Senior Researcher

Dr Smith is a Senior Researcher in the Networks Group at the Canberra Research Laboratory 

Location: 7 London Circuit, Canberra, ACT 2601

Postal Address: Locked Bag 8001, Canberra ACT 2601, Australia.

E-mail: David.Smith@nicta.com.au

Ph:+61 2 6267 6254 

Dr Smith was working on the Human Performance Improvement (HPI) Project

Previously Dr Smith was working on the Fundamental Limits of Wireless (FLoW) Project

He is also an adjunct  fellow with the Australian National University (ANU) 

Research Interests: 

Dr Smith's research interests are principally in the area of wireless communications including: MIMO systems; coherent and non-coherent space-time coding; technology and systems for body-area communications; wireless mesh and ad-hoc networks; game theory for wireless networks; radio propagation and electromagnetic modelling; co-operative communications; and antenna design, including the design of smart antennas. He also has some interest in optimization for smart grid.

(He also has industry experience in the design and development of a novel 3G base station antenna; as well as a variety of industry experience in telecommunications planning; radio frequency, optoelectronic and electronic communications design and integration) 

Qualifications: 

Dr Smith received the Bachelor of Engineering (Hons.) from the University of New South Wales (UNSW) in Electrical Engineering, and a Masters by Research (graduating 2001) and Ph.D. (graduating 2005) from the University of Technology Sydney (UTS) in Telecommunications Engineering.

Awards:

Dr Smith received a CO-OP scholarship from UNSW for undergraduate studies (joint UNSW/industrial program) , the award for the best student paper/presentation at the Australian Workshop on Applications of Radio Science 2002 (WARS'02)  and a best paper award (on which first author) at the First International Symposium on Applied Sciences on Biomedical and Communications Technologies, 2008 (ISABEL'08). NICTA Ph.D. student, Wayes Tushar, of whom he is primary supervisor, received a best student paper award at the Australian Communications Theory Workshop 2012 (AusCTW'2012); Dr Smith was the second author on this paper.

Publications since 2008 at NICTA can be accessed here from the publications webpage.

Open-Access Dataset

Complete open-access body area network (BAN) radio channel-gain datasets are now available from OpenNICTA (Many 100's of hours of measurement data). Complete description is found within the data-file zip. The following papers should be cited with respect to work that makes use of these datasets.

When using any of the Vector Signal Analyser data in this dataset, and the general wearable radio data please cite "First and Second-Order Statistical Characterizations of the Dynamic Body-Area Propagation Channel of Various Bandwidths"

When using the wearable radio data please cite "Open-source Testbed for Body Area Networks: 200 sample/sec, 12 hrs Continuous Measurement"

When using the "Relay" sub-folder wearable radio data please cite "Cooperative Body-Area-Communications: First and Second-Order Statistics with Decode-and-Forward" 

When using the "Whole Body" sub-folder wearable radio data please cite "Second Order Statistics for Many-link Body Area Networks"

When using the "Sleeping" (radio channel data for people sleeping) sub-folder please cite "Characterization of the Body-Area Propagation Channel for Monitoring a Subject Sleeping"

When using the "Multiperson-Interference" sub-folder please cite "Opportunistic Relaying in Wireless Body Area Networks: Coexistence Performance"

Selected Publications:

Smith, D.B., “Multiple branch switched antenna diversity in Rayleigh and Rician fading channels”, Proc.  IEEE VTS 54th Vehicular Technology Conference, 2001. VTC 2001 Fall,  Atlantic City, USA, Oct. 2001, pp. 1799-1803.

Smith, D.B., “An Application of a Generalised Jakes Model for MIMO Channels”, Proc. WARS’02, http://www.ips.gov.au/IPSHosted/NCRS/wars2002/proceedings/comm-c, NSW, Australia, Feb. 2002, pp. 1-6.

Smith, D.B. and Aubrey, T.A., “Generalized space-time modelling of the MIMO channel applied to analysing and optimising transmit antenna configurations,” in Proc. IEEE International Conference on Communications, 2003,  ICC'03. Alaska, May 2003, pp.  1978- 1982.

