Gottfried Lechner

Prof Gottfried Lechner

Professor

School of Electrical and Mechanical Engineering

College of Engineering and Information Technology

Gottfried Lechner is Professor at UniSA STEM. His research is on wireless communications with a focus on satellite communications and free space optical communications.
Prof Lechner completed his Dipl.-Ing. and Dr.techn. degrees from Vienna University of Technology, Austria, in 2003 and 2007, respectively. He worked as a software developer from 1999 to 2002 before joining the Telecommunications Research Centre Vienna in 2002 as a Researcher in the area of Signal and Information Processing. In this role he collaborated extensively with numerous European research organisations and industry partners.
In 2008, he joined the University of South Australia as a Research Fellow in the area of broadband wireless communications. From 2015 to 2019, he was the Centre Director of the Insitute for Telecommunications Research and from 2019 to 2021, he served as a Research Program Leader "Advanced Communications" in the SmartSat Cooperative Research Centre.
Prof Lechner has published more than 90 research journal articles, conference papers and technical reports. He is a regular reviewer for a number of top academic journals in the area of telecommunications, a reviewer for the Australian Research Council and a technical program committee member for a number of international conferences.

Year Citation
2025 Nguyen, K. D., Lechner, G., & Ahmad, I. (2025). Zero-feedback open-loop distributed transmit beamforming. Digital Signal Processing: A Review Journal, 156(104875), 1-9.
DOI
2024 Searle, S., Lechner, G., & Dogancay, K. (2024). Clutter cancellation in passive bistatic radar with transmitter nonlinearity. IEEE Transactions On Radar Systems, 2, 979-990.
DOI WoS1
2023 Waqas, A., Nguyen, K., Lechner, G., & Chan, T. (2023). Joint parameter estimation and decoding in a distributed receiver. International Journal of Satellite Communications and Networking, 41(1), 59-81.
DOI Scopus1
2023 Mehboob, A., Layton, K. J., Lechner, G., & Cowley, W. G. (2023). Wiener predistorter for nonlinear satellite downlinks. International Journal Of Satellite Communications And Networking, 41(4), 392-405.
DOI
2022 Ahmad, I., Sung, C. K., Kramarev, D., Lechner, G., Suzuki, H., & Grivell, I. (2022). Outage probability and ergodic capacity of distributed transmit beamforming with imperfect CSI. IEEE Transactions on Vehicular Technology, 71(3), 3008-3019.
DOI
2022 Waqas, A., Lechner, G., Chan, T., & Nguyen, K. (2022). Enhanced data-aided frequency estimation by collaboration in a distributed receiver. IET Communications, 16(7), 760-771.
DOI Scopus1 WoS1
2021 Ahmad, I., Nguyen, K. D., Letzepis, N., & Lechner, G. (2021). On the next-generation high throughput satellite systems with optical feeder links. IEEE Systems Journal, 15(2, article no. 9152013), 2000-2011.
DOI
2021 Ahmad, I., Nguyen, K., Letzepis, N., Lechner, G., & Joroughi, V. (2021). Zero-forcing precoding with partial CSI in multibeam high throughput satellite systems. IEEE Transactions on Vehicular Technology, 70(2, article no. 9328170), 1410-1420.
DOI
2019 Akhlaq, A., Ansari, I. S., Lechner, G., Rice, M., & Ahmad, I. (2019). Statistical characterisation and analysis of differential correlation-based frame detector. IET Communications, 13(17), 2678-2687.
DOI
