Su Yu Ted: Recent Research Results 1. Generalized opportunistic communications: Cooperation, competition and cognition in broadband wireless networks Cognitive radio based spread spectrum techniques-system design and performance analysis [8] Distributed spectrum sensing [15] and cooperative signal detection [20] Radio resource management for cognitive multiuser multimedia communications [7,13,14,17] Physical layer network cod assisted bidirectional wireless communications: signal detection and performance analysis [24] 2. Inner transceiver design: Precoding, synchronization, channel estimation, interference cancellation and suppression Channel estimation and precoding for MIMO-OFDM and correlated MIMO systems [1,18,25] Synchronization and channel estimation in low SNR region Joint synchronization and interference suppression [21,23] Interference management in a two-tier network [16] Sequence design for wireless applications [26, 27] 3. Advanced error-control schemes and their performance High throughput parallel-decodable codes [2,3,5,6,29] Hybrid ARQ protocols for MIMO networks that takes into account transmission scheduling, power/rate control, precoding and cooperative relay/coding [10,28] Generalized belief propagation for binary networks in graph codes and statistical inference [4] Performance of block-coded communication systems in channels with memory [11,12] Monte Carlo based stochastic decoding algorithms [22] 4. Biomedical signal processing Multichannel ECG waveform coding and transmission [9] 2007-2008 Publications 1. D. C.-H. Chiang and Y. T. Su, "Frequency estimator for MIMO-OFDM systems,” Wireless Personal Commun., Jan. 2007. 2. Y.-X. Zheng and Y. T. Su, "A turbo coding system for high speed communications,” IEEE Trans. Wireless Commun. Oct. 2007. 3. T. D.-H. Huang, C.-Y. Chang, Y.-X. Zheng and Y. T. Su, “Product codes and parallel concatenated product codes,” in Proc.IEEE WCNC 2007, Feb. 2007. 4. Y.-C. Chen and Y. T. Su, "Constraint relaxation and annealed belief propagation for binary networks," in Proc. IEEE ISIT2007, June 2007. 5. Y.-X. Zheng and Y. T. Su, “A codeword weight lower bound for a class of tail-biting turbo codes,” in Proc. IEEE ISIT2007, June 2007. 6. S.-Y. Wang, Y.-X. Zheng and Y. T. Su, “A novel decoding scheduling for LDPC codes,” in Proc. IEEE APWCS 2007, Aug. 2007. 7. Y.-B. Lin, T.-H. Chiu, Y. T. Su, and M. S. Kao, “An Iterative resource allocation algorithm for cooperative multimedia communications,” in Proc. IEEE VTC-2007 Fall, Sep. 2007. 8. J.-Y. Liu and Y. T. Su, “Performance analysis of transform domain communication systems in the presence of spectral mismatches,” in Proc. IEEE MilCom2007, Oct. 9. 2007. W.-Y. Wong and Y. T. Su, “New approaches for electrocardiogram signal coding,” in Proc. NTC, Nov. 2007. 10. C. P.-C. Kung and Y. T. Su, “Performance analysis of an adaptive hybrid ARQ system,” in Proc. NTC, Nov. 2007. 11. C. M. Lee, Y. T. Su and L.-D. Jeng, "Performance analysis of block codes in hidden Markov channels,” IEEE Trans. Commun. Jan. 2008. 12. C. M. Lee and Y. T. Su, “Performance of block-coded land mobile satellite systems,” Int. J. Commun. Syst. Network, vol. 26, pp.251-267, 2008. 13. Y.-S. Lu and Y. T. Su, “Dynamic resource allocation for relay-based OFDMA systems,” in Proc. APWC2008, Sendi, Japan, Aug. 2008. 14. C.-L. Weng, Y.-B. Lin, and Y. T. Su, “Resource allocation for MIMO-OFDMA based wireless mobile networks,” in Proc. APWC2008, Sendi, Japan, Aug. 2008. 15. Y.-L. Shei and Y. T. Su, “A sequential test based cooperative spectrum sensing scheme for cognitive radios,” in Proc. IEEE PIMRC2008, Canes, France, Sep. 2008. 16. K. Naik, D. S. L. Wei, Y. T. Su, and N. Shiratori, “A random graph-based model to analyze packet interference between frequency hopping systems with an application to Bluetooth,” Computer Communications, vol. 21, no. 14, pp. 3286-3291, 2008. 17. Y.-B. Lin, T.-H. Chiu, and Y. T. Su, “Optimal and near-optimal resource allocation algorithms for OFDMA networks,” to appear in IEEE Trans. Wireless Commun. Manuscripts under review or in preparation 18. Y.-C. Chen and Y. T. Su, “MIMO channel estimation in correlated fading environments” 19. Y.-C. Chen and Y. T. Su, “Turbo equalization of nonlinear TDMA satellite signals” 20. J.-Y. Liu, C.-M. Lee and Y. T. Su, “Blind link quality estimation for decodeand-forward communications” 21. Y.-C. Liu, K.-C. Lin, and Y. T. Su, “Initial synchronization for multi-cell OFDMA systems” 22. C.-M. Lee and Y. T. Su, “Stochastic decoding of Reed-Solomon codes” 23. K.-C. Lin and Y. T. Su, “Robust initial ranging for OFDMA systems: Channel assignment, code structure and detection” 24. J.-Y. Liu and Y. T. Su, “Demodulations and performance analysis for bidirectional wireless network with physical layer network coding” 25. J. Chen and Y. T. Su, “MIMO transceiver design with compressed channel information” 26. C.-W. Chen and Y. T. Su, “An unified approach for zero correlation zone sequence design” 27. K.-C. Lin and Y. T. Su, “A BCH code based preamble design for OFDMA networks” 28. Y.-S. Lu, C.-L. Weng, and Y. T. Su, “OFDMA-based multiuser ARQ protocols and their performance” 29. Y.-X. Zheng and Y. T. Su, “On the design of parallel decodable turbo codes: An interleaver’s perspective” Current Research Interests 1. Generalized opportunistic communications Efficient preamble, transform domain spreading sequences and protocol designs for cognitive radio (CR) based spread spectrum systems that minimize the mismatch probability. Optimal and near optimal radio resource allocation schemes for non-orthogonal channel based systems with latency and fairness constraints. Combining resource allocation, scheduling and routing for both single-hop/single antenna and multiple-hop/MIMO networks. Distributed-cooperative spectrum sensing schemes using quantized local information and compressive sampling/detection. 2D and 3D location-spectrum and noise temperature map reconstruction for exploring new degrees of freedom in signal transmission. Interference control for two-tier location-aware femto cell systems that minimizes intra-tier and cross-tier interference for optimal cell coverage and maximum network capacity. Game theoretic communications. approach for opportunistic and resource optimized 2. Inner Transceiver Design: Precoding, Synchronization, Channel Estimation, Interference Cancellation and Suppression Reduced-complexity nonlinear MIMO transceiver design and performance analysis.. Efficient cell search and link acquisition methods for hierarchical multicell OFDMA systems. Network synchronization for hierarchical and ad hoc networks. 3. Advanced Error-Control Schemes and Sequence Design HARQ protocols for multiuser MIMO-OFDMA systems. The protocols shall take into account transmission scheduling, power/rate control, precoding and cooperative relay/coding. Serialized LDPC code decoding: structures, scheduling and convergence analysis. Annealed and randomized belief propagation algorithms for binary networks. Preamble sequences design for OFDMA networks.