Erchin Serpedin

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Research Thrusts

1)  Signal Processing with Applications in:
      * Wireless Communications
      * Image Processing
      * Biomedical Engineering and Bioinformatics
      * Radar and Sonar

2) Wireless Sensor Networks
    *  Synchronization, localization and tracking
    *  Distributed estimation and detection

3) Cognitive Radio Networks
    * Resource Allocation
    * OFDM-based random access schemes
    * Radio Frequency Spectrum Cartography

4) Computational Biology, Bioinformatics and Genomics
     * Inference of Genomic and Proteomic Networks
     * Comparative Genome Assembly
     * Systems Biology

5) Information Theory 
       * Information Theoretic Inequalities
       * Aspects of the interplay between information theory, statistics and signal processing

6) Biomedical Signal Processing
       * MRI Image Processing
       
7) Radar (Antenna Array) Signal Processing
       * Estimation and detection
       * SAR imaging 

8) Computational Statistics, Optimization, Machine Learning


9)  Pure Mathematics (hobby)

Research Areas Addressed and Some Representative Papers

Information Theory

S. Park, E. Serpedin, and K. Qaraqe, “On the equivalence between Stein identity and de Bruijn identity, IEEE Trans. On Information Theory, vol. 58, no. 12, pp. 7045 - 7067, Dec. 2012.

S. Park, E. Serpedin, and K. Qaraqe, “Gaussian Assumption: the Least Favorable but the Most Useful,” IEEE Signal Processing Magazine, (accepted for publication-to be published in the May 2013 issue). Available online: arxiv.org/pdf/1211.4852.pdf

S. Park, E. Serpedin, and K. Qaraqe, An alternative proof of an extremal inequality, IEEE Trans. On Information Theory, Sept. 2012,submitted. Available online: arxiv.org/pdf/1201. 6681v5.pdf

S. Park, E. Serpedin, and K. Qaraqe, “A Unifying Variational Perspective on Some Fundamental Information Theoretic Inequalities,” IEEE Trans. on Information Theory, Sept. 2012 (submitted). Available online: arxiv.org/pdf/1211.4795.pdf

S. Park, E. Serpedin, and K. Qaraqe, “An Information Theoretic Perspective Over an Extremal Entropy Inequality,” ISIT 2012 IEEE International Symposium on Information Theory, MIT-Boston, MA, pp. 1266 - 1270, July 2012.

Bioinformatics, Genomics, Proteomics and Systems Biology


W. Zhao, E. Serpedin, and E. Dougherty, “Spectral Preprocessing for Clustering Time Series Gene Expressions,” Eurasip Journal on Bioinformatics and Systems Biology, Volume 2009 (2009), Article ID 713248, 10 pages.

W. Zhao, E. Serpedin, and E. Dougherty, “ Inferring Connectivity of Genetic Regulatory Networks Using Information Theoretic Criteria,” IEEE/ ACM Transactions on Computational Biology and Bioinformatics, vol. 5, no. 2, pp. 262 - 274, April-June 2008.

A. Noor, E. Serpedin, M. Nounou and H. Nounou, ROBNCA: Robust Network Component Analysis for Recovering Transcription Factor Activities, Bioinformatics-Oxford, 2013, Oct. 1; 29(19): 2410-8.

F.Hsu, E. Dougherty, Y. Chen and E. Serpedin, Estimating conditional probabilities for the detection of unfavorable copy number alterations in targeted terapy, IEEE Trans. on Biomedical Engineering, vol. 60, no. 10, Oct. 2013.

F. Hsu, E. Serpedin, Y. Chen and E. Dougherty, Evaluating dynamic effects of copy number alterations on gene expressions using a single transcription model, IEEE Trans. on Biomedical Engineering, vol. 59, no. 10, Oct. 2012

F. Hsu, E. Serpedin, TH Hsiao, AJ Bishop, ER Dougherty and Y Chen, Reducing confounding and suppression effects in TCGA data: an integrated analysis of chemotherapy response in ovarian cancer, BMC Genomics, 2012, 13 Suppl 6:S13.

W. Zhao, E. Serpedin, and E. Dougherty, “Identifying Cell Cycle Involved Genes By Combining Gene Expression Analysis and Prior Knowledge,” Journal on Bioinformatics and Systems Biology, Volume 2009 (2009), Article ID 683463, 9 pages.

