 11, pp. 4339-4353, Nov. 2005

• C.-H. Ho and S.-H. Tsai, “RSAC: Regularized subspace approximation classifier for lightweight continuous learning”, in 25th International Conference on Pattern Recognition (ICPR), 2020 (Virtual) 
•  S.-H. Tsai, C.-H. Lai and X.-S. Li, “Frequency and time spreading for uplink URLLC transmission,” 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), Antwerp, Belgium, 2020, pp. 1-5 
•  W.-T. Shih, C.-K. Wen, Shi Jin and S.-H. Tsai, “Fast antenna and beam switching method for mmWave handsets with multiple subarrays,” ICC 2020 - 2020 IEEE International Conference on Communications (ICC), Dublin, Ireland, 2020, pp. 1-6
•  S.-H. Tsai, C.-H. Lai and X.-S. Li, “Frequency and time spreading for uplink URLLC transmission,” 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), Antwerp, Belgium, 2020, pp. 1-5 
•  S.-H. Tsai, M.-S. Tsai, H.-C. Huang and D.-C. Ash Ling, “Predicting defibrillation outcome in ventricular fibrillation using ECG with neural network algorithm,” 2019 IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, 2019, pp. 1-5 
•  S.-H. Tsai, M.-S. Tsai and Y.-C. Fan Jiang, “A novel system and statistical analysis for predicting defibrillation timing during ventricular fibrillation,” 2018 IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy, 2018, pp. 1-5 
•  C.-C. Chen, S.-H. Tsai, Y.-P. Lin and C.-H. Lin, “Resource allocation and minimum rate for precoded non-orthogonal multiple access,” in Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC) 2017, Kuala Lumpur 
•  Y.-P. Lin and S.-H. Tsai, “Beamforming with no instantaneous feedback for mmWave transmission,” 2017 IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Sapporo, Japan, 2017, pp. 1-5 
•  Y.-P. Lin and S.-H. Tsai, “THIC structures for RF beamforming,” 2017 IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Sapporo, Japan, 2017, pp. 1-5 
•  K.-C. Chen and S.-H. Tsai, “Reducing jitter effects for multiband bandpass sampling systems,” 2015 IEEE International Conference on Digital Signal Processing (DSP), Singapore, 2015, pp. 380-383 
•  C.-H. Lin, S.-H. Tsai and Y.-P. Lin, “Secure MIMO transmission via compressive sensing,” 2015 IEEE International Conference on Communications (ICC), London, UK, 2015, pp. 7383-7387
•  Y.-C. Hung, S.-Y. Peng and S.-H. Tsai, “Carrier frequency offset estimation algorithm for OFDM-based multi-cell systems,” Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2014 Asia-Pacific, Siem Reap, 2014, pp. 1-4
•  K.-J. Yang, S.-H. Tsai and H.-C. Hsu, “An LDPC decoder with SNR information,” in ICICS 2013, Tainan 
•  K.-T. Lin, K.-J. Yang, P.-H. Lin and S.-H. Tsai, ”Compressed sensing recovery algorithms and VLSI implementation,” in APSIPA 2013, Kaohsiung 
•  P.-H. Lin, S.-H. Tsai and Gene C.-H. Chuang, “A K-best orthogonal matching pursuit for compressive sensing,” 2013 IEEE International Conference on Acoustics, Speech and Signal Processing, Vancouver, BC, Canada, 2013, pp. 5706-5709 
•  C.-H. Lin, S.-H. Tsai and Gene C.-H. Chuang, “A Novel Sub-Nyquist Sampling of Sparse Wideband Signals,” 2013 IEEE International Conference on Acoustics, Speech and Signal Processing, Vancouver, BC, Canada, 2013, pp. 4628-4632 
•  K.-J. Yang, S.-H. Tsai, R.-C. Chang, Y.-C. Chen and Gene C.-H. Chuang “VLSI implementation of a low complexity 4×4 MIMO sphere decoder with table enumeration,” 2013 IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China, 2013, pp. 2167-2170 
•  Y.-C. Chen, S.-H. Tsai, K.-J. Yang, P.-F. Ho, K.-F. Tseng and H.-S. Chen “Vehicular signal transmission using power line communications,” in APSIPA 2012, Los Angeles 
