Project: Advances in Resilient Tactical Communications
In collaboration with the Defence Science and Technology Group (DSTG) and the University of South Australia, the Cybernetics Group at CSIRO’s Data61 has been developing technologies that extend the range of military terrestrial wireless communication link by many-folds without increasing the use of transmitting power or frequency resources.
This is achieved by accurately synchronising multiple lower transmitting power devices and let them co-operate to construct a virtual antenna array to form a radio beam towards the direction of the receiver. The technology has been known in the literature as “distributed transmit beamforming” (related publications listed below).
Despite many research institutions have been aiming to realise such a transmission, none have been able to demonstrate it for fast-moving vehicles.
We have overcome the obstacles with a number of innovations and have demonstrated six array nodes achieving 15 dB gain at 77 km/h this year. The final demonstration is planned in December 2019 to extend the communication range from a conventional 5 km mark to a new 20 km mark.
The project is funded by the DST Group Next Generation Technologies Fund.
Y. Luo, J. A. Zhang, X. Huang, W. Ni and J. Pan, “Optimization and Quantization of Multibeam Beamforming Vector for Joint Communication and Radio Sensing,” in IEEE Transactions on Communications, vol. 67, no. 9, pp. 6468-6482, Sept. 2019. doi: 10.1109/TCOMM.2019.2923627
M. Sharma, D. Jayalath, H. Suzuki and C. K. Sung, “Experimental Validation of the Performance of Channel Prediction Algorithms in MU-MIMO-OFDM Downlink System,” 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), Kuala Lumpur, Malaysia, 2019, pp. 1-5. doi: 10.1109/VTCSpring.2019.8746426
C. K. Sung, I. Ahmad, G. Lechner and H. Suzuki, “Performance Analysis of Distributed Transmit Beamforming with Quantized Channel Feedback,” 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), Kuala Lumpur, Malaysia, 2019, pp. 1-5. doi: 10.1109/VTCSpring.2019.8746444
I. Shakeel, I. Ahmad and H. Suzuki, “Construction of Adaptive Short LDPC Codes for Distributed Transmit Beamforming,” 2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS), Cairns, Australia, 2018, pp. 1-7. doi: 10.1109/ICSPCS.2018.8631749
Stephen Leak, Ian Grivell, Hajime Suzuki, Chang Kyung Sung, Mark Hedley, Gottfried Lechner, Marc Lavenant, Hidayat Soetiyono, Dmitry Kramarev, “Distributed Transmit Beamforming Expanding the Capacity and Range of Tactical Communications,” 2018 Military Communications and Information Systems Conference (MilCIS), Canberra, ACT, 2018, pp. 1-6. doi: 10.1109/MilCIS.2018.8574113
M. Sharma, D. Jayalath, H. Suzuki and C. K. Sung, “Performance analysis of multi-user MIMO downlink system in time-varying channels,” 2017 17th International Symposium on Communications and Information Technologies (ISCIT), Cairns, QLD, 2017, pp. 1-6. doi: 10.1109/ISCIT.2017.8261225
H. Suzuki and J. Pathikulangara, “Implementation of Coordinated MIMO-OFDM with Independent Local Oscillators,” 2017 IEEE 85th Vehicular Technology Conference (VTC Spring), Sydney, NSW, 2017, pp. 1-5. doi: 10.1109/VTCSpring.2017.8108236
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