W. Zhao, E. Serpedin, and E. Dougherty, “Inferring gene regulatory networks from time series data using the minimum description length principle,” Bioinformatics, 1 September 2006; 22: 2129 - 2135.

W. Zhao, K. Ajepong, E. Serpedin, and E. Dougherty, “Detecting Periodic Genes from Irregularly Sampled Gene Expressions for Drosophila Melanogaster,” EURASIP Journal on Bioinformatics and Systems Biology, Volume 2008, Article ID 769293, 8 pages.

W. Zhao, K. Ajepong, E. Serpedin, and E. Dougherty, “Identifying Drosophila cell-cycle regulated genes from irregular microarray data,” ICASSP 2008, March 2008.

W. Zhao, E. Serpedin, and E. Dougherty, “Recovering Genetic Regulatory Networks from Chromatin Immunoprecipitation and Steady-State Microarray Data,” EURASIP Journal on Bioinformatics and Systems Biology, Volume 2008, Article ID 248747, 12 pages.

Wireless Networks

J.S. Kim, E. Serpedin, and D. R. Shin, “A Handoff Trigger and Network Selection Algorithms for Load-Balancing Handoff in CDMA-WLAN Integrated Networks,” EURASIP Journal on Wireless Communications and Networking, vol. 2008, Article ID 136939, 14 pages, 2008. doi:10.1155 /2008/136939, December 2008.

Q. Chaudhari, E. Serpedin, and K. Qaraqe, “On Maximum Likelihood Estimation of Clock Offset and Skew in Networks With Exponential Delays,” IEEE Trans. on Signal Processing, vol. 56, no. 4, pp. 1685 - 1697, April 2008.

Q. Chaudhari and E. Serpedin, “Energy Efficient Estimation of Clock Offset for Inactive Nodes in Wireless Sensor Networks,” IEEE Transactions on Information Theory, vol. 56, no. 1, Jan. 2010.

J. Kim and E. Serpedin, “Improved Particle Filtering Based Estimation of the Number of Competing Stations in IEEE 802.11 Networks,” IEEE Signal Processing Letters, vol. 15, no. 1, pp. 87-90, January 2008.

J. Kim, D.-R. Shi, and E. Serpedin, “Adaptive multiuser receiver with joint channel and time delay estimation of CDMA signals based on the square-root unscented filter,” Digital Signal Processing Journal, Elsevier, Volume 19 , Issue 3 (May 2009), Pages 504-520, 2009 ISSN:1051-2004 .

Q. Chaudhari, E. Serpedin, and K. Qaraqe, “On minimum variance unbiased estimation of clock offset in wireless networks,” IEEE Trans. On Information Theory, vol. 56, no. 6, June 2010.

Y.C. Wu, K.-W. Yip, T.-S. Ng, and E. Serpedin, “Maximum-likelihood frame synchronization for IEEE 802.11a WLANs on frequency-selective fading channels with unknown sampling phase offset,” IEEE Trans. on Wireless Communications, Volume 4, Issue 6, Nov. 2005, pp. 2751 - 2763.

Wireless Sensor Networks

E. Serpedin and Q. Chaudhari, Clock Synchronization for Wireless Sensor Networks: Parameter Estimation, Performance Benchmarks and Protocols, Cambridge University Press, 2009 IBSN: 9780521764421, 260 pages.

K. Noh, Y.C. Wu and E. Serpedin, “Adaptive Signal Processing Techniques for Synchronization of Wireless Sensor Networks,” Chapter in the Handbook: Adaptive Processing in Wireless Communications, (editor: M. Ibnkahla) CRC Press, pp. 373-410, 2008.

I. K. Rhee, J. Lee*, J. Kim*, E. Serpedin, and Yik-Chung Wu, “Clock Synchronization in Wireless Sensor Networks: An Overview,” Sensors Journal, 2009, 9, 1-x manuscripts; doi:10.3390/sensors90x0000x, ISSN 1424-8220.

K. Noh* and E. Serpedin, “A New Approach for Time Synchronization in Wireless Sensor Networks: Pairwise Broadcast Synchronization,” IEEE Trans. on Wireless Communications, vol. 7, no. 6, Sept. 2008.