Smith, D.B., “Fast Differential Unitary Space-Time Modulation Decoding for a MIMO Radio Channel,” Wireless Personal Communications, vol. 25, no. 4, pp. 343-349, July 2003

Smith, D.B. and Aubrey, T.A., “Performance Degradation of Differential Space-Time Modulation in Fast Frequency Flat Fading Rayleigh MIMO channels,” Electronics Letters, vol. 39, no. 17, pp. 1278-1280, Aug. 2003

 Smith, D.B. and  Aubrey, T.A. , “Differential Unitary Space-Time Superset Modulation,” European Transactions on Telecommunications, Wiley, vol. 16, no. 4, pp. 303-307, July-Aug. 2005,

 Smith, D.B. and Abhayapala, T. D, “A Generalised Space-Time Model for Rayleigh Fading Channels with a Non-Isotropic Scatterer Distribution”, Electronics Letters, vol. 39, no. 21, pp. 1541-1543, Oct. 2003

Smith,  D. B.,  Abhayapala, T. D.and Aubrey, T.D. , “A Generalised (M, N_R) MIMO Rayleigh Channel Model for Non-Isotropic Scatterer Distributions”, Proceedings of the Workshop on Applications of Radio Science WARS’04, 2004,  Hobart, Australia, http://www.ips.gov.au/IPSHosted/NCRS/wars/wars2004/proceedings/final/c/smith_f.pdf.

Smith, D. B. and Abhayapala, T.D., “Generalised Space-Time Modelling of Rayleigh MIMO Channels”, in Proc. Australian Communications Theory Workshop, 2005, AusCTW'05, Brisbane, Australia, pp.135-140, Feb. 2005.

Smith, D and Abhayapala, T. D, ``Maximal Ratio Combining Performance Analysis in Rayleigh Fading Channels'', in IEE Proc. Communications, Oct 2006, Vol. 153, Issue 5, pp. 755-761.

Smith, D.B.; Hanlen, L.W., "Novel Unitary Space-Time Signal Design," Information Theory Workshop, 2006 IEEE , Punta del Este, Uruguay, pp. 327- 331, March 2006

Smith, D.B., "Improved Differential Unitary Space-Time Signal Design for Two to Six Transmit Antennas," Communications, 2006. ICC '06. IEEE International Conference on , Istanbul, Turkey, vol.3, no.pp.1271-1276, June 2006

Smith, D. B, “Improved Quasi-Orthogonal Space-Time Block Codes with Hexagonal Lattice Modulation,”  IEEE Signal Processing Advances in Wireless Communications Conference, SPAWC’07, Helsinki, Finland, June 2007

Zhang, M., Jayalath, A.D.S., Abhayapala, T.D., Smith, D., Athaudage, C., "Compensation Decoding of Space Time Frequency Block Codes," IEEE Communications Letters, vol.11, no.7, pp.610-612, July 2007.

Smith, D. B., "High-rate orthogonal space-time block code for four transmit antennas," Electronics Letters , vol.43, no.17, pp.937-938, Aug. 2007

Smith, D. B., “Super-orthogonal co-ordinate interleaved orthogonal designs”, IEEE International Conference on Communications 2008, ICC 2008,  Beijing, China, May 2008.

Zhang, M., Jayalath, A.D.S., Abhayapala, T.D., Smith, D., Athaudage, C., "Multirate Space-Time-Frequency Linear Block Coding," IEEE International Conference on Communications 2008, ICC 2008,  Beijing, China, May 2008.

Smith, D.B.; Hanlen, L.W., "New group product differential unitary space-time codes with simplified design and detection," Wireless Communications, IEEE Transactions on , vol.7, no.12, pp.4825-4830, December 2008

Smith, D.; Hanlen, L.; Miniutti, D.; Jian Zhang; Rodda, D.; Gilbert, B., "Statistical characterization of the dynamic narrowband body area channel," Applied Sciences on Biomedical and Communication Technologies, 2008. ISABEL '08. First International Symposium on , vol., no., pp.1-5, 25-28 Oct. 2008

Smith, D. B and Hanlen, L. W., “Differential Unitary Space-Time Signal Designs with Improved Performance using Parametric Equivalence,”  European Transactions on Telecommunications, Feb 2009

L. Hanlen, D. Smith, D. Lewis, and A. Zhang, “Key-sharing via channel randomness in body area networks: Is everyday movement sufficient? ” in Bodynets, Los Angeles/USA, April 2009.