•  Y. W.-Chen, S.-H. Tsai and P.-H. Lin, “Reduced complexity multimode antenna selection with bit allocation for zero-forcing receiver,” 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Kyoto, Japan, 2012, pp. 2937-2940 
•  C.-L. Chao, S.-H. Tsai and T.-Y. Hsu, ”A differential feedback scheme for equal gain transmission in temporally correlated channels,” 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Kyoto, Japan, 2012, pp. 3049-3052 
•  Y.-C. Chen, S.-H. Tsai and Gene Chuang, “A joint codebook design for beamforming systems with transmit antenna selection,” 2011 IEEE International Conference on Communications (ICC), Kyoto, Japan, 2011, pp. 1-5 
•  P.-H. Lin, S.-H. Tsai and Gene Chuang, “Transmit Antenna Selection with Linear Precoding in MIMO Multiuser Systems,” 2010 IEEE Global Telecommunications Conference GLOBECOM 2010, Miami, FL, USA, 2010, pp. 1-5
•  S.-H. Tsai, “An equal gain transmission in MIMO wireless communications,” 2010 IEEE Global Telecommunications Conference GLOBECOM 2010, Miami, FL, USA, 2010, pp. 1-5 
•  S.-J. Lee, S.-H. Tsai and P.-F. Ho, “A novel fast codebook search for MIMO beamforming systems”, in APSIPA ASC 2010, Singapore 
• Y.-T. Hung, S.-H. Tsai, Y.-C. Chen and Z.-Y. Huang, “A 0.18um 3.25-5.6GHz and 6-10.4GHz band switchable low noise amplifier,” 2010 IEEE International Conference on Ultra-Wideband, Nanjing, China, 2010, pp. 1-4
• S.-H. Tsai and Gene Chuang, “Transmit equal gain beamforming using lattice quantizers,” 2010 IEEE Wireless Communication and Networking Conference, Sydney, NSW, Australia, 2010, pp. 1-5
• C.-L. Chao, S.-H. Tsai and T.-Y. Hsu, “A bit allocation scheme for MIMO equal gain precoders,” 2010 IEEE 71st Vehicular Technology Conference, Taipei, Taiwan, 2010, pp. 1-5 
• S.-H. Tsai, “Equal gain beamforming in Rayleigh fading channels,” in APSIPA ASC 2009, Sapporo
• S.-H. Tsai; P.-A. Ting; C.-M. Chen; C.-Y. Kao, “Reduced complexity MIMO equal gain precoding,” 2009 IEEE International Symposium on Circuits and Systems, Taipei, Taiwan, 2009, pp. 681-684 
• C.-C. Li, Y.-P. Lin, S.-H. Tsai and P. P. Vaidyanathan, “Optimal zero-forcing transceiver design for maximizing bit rate subject to a total transmit power constraint,” in European Conference on Signal Processing 2008, Lausanne 
• Y.-H. Chang, S.-H. Tsai, Xiaoli Yu and C.-C. Jay Kuo, “Performance enhancement of channel-phase precoded Ultra-wideband (CPP-UWB) systems by rake receivers,” IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, New Orleans, LA, USA, 2008, pp. 1-5 
• Layla Tadjpour, S.-H. Tsai and C.-C. Jay Kuo, “Complexity Reduction of maximum-likelihood multiuser detection (ML-MUD) receivers with carrier interferometry codes in MC-CDMA,” 2008 IEEE International Conference on Communications, Beijing, China, 2008, pp. 800-804 
• Y.-H. Chang, S.-H. Tsai, Xiaoli Yu and C.-C. Jay Kuo, “On robustness of Ultra-Wideband (UWB) precoding against timing jitter,” IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference, Washington, DC, USA, 2007, pp. 3063-3067
• Y.-H. Chang, S.-H. Tsai, Xiaoli Yu and C.-C. Jay Kuo, “Codeword length optimization for the CPPUWB systems,” 2006 IEEE 63rd Vehicular Technology Conference, Melbourne, VIC, Australia, 2006, pp. 1869-1873 
• Layla Tadjpour, S.-H. Tsai and C.-C. Jay Kuo, "SPCp1-03: Orthogonal codes for MAI-Free MC-CDMA with carrier frequency offsets (CFO)," IEEE Globecom 2006, San Francisco, CA, USA, 2006, pp. 1-5 
• Y.-H. Chang, S.-H. Tsai and C.-C. Jay Kuo, “Design and analysis of Channel-Phase-Precoded Ultra Wideband (CPPUWB) systems,” IEEE Wireless Communications and Networking Conference, 2006. WCNC 2006., Las Vegas, NV, USA, 2006, pp. 866-871