Q. Chaudhari* and E. Serpedin, “On maximum likelihood estimation of clock phase, skew and drift in networks with exponentially distributed delays,” EURASIP Journal on Advances in Signal Processing, Volume 2008, Article ID 219458, 6 pages.

I. Sari*, K. Noh*, Q. Chaudhari*, E. Serpedin, and B. Suter, “On the Joint Synchronization of Clock Offset and Skew in RBS-Protocol,” IEEE Trans. on Communications, vol. 56, no. 5, pp. 500-503, May 2008.

K. Noh*, Q. Chaudhari*, E. Serpedin, and B. Suter, “Novel Clock Phase Offset and Skew Estimation Using Two-Way Timing Message Exchanges for Wireless Sensor Networks,” IEEE Trans. on Communications, Volume 55, Issue 4, April 2007, pp.: 766 - 777.

Design of Ultra Wideband Transceivers

B. Kelleci*, T. Fischer*, A. Karsilayan, K. Shi* and E. Serpedin, “Adaptive Narrowband Interference Suppression in Multi-Band OFDM Receivers,” Circuits, Systems and Signal Processing Journal, Birkhauser, vol. 27, no. 4, August 2008, pp. 475-489.

T. Fischer*, B. Kelleci*, K. Shi*, E. Serpedin, and A. Karsilayan, “ An Analog Approach to Suppressing In-Band Narrowband Interference in UWB Receivers,” IEEE Trans. On Circuits and Systems-Part I, Volume 54, Issue 5, May 2007, pp. 941 - 950.

K. Shi*, Y. Zhou*, B. Kelleci*, T. W. Fischer*, E. Serpedin and A. I. Karsilayan, “Impacts of Narrowband Interference on OFDM-UWB Receivers: Analysis and Mitigation,” IEEE Trans. on Signal Processing, Volume 55, Issue 3, March 2007, pp. 1118 - 1128.

Y. Zhou*, A. I. Karsilayan and E. Serpedin, “Sensitivity of Multi-Band ZP-OFDM Ultra Wideband Receivers to Synchronization Errors,” IEEE Trans. on Signal Processing, Volume 55, Issue 2, Jan. 2007, Page(s):729 - 734.

H.-G. Jeon and E. Serpedin, “Walsh Coded Training Signal Aided Time Domain Channel Estimation in MIMO-OFDM Systems,” IEEE Trans. on Communications, vol. 56, no. 9, pp. September 2008.

H.-G. Jeon and E. Serpedin, “A Novel Simplified Channel Tracking Method for MIMO-OFDM Systems with Null Sub-carriers,” Signal Processing, Elsevier, Volume 88, Issue 4, April 2008, Pages 1002-1016.

J. Chen, Y.C. Wu*, T.S. Ng and E. Serpedin, “Multi-user frequency offsets estimation in OFDMA systems,” book chapter in Orthogonal Frequency Division Multiple Access (OFDMA), to be published by Auerbach Publications, CRC Press, Taylor&Francis Group, 2009.

MIMO Communications

H.-G. Jeon and E. Serpedin, “Walsh Coded Training Signal Aided Time Domain Channel Estimation in MIMO-OFDM Systems,” IEEE Trans. on Communications, vol. 56, no. 9, pp. September 2008.

H.-G. Jeon and E. Serpedin, “A Novel Simplified Channel Tracking Method for MIMO-OFDM Systems with Null Sub-carriers,” Signal Processing, Elsevier, Volume 88, Issue 4, April 2008, Pages 1002-1016.

Y.C. Wu, and E. Serpedin, “Data-aided Maximum Likelihood Symbol Timing Estimation in MIMO Correlated Fading Channels,” Wireless Communications and Mobile Computing Journal (WCMC), Special Issue on “Multiple-Input Multiple-Output (MIMO) Communications”, Wiley, vol. 4, no. 7, pp. 773-791, Nov. 2004.

Y.-C. Wu, S.-C. Chan, and E. Serpedin, “Symbol-Timing Estimation in Space-Time Coding Systems based on Orthogonal Training Sequences,” IEEE Trans. on Wireless Communications, Volume 4, Issue 2, March 2005, pp. 603 - 613.

