
Saied
Hemati, Ph.D., SMIEEE Assistant
Professor Department
of Electrical and Computer Engineering The
University of Idaho BEL209,
875 Perimeter Drive MS 1023 Email: shemati at uidaho.edu Phone: 2088856591 Announcements:
· I encourage bright and hardworking
students and postdocs to apply for admission in my research group. Those
applicants who have external funding are most welcomed to apply. 
Research Interests:
1. Novel Integrated Circuit Design for Communications Systems
2. Information Theory and Channel Coding Applications
3. LowPower/HighSpeed Analog/Digital Integrated Circuit Design
Books:
S. Hemati, Iterative Decoding in Analog VLSI,
Dynamics and Circuits,
VDM Verlag, ISBN: 9783639175394,
2009.
US Patents:
1. W. Gross, F. LeducPrimeau,
S. Hemati, and S. Mannor, “A Method and System for
Decoding,” US patent (Pending) filed in March 2011, US Patent
application:20110231731.
2. A. Banihashemi and S.
Hemati, “Full CMOS MinSum Analog Iterative Decoders,” US Patent No: 7,769,798;
issued on August 3, 2010.
Journal Publications:
17. K. Cushon, S. Hemati, C. Leroux, S. Mannor, and W. J. Gross, “HighThroughput EnergyEfficient
LDPC Decoders Using Differential Binary Message Passing,” accepted for
publication in the IEEE Transactions on Signal Processing in November
2013.
16. A. Ciobanu, S. Hemati, and W. J. Gross, “Adaptive Multiset Stochastic Decoding of Nonbinary LDPC Codes,” IEEE
Transactions on Signal Processing, vol. 61, no.16, pp.41004113, August 2013.
15. F. LeducPrimeau, S. Hemati, S. Mannor,
and W. J. Gross, “Relaxed HalfStochastic Belief Propagation,” IEEE
Transactions on Communications, vol. 61, no. 5, pp.1648 1659, May 2013.
14. G. Sarkis, S. Hemati, S. Mannor, and
W. J. Gross, “Stochastic Decoding of LDPC Codes over GF(q),” IEEE
Transactions on Communications, vol. 61, no. 3, pp. 939 950, March 2013.
13. F. LeducPrimeau, S. Hemati, S. Mannor,
and W. J. Gross, “Dithered Belief Propagation Decoding,” IEEE Transactions
on Communications, vol. 60, no. 8, pp. 20422047, August 2012.
12. G. He, G. Sarkis, S. Hemati, W. J. Gross, and B. Bai,
“LowComplexity Channel Likelihood Estimation for NonBinary Codes and HighOrder
Modulations,” IEEE Communications Letters, vol. 16, no. 6, pp. 801804,
June 2012.
11. K. Cushon, C. Leroux, S. Hemati, S. Mannor, and W. J. Gross, “A MinSum Iterative Decoder with
Pulse Width Message Encoding,” IEEE Transactions on Circuits and SystemsII,
vol. 58, no. 11, pp. 893897, November 2010.
10. C. Leroux, S. Hemati, S. Mannor, and
W. J. Gross, “Stochastic Chase Decoding of ReedSolomon Codes,” IEEE
Communications Letters, vol. 14, no. 9, pp. 863865, September 2010.
9. S. Sharifi Tehrani, A. Naderi, G.A.
Kamendje,
S. Hemati, S. Mannor, and W. J. Gross,
“MajorityBased Tracking Forecast Memories for Stochastic LDPC Decoding,” IEEE
Transactions on Signal Processing, vol. 58, no. 9, pp. 48834896, September
2010.
8. S. Hemati and A. Yongacoglu, “On the Dynamics of Analog MinSum Iterative
Decoders, an Analytical Approach,” IEEE Transactions on Communications,
vol. 58, no. 8, pp. 22252231, August 2010.
7. S. Hemati and A. Yongacoglu, “Dynamics of Analog Decoders for Different
Message Representation Domains,” IEEE Transactions on Communications,
vol. 58, no. 3, pp. 721723, March 2010.
6. N. Mobini, A. H. Banihashemi, and S.
Hemati, “A Differential Binary MessagePassing LDPC Decoder,” IEEE
Transactions on Communications, vol. 57, no. 9, pp. 25182523, September
2009.
5. S. Hemati and
A. H. Banihashemi, “Convergence Speed and Throughput
of Analog Decoders,” IEEE Transactions on Communications, vol. 55, no.5,
pp. 833836, May 2007.
4. S. Hemati, A. H. Banihashemi, and C. Plett, “A
0.18 µm Analog MinSum Iterative Decoder for a (32,8) LowDensity ParityCheck
(LDPC) Code,” IEEE Journal of SolidState Circuits, vol. 41, no. 11, pp.