2018 Noor A Rahim, M., Nguyen, K. D., Lechner, G., & Guan, Y. L. (2018). Design and analysis of anytime codes for relay channels. IEEE transactions on communications, 66(4), 1349-1362.
DOI
2018 Layton, K. J., Mehboob, A., Cowley, W. G., & Lechner, G. (2018). Improved demapping for channels with data-dependent noise. EURASIP journal on wireless communications and networking, 2018(1), 1-12.
DOI
2018 Noor A Rahim, M., Khyam, M. O., Guan, Y. L., Ali, G. G., Nguyen, K. D., & Lechner, G. (2018). Delay-universal channel coding with feedback. IEEE Access, 6, 37918-37931.
DOI
2017 Layton, K. J., Mehboob, A., Akhlaq, A., Bagaglini, F., Cowley, W. G., & Lechner, G. (2017). Predistortion for wideband nonlinear satellite downlinks. IEEE communications letters, 21(9), 1985-1988.
DOI
2017 Noor A Rahim, M., Nguyen, K. D., & Lechner, G. (2017). SC-LDPC code design for half-duplex relay channels. Wireless personal communications, 92(2), 771-783.
DOI
2016 Noor A Rahim, M., Nguyen, K. D., & Lechner, G. (2016). Delay-universal codes for multiple access channels. Transactions on emerging telecommunications technologies, 27(4), 612-619.
DOI
2016 Noor A Rahim, M., Nguyen, K. D., & Lechner, G. (2016). SC-LDPC code design for Gaussian multiple access channel. IET communications, 10(17), 2402-2406.
DOI
2016 Jayasooriya, S., Shirvanimoghaddam, M., Ong, L., Lechner, G., & Johnson, S. J. (2016). A new density evolution approximation for LDPC and multi-edge type LDPC codes. IEEE transactions on communications, 64(10), 4044-4056.
DOI WoS21
2015 Lechner, G., Land, I., & Grant, A. (2015). Linear and non-linear run length limited codes. IEEE Communications Letters, 19(7, article no. 7091903), 1085-1088.
DOI
2015 Noor A Rahim, M., Nguyen, K. D., & Lechner, G. (2015). Anytime reliability of spatially coupled codes. IEEE transactions on communications, 63(4), 1069-1080.
DOI
2014 Chandrasetty, V. A., Johnson, S. J., & Lechner, G. (2014). Memory-efficient quasi-cyclic spatially coupled low-density parity-check and repeat-accumulate codes. IET Communications, 8(17), 3179-3188.
DOI WoS14
2013 Johnson, S., & Lechner, G. (2013). Spatially coupled repeat-accumulate codes. IEEE communications letters, 17(2), 373-376.
DOI
2013 Lechner, G., & Pacher, C. (2013). Estimating channel parameters from the syndrome of a linear code. IEEE communications letters, 17(11), 2148-2151.
DOI
2013 Timo, R., Lechner, G., Ong, L., & Johnson, S. (2013). Multi-way relay networks: orthogonal uplink, source-channel separation and code design. IEEE transactions on communications, 61(2), 753-768.
DOI
2013 Ong, L., Lechner, G., Johnson, S. J., & Kellett, C. M. (2013). The three-user finite-field multi-way relay channel with correlated sources. IEEE transactions on communications, 61(8), 3125-3135.
DOI WoS7
2012 Weidmann, C., & Lechner, G. (2012). A fresh look at coding for q-ary symmetric channels. IEEE transactions on information theory, 58(11, article no. 6253262), 6959-6967.
DOI
2012 Lechner, G., Pedersen, T., & Kramer, G. (2012). Analysis and design of binary message passing decoders. IEEE transactions on communications, 60(3), 601-607.
DOI
2011 Lechner, G., Nguyen, K. D., Guillen i Fabregas, A., & Rasmussen, L. K. (2011). Optimal power control for LDPC codes in block-fading channels. IEEE transactions on communications, 59(7), 1759-1765.
DOI
2011 Azmi, M. H., Yuan, J., Lechner, G., & Rasmussen, L. K. (2011). Design of multi-edge-type bilayer-expurgated LDPC codes for decode-and-forward in relay channels. IEEE transactions on communications, 59(11), 2993-3006.
DOI