Y. C. Wu and E. Serpedin, “Design and Analysis of Feedforward Symbol Timing Estimators Based on the Conditional Maximum Likelihood Principle,” IEEE Trans. on Signal Processing, Volume 53, Issue 5, May 2005, pp. 1908 - 1918.

Synchronization of Communication Systems

Y. Wang and E. Serpedin, New Advances In Synchronization Of Digital Communication Receivers, VDM Verlag, ISBN-10: 3639072103, 188 pages, Aug. 2008 (research monograph).

C. Georghiades and E. Serpedin, Synchronization, Book Chapter in The Handbook of Communications, CRC Press, 2nd edition, 2002.

Y.C. Wu, and E. Serpedin, “Unified analysis of a class of blind feedforward symbol timing estimators employing second-order statistics,” IEEE Trans. on Wireless Communications, Volume 5, Issue 4, April 2006, pp. 737 - 742.

K. Shi and E. Serpedin, “Fast Timing Recovery for Linearly and Nonlinearly Modulated Systems,” IEEE Trans. on Vehicular Technology, Volume 54, Issue 6, Nov. 2005, pp. 2017 - 2023.

K. Shi, Y. Wang, and E. Serpedin, “On the Design of Digital Blind Feedforward Jitter Free Timing Recovery Schemes for Linear Modulations,” IEEE Trans. on Communications, vol. 52, no. 9, Sept. 2004.

P. Ciblat, E. Serpedin, and Y. Wang, “On a blind fractionally-sampled carrier frequency offset estimator for noncircular transmissions,” IEEE Signal Processing Letters, vol. 10, no. 4, pp. 89-92, April 2003.

Y.Wang and E. Serpedin, “A Class of Blind Phase Recovery Techniques for Large QAM Modulations: Estimators and Bounds,” IEEE Signal Processing Letters, vol. 9, no. 10, pp. 301-304, Oct. 2002.

Y.Wang, E. Serpedin, and P. Ciblat, “Optimal blind carrier recovery for burst M-PSK transmissions,” IEEE Transactions on Communications, vol. 51, no. 9, pp. 1571-1581, Sept. 2003.

OFDM-Based Communication Systems

J. Chen, Y.C. Wu, T.S. Ng and E. Serpedin, “Multi-user frequency offsets estimation in OFDMA systems,” book chapter in Orthogonal Frequency Division Multiple Access (OFDMA), to be published by Auerbach Publications, CRC Press, Taylor&Francis Group, 2009.

J. Chen, Y.C. Wu, T.S. Ng and E. Serpedin, “Training sequence design for channel and frequency estimation in multi-user OFDM sys tems,” book chapter in Orthogonal Frequency Division Multiple Access (OFDMA), to be published by Auerbach Publications, CRC Press, Taylor& Francis Group, 2009.

Y. Zhou, Y.C. Wu, and E. Serpedin, “Effects of diversity on carrier frequency acquisition in OFDM systems ,” invited book chapter in OFDM and OFDMA with linear diversity for future wireless communications, BenTham Science Publishing, ed. K. N. Le, 2009.

K. Shi and E. Serpedin, “A Robust Metric for Coarse Frame and Carrier Synchronization for OFDM Systems” IEEE Trans. on Wireless Communications, vol. 3, no. 3, pp. 1271-1284, July 2004.

P. Ciblat and E. Serpedin, “A fine blind frequency offset estimator for OFDM /OQAM systems,” IEEE Trans. on Signal Processing, vol. 52, no.1, pp. 291-296, January 2004.

H.-G. Jeon and E. Serpedin, “Walsh Coded Training Signal Aided Time Domain Channel Estimation in MIMO-OFDM Systems,” IEEE Trans. on Communications, vol. 56, no. 9, pp. September 2008.

H.-G. Jeon and E. Serpedin, “A Novel Simplified Channel Tracking Method for MIMO-OFDM Systems with Null Sub-carriers,” Signal Processing, Elsevier, Volume 88, Issue 4, April 2008, Pages 1002-1016.