25312540, Nov. 2006.
3. S. Hemati and A. H. Banihashemi, “Dynamics and Performance Analysis of Analog
Iterative Decoding for LowDensity ParityCheck (LDPC) Codes,” IEEE
Transactions on Communications, vol. 54, no.1, pp. 6170, Jan. 2006.
2. M. R. Yazdani, S. Hemati, and A. H. Banihashemi,
“Improving Belief Propagation on Graphs with Cycles,” IEEE Communications
Letters, vol. 8, no. 1, pp. 5759, Jan. 2004.
1. S. Feiz and S. Hemati, “Dispersion Evaluation in Optical
Waveguides,” Esteghlal, J. of Engineering,
vol. 18, no.1, pp. 2331, 1999.
Awards and Honors:
11. ReSMiQ (Regroupement Stratègique en Microsystéme du Quèbec)
Fellowship, September 2009.
10. Canadian Space Agency NSERC (Natural Sciences
and Engineering Research Council of Canada) Postdoctoral Fellowship Supplement
Award, April 2006.
9. The Senate Medal for Outstanding Academic
Achievements, November 2005.
8. The prestigious NSERC (Natural Sciences and
Engineering Research Council of Canada) Postdoctoral Fellowship in Integrated
Circuit Design, March 2005.
7. Ontario Graduate Scholarship (OGS), April 2004.
6. Ontario Graduate Scholarship in Science and Technology
(OGSST), September 2003.
5. CITO (Communications and Information Technology
Ontario) Research Excellence Scholarship, May 2003.
4. Best Poster Award, 2002 CITO (Communications and
Information Technology Ontario) Knowledge Network Conference, Ottawa, Canada,
Oct. 2002.
3. CITO (Communications and Information Technology
Ontario) Graduate Scholarship, 2002.
2. Carleton University Graduate Scholarship,
20012005.
1. Integrated Electronics Industry (iei) Golden Medal Paper Award, 1998.
Conference Papers:
43. R. Heloir, C. Leroux, S. Hemati, M. Arzel, and
W. Gross, “Stochastic Chase Decoder for ReedSolomon Codes,” in Proceedings
of the 10th IEEE NEWCAS Conference, pp. 16, Montreal, Canada, 2012.
42. F. LeducPrimeau, S.
Hemati, W. Gross, and S. Mannor, “Lowering Error
Floors Using Dithered Belief Propagation," in Proceedings of the IEEE Globecom 2010 Communication Theory Symposium, pp. 16,
Miami, FL, USA.
41. G. Sarkis, S. Hemati,
W. Gross, and S. Mannor, “Relaxed HalfStochastic
Decoding of LDPC Codes over GF(q),” in Proceedings of Annual Allerton Conference on Communication, Control and Computing
, pp. 3641, University of Illinois, 2010.
40. F. LeducPrimeau, S.
Hemati, W. Gross, and S. Mannor, “A Relaxed
HalfStochastic Iterative Decoder for LDPC Codes,” in Proceedings of IEEE Globecom 2009 Communication Theory Symposium, pp. 16,
Nov. 2009, Honolulu, Hawaii, USA.
39. S. Hemati and A. Yongacoglu,
“On the Dynamics of Analog MinSum Iterative Decoders, an Analytical
Approach," in Proceedings of CWIT 2009, Ottawa, Canada, pp. 2931,
May 1315, 2009.
38. S. Hemati and A. Yongacoglu,
“Effects of Message Representation Domain on the Dynamics of Analog Decoders,”
in Proceedings of the 2008 Analog Decoding Workshop, Utah, US, July
2008.
37. N. Mobini, A. H. Banihashemi, and S. Hemati, “A Differential Binary
MessagePassing LDPC Decoder,” in Proceedings of the IEEE Globecom 2007 Communication Theory Symposium,
Washington, DC, US, pp. 15611565, Nov. 2007.
36. S. Hemati and A. Yongacoglu,
“On the Dynamics of Analog MinSum Iterative Decoders, an Analytical Approach,”
in Proceedings of the 2007 IEEE International Symposium on Information
Theory, ISIT2007, Nice, France, June, 2007.
35. S. Hemati and A. Yongacoglu,
“Stability and Singularity in Analog MinSum Decoders,” in Proceedings of
the 6th Analog Decoding Workshop, Montreal, Canada, May 2007.
34. N. Mobini, A. H. Banihashemi, and S. Hemati, “Differential Decoding of LDPC
Codes with Binary MessagePassing,” in Proceedings of the 6th Analog
Decoding Workshop, Montreal, Canada, May 2007.