• S.-H. Tsai, Y.-P. Lin and C.-C. Jay Kuo, “A precoded multiuser OFDM (PMU-OFDM) transceiver for time asynchronous systems,” GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., St. Louis, MO, USA, 2005, pp. 5 pp.-2218 
• Layla Tadjpour, S.-H. Tsai and C.-C. Jay Kuo, “Mobile multiuser access with approximately MAI-free PMU-OFDM transceiver design,” Conference Record of the Thirty-Ninth Asilomar Conference on Signals, Systems and Computers, 2005., Pacific Grove, CA, USA, 2005, pp. 1451-1455
• S.-H. Tsai, Y.-P. Lin and C.-C. Jay Kuo, “Code priority of multiuser OFDM systems over frequency asynchronous environment,” VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005., Dallas, TX, USA, 2005, pp. 1103-1107
• Layla Tadjpour, S.-H. Tsai and C.-C. Jay Kuo, “Approximately MAI-free multiuser OFDM transceiver in time-variant environment,” in SPIE Defense & Security Symposium 2005, Orlando 
• S.-H. Tsai, Y.-P. Lin and C.-C. Jay Kuo, “Design of MAI-free MC-CDMA systems over frequency-selective fading channels via codeword selection,” Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005., Philadelphia, PA, USA, 2005, pp. iii/873-iii/876 Vol. 3 
• S.-H. Tsai, Xiaoli Yu and C.-C. Jay Kuo, “Channel diagonalization using a full-rate space-time block code,” IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., Dallas, TX, USA, 2004, pp. 2951-2955
• M.-O. Pun, S.-H. Tsai and C.-C. Jay Kuo, “Joint maximum likelihood estimation of carrier frequency offset and channel in uplink OFDMA systems,” IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., Dallas, TX, USA, 2004, pp. 3748-3752 Vol.6
• S.-H. Tsai, Y.-P. Lin and C.-C. Jay Kuo, “Performance evaluation of approximately MAI-free multiaccess OFDM transceiver,” IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004, Los Angeles, CA, USA, 2004, pp. 588-592 Vol. 1 
• M.-O. Pun, S.-H. Tsai and C.-C. Jay Kuo, “An EM-based maximum likelihood joint carrier frequency offset and channel estimation for uplink of OFDMA systems,” IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004, Los Angeles, CA, USA, 2004, pp. 598-602 Vol. 1
• S.-H. Tsai, Y.-P. Lin and C.-C. Jay Kuo, “Enhanced performance for an approximately MAI-free multiaccess OFDM transceiver by code selection,” IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004, Los Angeles, CA, USA, 2004, pp. 4335-4339 Vol. 6 
• S.-H. Tsai, Y.-P. Lin and C.-C. Jay Kuo, “Combined bit swap and power gain adaptation for error rate equalization in DMT Systems,” 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, Montreal, QC, Canada, 2004, pp. iv-1065 
• M.-O. Pun, S.-H. Tsai and C.-C. Jay Kuo, “Uplink synchronization of multi-user OFDMA systems,” in SPIE Defense & Security Symposium 2004, Orlando
• S.-H. Tsai, Xiaoli Yu and C.-C. Jay Kuo, “A symbol by symbol maximum likelihood detection with reduced complexity over multicarrier systems,” in SPIE Defense& Security Symposium 2004, Orlando 
• S.-H. Tsai, Y.-P. Lin and C.-C. Jay Kuo, “A repetitively coded multicarrier CDMA (RCMC-CDMA) transceiver for multiuser communications,” 2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733), Atlanta, GA, USA, 2004, pp. 959-964 Vol.2
• S.-H. Tsai and Y.-P. Lin, “Performance evaluation of optimal DMT transceiver for ADSL application,” 2003 IEEE International Symposium on Circuits and Systems (ISCAS), Bangkok, Thailand, 2003, pp. II-II

• C.-C Jay Kuo, Shang-Ho Tsai, Layla Tadjpour and Yu-Hao Chang, “Precoding Techniques for Wireless Communications,” Springer Sep. 2008