Year Citation
2023 Kadel, R., & Lechner, G. (2023). Full diversity low-density parity-check (LDPC) codes for block-fading channel. In 2023 International Conference on Electronics, Information, and Communication (ICEIC) Vol. 12 (pp. 1-5). US: IEEE.
DOI
2022 Mudge, K., Clare, B., Jager, E., Devrelis, V., Bennet, F., Copeland, M., . . . Grant, K. (2022). DSTG Laser Satellite Communications -Current Activities and Future Outlook. In 2022 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2022 (pp. 17-21). Online: IEEE.
DOI Scopus3 WoS2
2021 Waqas, A., Lechner, G., Nguyen, K., & Chan, T. (2021). Particle filter for joint carrier phase, doppler shift and doppler rate estimation and data detection. In R. Velazque (Ed.), Proceedings - 2021 IEEE Latin-American Conference on Communications, LATINCOM 2021 (pp. 1-6). US: IEEE.
DOI Scopus3
2019 Sung, C. K., Ahmad, I., Lechner, G., & Suzuiki, H. (2019). Performance analysis of distributed transmit beamforming with quantized channel feedback. In IEEE Vehicular Technology Conference (pp. 1-5). US: IEEE.
DOI
2019 Ahmad, I., Lechner, G., & Shakeel, I. (2019). On the error rate analysis of distributed transmit beamforming. In International Telecommunication Networks and Applications Conference (pp. 1-4). US: IEEE.
DOI
2019 Layton, K. J., Mehboob, A., Cowley, W., & Lechner, G. (2019). Validating Predistortion Methods using a Flexible Hardware Testbed. In IEEE International conference on communications (pp. 1-5). US: IEEE.
DOI
2019 Kramarev, D., Ahmad, I., Layton, K., Lavenant, M., Soetiyono, H., Lechner, G., . . . Leak, S. (2019). Event-triggered synchronization for mobile distributed transmit beamforming. In Proceedings - IEEE Military Communications Conference MILCOM Vol. 2019-November (pp. 343-348). US: IEEE.
DOI
2018 Leak, S., Grivell, I., Suzuki, H., Sung, C. K., Hedley, M., Lechner, G., . . . Kramarev, D. (2018). Distributed transmit beamforming expanding the capacity and range of tactical communications. In 2018 Military Communications and Information Systems Conference, MilCIS 2018 - Proceedings (pp. 1-6). US: IEEE.
DOI
2017 Layton, K. J., Mehboob, A., Cowley, W., & Lechner, G. (2017). Compensation for transmitter distortions in high-speed satellite downlinks. In Proceedings of the International Astronautical Congress, IAC Vol. 8 (pp. 1-4). Australia: International Astronautical Federation.
2017 Mehboob, A., Layton, K., Cowley, W., & Lechner, G. (2017). Constellation optimization for nonlinear satellite channels. In Proceedings of the 68th international astronautical congress, IAC2017 (pp. 4757-4763). France: International Astronautical Federation.
2017 Akhlaq, A., Rice, M., & Lechner, G. (2017). Satellite-based search and rescue system in the presence of multiple beacons. In Proceedings of the International Astronautical Congress, IAC 2017 (pp. 4884-4890). France: International Astronautical Federation.
2016 Noor A Rahim, M., Lechner, G., & Nguyen, K. D. (2016). Density evolution analysis of spatially coupled LDPC codes over BIAWGN channel. In Proceedings of the Australian Communications Theory Workshop (pp. 13-17). US: IEEE.
DOI
2016 Mudge, K. A. E., Grant, K. J., Clare, B. A., Biggs, C. L., Cowley, W. G., Manning, S., & Lechner, G. (2016). Development and characterisation of FPGA modems using forward error correction for FSOC. In L. M. Thomas, & E. J. Spillar (Eds.), Proceedings of SPIE Vol. 9833 (pp. 1-9). US: SPIE.
DOI
2016 De Silva, G. S. H., Cowley, W. G., & Lechner, G. (2016). Using channel state information for low-latency applications in free-space optical communication. In Proceedings of the Australian Communications Theory Workshop (pp. 7-12). US: IEEE.
DOI