33. S. Hemati and A. Yongacoglu,
“On the Solvability of the Dynamic Equations for Analog MinSum Decoders,” in Proceedings
of the 5th Analog Decoding Workshop, Turin, Italy, pp. 4750, June 2006.
32. S. Hemati and A. H. Banihashemi,
“Convergence Speed and Throughput of Analog Iterative Decoders for LowDensity
ParityCheck (LDPC) Codes,” in Proceedings of the 4th International
Symposium on Turbo Codes, Munich, Germany, April 3  7, 2006.
31. S. Hemati and A. H. Banihashemi,
“A LowVoltage 4Input CMOS Analog Maximum WinnerTakeAll Chip for MinSum
Analog Iterative Decoders,” The CMC Microsystems 2006 Annual Symposium,
Ottawa, October 2006.
30. S. Hemati and A. H. Banihashemi,
“Convergence Speed and Throughput of Analog Decoders,” in Proceedings of
CWIT 2005, Montreal, Quebec, Canada, pp. 235238, June 5  8, 2005.
29. S. Hemati, A. H. Banihashemi,
and C. Plett, “An 80Mb/s 0.18μm CMOS Analog
MinSum Iterative Decoder for a (32,8,10) LDPC Code,” in Proceedings of the
IEEE Custom Integrated Circuits Conference, CICC 2005, San Jose,
California, pp. 240 243, Sept. 18 21, 2005.
28. S. Hemati, A. H. Banihashemi,
and C. Plett, “A HighSpeed Analog MinSum Iterative
Decoder,” in Proceedings of the IEEE International Symposium on Information Theory,
ISIT 2005, Adelaide, Australia, pp. 17681772, Sept. 4  9, 2005.
27. S. Hemati, A. H. Banihashemi,
and C. Plett, and N. Ogbebor,
“An Analog Min Sum Decoder for a (32,8) LDPC Code,” in Proceedings of CWIT
2005, Montreal, Quebec, Canada, pp. 203206, June 5  8, 2005.
26. S. Hemati and A. H. Banihashemi,
“A Novel CMOS Analog MinSum Iterative Decoder,” Microsystems Research and
Development in Canada 2004, Ottawa, Canada, Sept. 2004.
25. S. Hemati and A.H. Banihashemi,
“Comparison between ContinuousTime Asynchronous and DiscreteTime Synchronous
Iterative Decoding,” in Proceedings of the IEEE Globecom
2004, Dallas, Texas, USA, pp. 356360, Nov. 29  Dec. 3, 2004.
24. S. Hemati and A.H. Banihashemi,
“On the Dynamics of ContinuousTime Analog Iterative Decoders,” in Proceedings
of the 2004 IEEE International Symposium on Information Theory, ISIT2004,
Chicago, US, p. 262, June 27July 2, 2004.
23. S. Hemati and A. H. Banihashemi,
“A CurrentMode Maximum WinnerTakeAll Circuit with Low Voltage Requirement
for MinSum Analog Iterative Decoders,” in Proceedings of the 10th IEEE
International Conference on Electronics, Circuits and Systems, ICECS2003, Sharjah, UAE, pp. 57, December 14 17, 2003.
22. S. Hemati and A. H. Banihashemi,
“On the Dynamics of Analog Asynchronous Iterative Decoders,” in Proceedings
of the 41st Annual Allerton Conference on
Communication, Control and Computing, University of Illinois, US, pp.
16791687, October 13, 2003.
21. S. Hemati and A. H. Banihashemi,
“Novel Circuits for Implementing HighDegree ParityCheck and Variable Nodes in
Full CMOS Analog MinSum Iterative Decoders,” 2nd Analog Decoding Workshop,
Zurich, Switzerland, September 2003.
20. S. Hemati and A. H. Banihashemi, “Analog Asynchronous Iterative Decoding,
Different Dynamics with Better Performance,” 2nd Analog Decoding Workshop,
Zurich, Switzerland, September 2003.
19. S. Hemati and A. H. Banihashemi,
“Full CMOS MinSum Analog Iterative Decoder,” in Proceedings of the 2003
IEEE International Symposium on Information Theory, ISIT2003, Yokohama,
Japan , p. 347, June 29July 4, 2003.
18. M. R. Yazdani, S.
Hemati, and A. H. Banihashemi, “Improving Belief
Propagation on Graphs with Cycles,” in Proceedings of the 2003 Canadian
Conference on Information Theory, CWIT2003, Waterloo, Ontario, Canada, pp.
235238, May 1821, 2003.