Electronic Interception and Recognition, and Cognitive Radios

P. Ciblat, P. Loubaton, E. Serpedin, and G. B. Giannakis, “Asymptotic Analysis of Blind Cyclic Correlation Based Symbol-Rate Estimators,” IEEE Trans. on Information Theory, vol. 48, no. 7, pp. 1922-1934, July 2002.

P. Ciblat, P. Loubaton, E. Serpedin, and G. B. Giannakis, “Performance analysis of blind carrier frequency offset estimators for noncircular transmissions through frequency-selective channels,” IEEE Transactions on Signal Processing, vol. 50, no. 1, pp. 130-140, Jan. 2002.

Y. Wang, E. Serpedin and P. Ciblat, “An Alternative Blind Feedforward Symbol Timing Estimator Using Two Samples per Symbol,” IEEE Trans. on Communications, vol. 51, no. 9, pp. 1451-1455, Sept. 2003.

P. Ciblat and E. Serpedin, “A fine blind frequency offset estimator for OFDM /OQAM systems,” IEEE Trans. on Signal Processing, vol. 52, no.1, pp. 291-296, January 2004.

K. Shi, Y. Wang, and E. Serpedin, “On the Design of Digital Blind Feedforward Jitter Free Timing Recovery Schemes for Linear Modulations,” IEEE Trans. on Communications, vol. 52, no. 9, Sept. 2004.

Y. Wang, E. Serpedin, and P. Ciblat, “Blind Feedforward Cyclostationarity Based Timing Estimation for Linear Modulations,” IEEE Trans. on Wireless Communications, vol. 3, no. 3, pp. 709-715, May 2004.

P. Ciblat, E. Serpedin, and Y. Wang, “On a blind fractionally-sampled carrier frequency offset estimator for noncircular transmissions,” IEEE Signal Processing Letters, vol. 10, no. 4, pp. 89-92, April 2003.

Y.Wang, E. Serpedin, and P. Ciblat, “Optimal blind carrier recovery for burst M-PSK transmissions,” IEEE Transactions on Communications, vol. 51, no. 9, pp. 1571-1581, Sept. 2003.

Antenna Array Signal Processing

A. Reza* and E. Serpedin, “Incoherent DOA estimation in uniform antenna arrays with inordinate spacing using a subband hopping approach,” Circuits, Systems, and Signal Processing, Birkhauser, vol. 27, no. 3, ISSN 0278-081X (print), 1531-5878 (online), June 2008.

A. Shapoury* and E. Serpedin, “Wideband array processing with constant beam pattern beyond the spatial sampling limit,” ATOM-N 2008 Conference, 4th edition of the International Conference on Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies, SPIE Proceedings, Sept. 2008.

A. Shapoury, Q. Chaudhari, and E. Serpedin, “On error magnitudes under spatial aliasing of wideband arrays with incoherent combining,” 2007 IEEE International Conference on Signal Processing and Communications (ICSPC 2007), Nov. 2007.

H.-G. Jeon and E. Serpedin, “Walsh Coded Training Signal Aided Time Domain Channel Estimation in MIMO-OFDM Systems,” IEEE Trans. on Communications, vol. 56, no. 9, pp. September 2008.

H.-G. Jeon and E. Serpedin, “A Novel Simplified Channel Tracking Method for MIMO-OFDM Systems with Null Sub-carriers,” Signal Processing, Elsevier, Volume 88, Issue 4, April 2008, Pages 1002-1016.

Y.-C. Wu, S.-C. Chan, and E. Serpedin, “Symbol-Timing Estimation in Space-Time Coding Systems based on Orthogonal Training Sequences,” IEEE Trans. on Wireless Communications, Volume 4, Issue 2, March 2005, pp. 603 - 613.

Nonlinear Signal Processing

G. B. Giannakis and E. Serpedin, “Linear Multichannel Blind Equalizers of Nonlinear FIR Volterra Channels,” IEEE Transactions on Signal Processing, vol. 45, no. 1, pp. 67-81, January 1997.

G. B. Giannakis and E. Serpedin, “A Bibliography on Nonlinear System Identification,” Signal Processing, Elsevier Science, vol. 81, no. 3, pp. 533-580, March 2001.