2015 Iscan, O., Land, I., & Lechner, G. (2015). Repeat-accumulate codes for broadcast channels with side information. In International ITG Conference on Systems, Communications and Coding (pp. 1-5). US: IEEE.
2015 Rice, M., Lechner, G., Zhang, J., & Zhang, J. (2015). Results from australian trials of UHF distress beacons over MEO satellites. In 33rd AIAA International Communications Satellite Systems Conference and Exhibition Icssc 2015.
2015 Noor A Rahim, M., Nguyen, K. D., & Lechner, G. (2015). Anytime reliable bilayer codes with uncoded relaying. In Proceedings of the IEEE International Conference on Communications (pp. 4054-4059). US: IEEE.
DOI
2014 Haley, D. V. L., Grant, A. J., Kasparian, J., Cowley, W. G., Davis, L. M., Land, I. R., . . . Pollok, A. (2014). Global sensor network: concept to demonstration in under 2 years. In 65th International Astronautical Congress (pp. 1-2). US: American Institute of Aeronautics and Astronautics.
2014 Haley, D. V. L., Grant, A. J., Lechner, G., Cowley, W. G., Davis, L. M., Land, I. R., . . . Pollok, A. (2014). Enabling technologies for a microsatellite-based global sensor network. In The 4S Symposium-Small Satellites Systems and Services Symposium (pp. 1-13). Netherlands: ESA-ESTEC.
2014 Noor A Rahim, M., Nguyen, D. K., & Lechner, G. (2014). Delay-exponent of bilayer anytime code. In Proceedings of the 2014 IEEE Information theory workshop (ITW) (pp. 451-455). United States: IEEE Press.
DOI
2014 Noor A Rahim, M., Nguyen, K. D., & Lechner, G. (2014). Finite Length Analysis of LDPC Codes. In 2014 IEEE Wireless Communications and Networking Conference (pp. 206-211). US: IEEE.
DOI
2014 Haley, D., Davis, L. M., Pollok, A., Chen, Y., Lechner, G., Lavenant, M., . . . Soetiyono, H. (2014). Software defined radio based global sensor network architecture. In SDR-WInnComm 2014 Papers and Presentations (pp. 1-9). US: Wireless Innovation Forum.
2014 Morshed, K. M., Land, I., & Lechner, G. (2014). Lossless compression of uniform binary sources with coded side-information. In 2014 Australian Communications Theory Workshop, AusCTW 2014 (pp. 102-107). US: IEEE.
DOI
2014 Noor, A. R. M., Nguyen, D. K., & Lechner, G. (2014). Anytime spatially coupled codes for relay channel. In 2014 Australian Communications Theory Workshop, AusCTW 2014 (pp. 39-44). Australia: IEEE Press.
DOI
2013 Noor A Rahim, M., Nguyen, K. D., & Lechner, G. (2013). Anytime characteristics of spatially coupled code. In 51st Annual Allerton Conference on Communication, Control, and Computing (pp. 335-341). US: IEEE.
DOI
2013 Kadel, R., & Lechner, G. (2013). Repeat-accumulate codes for block-fading channels. In 2013 Australian Communications Theory Workshop (AusCTW) (pp. 37-42). US: IEEE.
DOI
2012 Lechner, G., & Johnson, S. J. (2012). Absorbing sets and cycles. In 2012 7th International Symposium on Turbo Codes and Iterative Information Processing (ISTC) (pp. 185-189). US: IEEE.
DOI
2012 Kadel, R., & Lechner, G. (2012). Full diversity binary message-passing decoders for block fading channels. In 2012 Australian Communications Theory Workshop (AusCTW) (pp. 66-71). US: IEEE.
DOI
2012 Schmalen, L., ten, B. S., Lechner, G., & Leven, A. (2012). On threshold prediction of low-density parity-check codes with structure. In 2012 46th Annual Conference on Information Sciences and Systems (CISS) (pp. 1-5). US: IEEE.
DOI
2011 Dehipitiya, D., Lechner, G., & Timo, R. (2011). Source coding with asymmetric side-information: an exposition of the dual-channel. In B. Krongold (Ed.), AusCTW2011: communications theory workshop (pp. 148-153). US: IEEE.
DOI
2011 Cowley, W. G., Lechner, G., Biggs, C., & Grant, K. (2011). Transceiver design for reliable free space optical communications. In B. Krongold (Ed.), AusCTW2011 : communications theory workshop (pp. 94-99). US: IEEE.