17. S. Hemati and M. Emadi,
“A Method for Analyzing HigherOrder Dispersion in Optical Fiber,” in Proceedings
of the 2003 IEEE Canadian Conference on Electrical and Computer Engineering,
CCECE 2003, Montreal, Canada, pp. 289292, May 4 7, 2003.
16. F. Farahmand and S.
Hemati, “An Algorithm Based on Evolutionary Programming for Training Artificial
Neural Networks with NonConventional Neurons,” in Proceedings of the 2003
IEEE Canadian Conference on Electrical and Computer Engineering, CCECE 2003,
Montreal, Canada, pp. 18451848, May 4 7, 2003.
15. S. Hemati and A. H. Banihashemi,
“Iterative Decoding in Analog CMOS,” in Proceedings of the 13th ACM Great
Lakes Symposium on VLSI, ACM GLSVLSI 2003, Washington D.C., USA, pp. 1520,
April 2729, 2003.
14. S. Hemati and A. H. Banihashemi,
“LowCost HighPerformance Analog Iterative Decoders,” 2002 Cito Knowledge Network Conference, Ottawa, Canada, Oct.
2002. Awarded the best paper award
13. S. Hemati and A. H. Banihashemi,
“Advanced Coding Schemes in Modern WDM Networks,” 2002 Cito
Knowledge Network Conference, Ottawa, Canada, Oct. 2002.
12. A. H. Banihashemi and
S. Hemati, “Decoding in Optics,” in Proceedings of the 2002 IEEE
International Symposium on Information Theory, ISIT 2002, Lausanne,
Switzerland, p. 231, June 30July 5, 2002.
11. S. Hemati and A. H. Banihashemi,
“New Analog VLSI Circuits for Iterative Decoding,” in Proceedings of the
21st Biennial Symposium on Communications, Queen’s University, Kingston,
Ontario, Canada, pp. 261263, June 25, 2002.
10. A. H. Banihashemi and
S. Hemati, “Electrooptical Implementation of Iterative Decoding Algorithms,”
in Proceedings of the 21st Biennial Symposium on Communications, Queen’s
University, Kingston, Ontario, Canada., pp. 474475, June 25, 2002.
9. S. Hemati and A. H. Banihashemi,
“Towards Photonic Decoders,” in Technical digest of the Eighth Microptics Conference, MOC’01, Osaka, Japan, pp.
218221, October 2001.
8. S. Hemati, “WDM Optical Components”, Eighth
Iranian Conference on Electrical Engineering, ICEE2000, Isfahan University
of Technology, Isfahan, Iran, May 2000.
7. A. Adibi, V. Tahani, S. Hemati, and F. Farahmand,
“Neural Networks with Non Conventional Synapses,” in Proceedings of the
Eighth Iranian Conference on Electrical Engineering, ICEE2000, Isfahan,
Iran, pp. 6875, May 2000.
6. A. Adibi and S. Hemati,
“A Novel Implementation of the Hebbian Neurons by
Subthreshold MOSFETs in the Presence of Mobile Ions,” in Proceedings of the
Seventh Iranian Conference on Electrical Engineering, ICEE99, Iran
Telecommunication Research Center, Tehran, Iran, pp. 4148, May 1999.
5. S. Feiz and S. Hemati,
“ Precise Formula for Zero Material Dispersion Analysis of the Optical Fiber
Core,” in Proceedings of the International Conference on Communication,
Computer, and Power, ICCCP98, Sultan Qaboos
University, Muscat, Sultanate of Oman, pp. 1923, December 1998.
4. S. Feiz and S. Hemati,
“Dispersion Evaluation by Monte Carlo Simulation,” in Proceedings of the
Fifth Iranian Physics Conference, Optics Session, Iran University of
Science and Technology, Tehran, Iran, pp. 1114, June 1998. Awarded the Gold
Medal by Iran Electronics Industry
3. S. Feiz, S. Hemati, and
M. Bahadoran,“Evaluation of Material Dispersion in
Optical Fibers According to Instantaneous Spectrum of the Light Source,” in Proceedings
of the sixth Iranian Conference on Electrical Engineering, ICEE98, K.N. Toosi University of Technology, Tehran, Iran, pp. 7984, May
1998.
2. S. Feiz, S. Hemati, and
M. Emadi, “Exact Determination of Material Dispersion
in SI Optical Fibers,” in Proceedings of the Fifth Iranian Conference on
Electrical Engineering, ICEE97, Sharif University of Technology, Tehran,
Iran, pp. 2431, May 1997.
1. S. Feiz and S. Hemati,
“Exact Determination of the Derivatives of the Refractive Index of the Optical
Fiber Core,” in Proceedings of the Fourth Iranian Conference on Electrical
Engineering, ICEE96, University of Tehran, Tehran, Iran, pp. 225228, May
1996.