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Dr.-Ing. (PhD) Alexander Fengler

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Matlab Code

Positions

Postdoctoral Researcher Fellow at DLR Oberpfaffenhofen
2024 - current
Postdoctoral Researcher Fellow at LIDS, MIT
Funded by a Walter-Benjamin Fellowship by the German Research Foundation (DFG)
2022 - 2024
Postdoctoral Researcher at the Chair for Communication and Information Theory at TU Berlin
Mar. 2021- Dec. 2021
PhD Student at the Chair for Communication and Information Theory at TU Berlin
2016-2021

Research Interests

  • Approximate Message Passing
  • Unsoured Random Access
  • Sparse Regression Codes
  • Compressed Sensing/Sparse Recovery
  • Information Theory
  • Channel Coding
  • Wireless Communication

Publications

Journal
[1]
A. Fengler, S. Haghighatshoar, P. Jung, and G. Caire, “Non-Bayesian Activity Detection, Large-Scale Fading Coefficient Estimation, and Unsourced Random Access With a Massive MIMO Receiver,” IEEE Transactions on Information Theory, vol. 67, no. 5, pp. 2925–2951, May 2021, doi: 10.1109/TIT.2021.3065291.
[2]
A. Fengler, P. Jung, and G. Caire, “SPARCs for Unsourced Random Access,” IEEE Transactions on Information Theory, vol. 67, no. 10, pp. 6894–6915, Oct. 2021, doi: 10.1109/TIT.2021.3081189.
[3]
A. Fengler, O. Musa, P. Jung, and G. Caire, “Pilot-Based Unsourced Random Access with a Massive MIMO Receiver, Interference Cancellation, and Power Control,” IEEE Journal on Selected Areas in Communications, pp. 1–1, 2022, doi: 10.1109/JSAC.2022.3144748.
Conference
[1]
A. Fengler, P. Jung, and G. Caire, “Unsourced Multiuser Sparse Regression Codes achieve the Symmetric MAC Capacity,” in 2020 IEEE International Symposium on Information Theory (ISIT), Jun. 2020, pp. 3001–3006. doi: 10.1109/ISIT44484.2020.9174035.
[2]
A. Fengler, S. Haghighatshoar, P. Jung, and G. Caire, “Grant-Free Massive Random Access With a Massive MIMO Receiver,” in 2019 53rd Asilomar Conference on Signals, Systems, and Computers, Nov. 2019, pp. 23–30. doi: 10.1109/IEEECONF44664.2019.9049039.
[3]
A. Fengler, P. Jung, and G. Caire, “SPARCs and AMP for Unsourced Random Access,” in 2019 IEEE International Symposium on Information Theory (ISIT), Jul. 2019, pp. 2843–2847. doi: 10.1109/ISIT.2019.8849802.
[4]
A. Fengler, P. Jung, and G. Caire, “Pilot-Based Unsourced Random Access with a Massive MIMO Receiver in the Quasi-Static Fading Regime,” arXiv:2012.03277 [cs, math], Aug. 2021, Accessed: Aug. 13, 2021. [Online]. Available: http://arxiv.org/abs/2012.03277
[5]
A. Lancho, A. Fengler, and Y. Polyanskiy, “Finite-Blocklength Results for the A-channel: Applications to Unsourced Random Access and Group Testing,” presented at the 2022 58th Annual Allerton Conference on Communication, Control, and Computing (Allerton), Oct. 2022. Accessed: Oct. 24, 2022. [Online]. Available: http://arxiv.org/abs/2210.01951
[6]
A. Fengler, A. Lancho, K. Narayanan, and Y. Polyanskiy, “On the Advantages of Asynchrony in the Unsourced MAC,” in 2023 IEEE International Symposium on Information Theory (ISIT), Jun. 2023, pp. 2523–2528. doi: 10.1109/ISIT54713.2023.10206586.
[7]
A. Fengler, G. Liva, and Y. Polyanskiy, “Sparse Graph Codes for the 2-User Unsourced MAC,” in 2022 56th Asilomar Conference on Signals, Systems, and Computers, Oct. 2022, pp. 682–686. doi: 10.1109/IEEECONF56349.2022.10051894.
[8]
A. Fengler, A. Lancho, and Y. Polyanskiy, “Coded Orthogonal Modulation for the Multi-Antenna MAC,” in 2023 12th International Symposium on Topics in Coding (ISTC), Brest, France: IEEE, Sep. 2023, pp. 1–5. doi: 10.1109/ISTC57237.2023.10273538.
Preprints
[1]
A. Fengler, G. Caire, P. Jung, and S. Haghighatshoar, “Massive MIMO Unsourced Random Access,” arXiv:1901.00828, Jan. 2019, Accessed: Jan. 07, 2019. [Online]. Available: http://arxiv.org/abs/1901.00828
[2]
A. Fengler, S. Haghighatshoar, P. Jung, and G. Caire, “Non-Bayesian Activity Detection, Large-Scale Fading Coefficient Estimation, and Unsourced Random Access with a Massive MIMO Receiver,” arXiv:1910.11266 [cs, math], Aug. 2020, Accessed: Nov. 17, 2020. [Online]. Available: http://arxiv.org/abs/1910.11266
[3]
A. Fengler and P. Jung, “On the Restricted Isometry Property of Centered Self Khatri-Rao Products,” arXiv:1905.09245, May 2019, Accessed: Jun. 04, 2019. [Online]. Available: http://arxiv.org/abs/1905.09245
[4]
A. Fengler, P. Jung, and G. Caire, “Pilot-Based Unsourced Random Access with a Massive MIMO Receiver in the Quasi-Static Fading Regime,” arXiv:2012.03277 [cs, math], Aug. 2021, Accessed: Aug. 13, 2021. [Online]. Available: http://arxiv.org/abs/2012.03277
[5]
A. Fengler, P. Jung, and G. Caire, “SPARCs for Unsourced Random Access,” arXiv:1901.06234 [cs, math], Jun. 2020, Accessed: Aug. 24, 2020. [Online]. Available: http://arxiv.org/abs/1901.06234