DOI
2011 Lechner, G., Timo, R. C., & Ong, L. (2011). Sparse graph codes for the two-way relay network with correlated sources. In Data compression conference (DCC), 2011 (pp. 466). US: IEEE.
DOI
2011 Timo, R., Ong, L., & Lechner, G. (2011). The two-way relay network with arbitrarily correlated sources and an orthogonal MAC. In J. A. Storer, & M. W. Marcellin (Eds.), Data compression conference (DCC), 2011 proceedings (pp. 253-262). US: IEEE.
DOI
2011 Ong, L., Timo, R., Lechner, G., Johnson, S. J., & Kellett, C. M. (2011). The finite field multi-way relay channel with correlated sources: the three-user case. In D. Yu, & A. Yener (Eds.), Proceedings of the IEEE international symposium on information theory (pp. 2238-2242). US: IEEE.
DOI
2010 Lechner, G., & Land, I. (2010). Degree-dependent decoding of LDPC codes. In Communications Theory Workshop (AusCTW), 2010 Australian (pp. 107-110). US: IEEE.
DOI
2010 Kambhampati, S. K., Lechner, G., Chan, T., & Rasmussen, L. K. (2010). Check splitting of root-check LDPC codes over ARQ block-fading channels. In Proceedings of the 2010 Australian Communications Theory Workshop (pp. 123-127). US: IEEE.
DOI Scopus9 WoS3
2010 Lechner, G. (2010). The effect of cycles on binary message-passing decoding of LDPC codes. In Proceedings of the 2010 Australian Communications Theory Workshop (pp. 43-47). US: IEEE.
DOI
2009 Caban, S., Mehlfuhrer, C., Lechner, G., & Rupp, M. (2009). Testbedding MIMO HSDPA and WiMAX. In Proceedings of the 2009 IEEE 70th vehicular technology conference fall : VTC 2009 fall (pp. 1-5). US: IEEE.
DOI
2009 Land, I., Lechner, G., & Rasmussen, L. (2009). Adaptive decoding of LDPC codes with binary messages. In Proceedings of the 2009 International Symposium on Information Theory (pp. 2146-2150). USA: IEEE.
2008 Novak, C., Lechner, G., & Matz, G. (2008). MIMO-BICM with imperfect channel state information: EXIT chart analysis and LDPC code optimization. In 42nd Asilomar Conference on Signals Systems and Computers (pp. 443-447). US: IEEE.
DOI
2008 Lechner, G., & Weidmann, C. (2008). Optimization of binary LDPC codes for the q-ary symmetric channel with moderate q. In Proceedings 5th International Symposium on Turbo Codes and Related Topics. Lausanne, Switzerland.
2007 Lechner, G., & Burg, A. (2007). Design of spatially multiplexed LDPC codes for multi-user detection. In Proceedings 15th European Signal Processing Conference EUSIPCO 2007. Poznan, Poland.
2006 Lechner, G., & Sayir, J. (2006). Improved Sum-Min Decoding for Irregular LDPC Codes. In K. Watanabe (Ed.), 4th International Symposium on Turbo Codes & Related Topics. Germany.
2006 Lechner, G., & Sayir, J. (2006). Optimization of LDPC codes for receiver frontends. In J. O'Sullivan, & A. Anderson (Eds.), Proceedings ISIT 2006, International Symposium on Information Theory. USA: IEEE Xplore.
2004 Lechner, G., Bolzer, A., Sayir, J., & Rupp, M. (2004). Implementation of an LDPC decoder on a vector signal processor. In L. Rusch (Ed.), Proceedings Asilomar Conference on Signals, Systems, and Computers. USA.
2004 Lechner, G., & Sayir, J. (2004). Improved sum-min decoding of LDPC codes. In P. B.Huber (Ed.), ISITA 2004, International Symposium on Information Theory and its Applications. Italy: ISITIA.
2004 Lechner, G., Sayir, J., & Rupp, M. (2004). Efficient DSP implementation of an LDPC decoder. In Proceedings IEEE international conference on acoustics, speech and signal processing Vol. 4 (pp. 665-668). United States: IEEE.
DOI
2003 Lechner, G., Wohlgenannt, R., & Sayir, J. (2003). Analyzing the effect of redundant parity-checks using EXIT charts. In M. Kang (Ed.), Proceedings 3rd International Symposium on Turbo Codes and Related Topics. Brest, France.