J. Zhang, D. Smith, L. Hanlen, D. Miniutti, D. Rodda, and B. Gilbert, “Stability of narrowband dynamic body area channel,” IEEE Antennas and Wireless Propagation Letters, April 2009. 

M. Zhang, T. Abhayapala, D. Jayalath, D. Smith, and C. Athaudage, “Matched rotation precoding: a new paradigm in space-frequency coding,” in IEEE International Conference on Communications (ICC), Dresden/Germany, June 2009.

D. Smith, A. Zhang, L. Hanlen, D. Miniutti, D. Rodda, and B. Gilbert, “A simulator for the dynamic on-body area propagation channel,” in 2009 IEEE International Symposium on Antennas and Propagation, IEEE, Ed., Charleston, SC, USA, June 2009. 

D. Smith, L. Hanlen, J. Zhang, D. Miniutti, D. Rodda, and B. Gilbert, “Characterization of the dynamic narrowband on-body to off-body area channel,” inIEEE International Conference on Communications 2009, ICC’09, Dresden, Germany, June 2009. 

D. Smith, A. Zhang, L. Hanlen, D. Miniutti, D. Rodda, and B. Gilbert, “Temporal correlation of the dynamic on-body area radio channel,” IET Electronics Letter, vol. 45, no. 24, pp. 1212–1213, November 2009. 

D. Smith,J. Zhang, L. Hanlen, D. Miniutti, D. Rodda, and B. Gilbert, “Temporal correlation of the dynamic on-body area radio channel,” IET Electronics Letter, vol. 45, no. 24, pp. 1212–1213, November 2009.

J. Zhang, D. Smith, D. Miniutti, L. Hanlen, D. Rodda and B. Gilbert, “Performance of Piconet Co-existence Schemes in Wireless Body Area Networks” in IEEE WCNC 2010, Sydney, April 2010

D. Smith, D. Miniutti, L. Hanlen, D. Rodda and B. Gilbert, “Dynamic Narrowband Body Area Communications: Link-Margin Based Performance Analysis and Second-Order Temporal Statistics” in IEEE WCNC 2010, Sydney, April 2010.

M. T. Hossain and D. Smith, “Data and channel aided symbol timing estimation for cooperative communications,” in 11th Australian Communication Theory Workshop (AusCTW’10). Canberra, Australia February 2010

V. Chaganti, D.Smith and L. Hanlen, “Second-order statistics for Many-Link Body Area Networks”,IEEE Antennas and Wireless Propagation Letters, vol. 9, pp. 322-325, 2010.

M. T. Hossain and D. Smith, “Cooperative Communications: Synchronization in Fast Flat-Fading Channels with Various Signal Constellations” IEEE SPAWC 2010, Marrakech, Morocco, June 2010 

Tushar, W.; Smith, D.B.; , "Distributed transmit beamforming based on a 3-bit feedback system," Signal Processing Advances in Wireless Communications (SPAWC), 2010 IEEE Eleventh International Workshop on , vol., no., pp.1-5, 20-23 June 2010  

M. T. Hossain, D. Smith, R. Kennedy and K. Sithamparanathan, “Effect of Timing Error on the Performance of BPSK Modulation over a Fading Channel” IEEE Communications Letters, vol. 14, no. 10, pp. 894-896, Oct. 2010 

L. Hanlen, D. Miniutti, D. Smith D. Rodda, and B. Gilbert, “Co-Channel Interference in Body Area Networks with Indoor Measurements at 2.4GHz: Distance-to-interferer is a poor estimate of received interference power,” Springer International Journal of Wireless Information Network, vol. 17, nos. 3-4, Aug. 2010, pp. 113-125. 

D. B. Smith, D. Miniutti, and L. W. Hanlen, “Characterization of the body-area propagation channel for monitoring a subject sleeping,” IEEE Transactions on Antennas and Propagation, vol. 59, no. 11, pp. 4388 –4392, Nov. 2011. 

Tushar, W.; Smith, D.; Lamahewa, T.; , "Distributed transmit beamforming: Data funneling in wireless sensor networks," Communications Theory Workshop (AusCTW), 2012 Australian , pp.49-54, Feb.  2012

Tushar, W.; Smith, D.;  Zhang, J.; Lamahewa, T. A.; Abhayapala, T.; “Distributed Transmit Beamforming:  Phase Convergence Improvement Using Enhanced One-Bit Feedback”, IEEE WCNC’2012, April 2012.