E. Serpedin and G. B. Giannakis, “On Linear Equalization of Multiple FIR Volterra Channels,” Proc. of the 30th Asilomar Conf. on Signals, Systems, and Computers, vol. 1, pp. 315-319, Pacific Grove, CA, Nov. 1996.

G. B. Giannakis and E. Serpedin, “Blind Equalizers of Multichannel Linear-Quadratic FIR Volterra Channels,” Proc. of the 8th IEEE Signal Processing Workshop on Statistical Signal and Array Processing, pp. 371-374, Corfu, Greece, June 1996.

G. B. Giannakis and E. Serpedin, “Linear Multichannel Blind Equalizers of Nonlinear FIR Volterra Channels,” Proc. of the 30th Annual Conference on Information Sciences and Systems, Princeton Univ., vol. II, pp. 1153-1158, Princeton, NJ, March 1996.

Cyclostationary Signal Processing

P. Ciblat, P. Loubaton, E. Serpedin, and G. B. Giannakis, “Asymptotic Analysis of Blind Cyclic Correlation Based Symbol-Rate Estimators,” IEEE Trans. on Information Theory, vol. 48, no. 7, pp. 1922-1934, July 2002.

A. Chevreuil, E. Serpedin, P. Loubaton, and G. B. Giannakis, “Blind Channel Identification and Equalization Using Non-Redundant Periodic Modulation Precoders: Performance Analysis,” IEEE Transactions on Signal Processing, vol. 48, no. 6, pp. 1570-1586, June 2000.

G. B. Giannakis and E. Serpedin, “Blind Identification of ARMA Channels with Periodically Modulated Inputs,” IEEE Transactions on Signal Processing, vol. 46, no. 11, pp. 3099-3104, Nov. 1998.

E. Serpedin and G. B. Giannakis, “Blind Channel Identification and Equalization with Modulation Induced Cyclostationarity”, IEEE Transactions on Signal Processing, vol. 46, no. 7, pp. 1930-1944, July 1998.

Y. Wang, E. Serpedin, P. Ciblat, and P. Loubaton, “Performance Analysis of a Class of Non-Data Aided Carrier Frequency Offset and Symbol Timing Delay Estimators For Flat-Fading Channels,” IEEE Transactions on Signal Processing, vol. 50, no. 9, pp. 2295-2305, Sept. 2002.

E. Serpedin, F. Panduru, I. Sari and G. B. Giannakis, “A bibliography on cyclostationary signal processing,” Signal Processing, Elsevier, Volume 85, Issue 12, December 2005, Pages 2233-2303.

Spectral Estimation and Analysis

Y.Wang, E. Serpedin, and P. Ciblat, “Optimal blind carrier recovery for burst M-PSK transmissions,” IEEE Transactions on Communications, vol. 51, no. 9, pp. 1571-1581, Sept. 2003.

Y. Wang, E. Serpedin and P. Ciblat, “Optimal Blind Nonlinear Least- Squares Carrier Phase and Frequency Offset Estimation for General QAM Modulations,” IEEE Trans. on Wireless Communications, vol. 2, no. 5, pp. 1040-1054, Sept. 2003.

Y. Wang, E. Serpedin, P. Ciblat, and P. Loubaton, “Performance Analysis of a Class of Non-Data Aided Carrier Frequency Offset and Symbol Timing Delay Estimators For Flat-Fading Channels,” IEEE Transactions on Signal Processing, vol. 50, no. 9, pp. 2295-2305, Sept. 2002.

P. Ciblat, P. Loubaton, E. Serpedin, and G. B. Giannakis, “Asymptotic Analysis of Blind Cyclic Correlation Based Symbol-Rate Estimators,” IEEE Trans. on Information Theory, vol. 48, no. 7, pp. 1922-1934, July 2002.

P. Ciblat, P. Loubaton, E. Serpedin, and G. B. Giannakis, “Performance analysis of blind carrier frequency offset estimators for noncircular transmissions through frequency-selective channels,” IEEE Transactions on Signal Processing, vol. 50, no. 1, pp. 130-140, Jan. 2002.

E. Serpedin, P. Ciblat, and G. B. Giannakis, “Performance Analysis of Blind Carrier Phase Estimators for General QAM Constellations,” IEEE Trans. on Signal Processing, vol. 49, no. 8, pp. 1816-1823, August 2001.