Year Citation
2016 Grant, A. J., Lechner, G., Pollok, A., McKilliam, R. G., Land, I. R., Haley, D. V. L., . . . Lavenant, M. P. D. (2016). WO2015024056, A multiuser communications system.
2015 Grant, A. J., Lechner, G., Pollok, A., McKilliam, R. G., Land, I. R., Haley, D. V. L., & Lavenant, M. P. D. (2015). WO2015024062, Enhanced automatic identification system.
2014 Land, I. R., Lechner, G., Grant, A. J., & Haley, D. V. L. (2014). WO2014094064, Digital communication system.
2014 Cowley, W. G., Lechner, G., & Biggs, C. (2014). WO2014186826, Synchronisation methods for free space optical communications.
2014 Haley, D. V. L., Buetefuer, J. L., Grant, A. J., Cowley, W. G., Lechner, G., Land, I. R., . . . Barbulescu, A. (2014). WO2014043760, Communication system and method.

  • iLaunch: CHORSS: Compact Hybrid Optical RF Space Segment (SC-12), iLaunch Trailblazer, 01/05/2025 - 01/05/2028

  • Enabling Research for Future Satcom, Cwth Dept of Defence, 18/10/2025 - 28/08/2026

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  • SmartSat 1.16s: Distributed Beamforming for Satellite Applications Top-UpAhsan Waqas, SmartSat CRC, 11/11/2020 - 10/11/2023

  • SmartSat1-26: Emergency Communications for LunaSAR, SmartSat CRC, 10/06/2022 - 09/12/2022

  • SmartSat: 1.19 Compact Hybrid Optical-RF user Segment (CHORUS) Phase 2, SmartSat CRC, 01/02/2021 - 30/06/2022

  • Software-Defined Receiver Research for Sensor and Communications Links Design, DEWC Systems Pty Ltd, 14/02/2019 - 29/06/2019

  • New strategies to transmit data: Coping with exponential growth in demand, ARC - Discovery Projects, 01/01/2015 - 31/12/2018

  • New technologies for second generation search and rescue, ARC - Linkage Project, 01/05/2016 - 31/10/2018

  • Downlinks for future earth observation satellites: breaking the bottlenecks, ARC - Linkage Project, 20/10/2014 - 31/07/2018

  • New technologies for second generation search and rescue (Industry Partner), EMS Technologies Canada Limited, 30/06/2016 - 30/06/2018

  • ARC linkage partner Thales 2014-2016, Thales Alenia Space Italia, 16/10/2014 - 30/04/2018

  • FPGA-based FSO FEC System, Cwth Dept of Defence - Defence Support Group, 14/12/2016 - 20/05/2017

  • Novel Waveform Development - Cooperative Arrays, Cwth Dept of Defence - Defence Support Group, 14/12/2016 - 19/05/2017

  • Passive Radar Signal Processing, Cwth Dept of Defence - Defence Support Group, 14/12/2016 - 18/05/2017

  • VDES Channel Sounder Software, The Corporation of Trinity House, 16/01/2017 - 31/03/2017

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