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Autoencoder-Based Unequal Error Protection Codes [article]

Vukan Ninkovic, Dejan Vukobratovic, Christian Häger, Henk Wymeersch, Alexandre Graell i Amat
2021 arXiv   pre-print
Ninkovic are protected differently [6] .  ...  Vukobratovic are with the Department of Power, Electronics and Communications Engineering, University of Novi Sad, 21000, Novi Sad, Serbia (e-mail: {ninkovic, dejanv}@uns.ac.rs). C. Häger, H.  ... 
arXiv:2104.08190v1 fatcat:4mt3awgh7bb4dnbtq75trdh5sy

Preamble-Based Packet Detection in Wi-Fi: A Deep Learning Approach [article]

Vukan Ninkovic, Dejan Vukobratovic, Aleksandar Valka, Dejan Dumic
2020 arXiv   pre-print
Wi-Fi systems based on the family of IEEE 802.11 standards that operate in unlicenced bands are the most popular wireless interfaces that use Listen Before Talk (LBT) methodology for channel access. Distinctive feature of majority of LBT-based systems is that the transmitters use preambles that precede the data to allow the receivers to acquire initial signal detection and synchronization. The first digital processing step at the receiver applied over the incoming discrete-time complex-baseband
more » ... samples after analog-to-digital conversion is the packet detection step, i.e., the detection of the initial samples of each of the frames arriving within the incoming stream. Since the preambles usually contain repetitions of training symbols with good correlation properties, conventional digital receivers apply correlation-based methods for packet detection. Following the recent interest in data-based deep learning (DL) methods for physical layer signal processing, in this paper, we challenge the conventional methods with DL-based approach for Wi-Fi packet detection. Using one-dimensional Convolutional Neural Networks (1D-CNN), we present a detailed complexity vs performance analysis and comparison between conventional and DL-based Wi-Fi packet detection approaches.
arXiv:2009.05740v1 fatcat:3sh2sjoea5f6xlcrkd24egxiiy

Deep Learning Based Packet Detection and Carrier Frequency Offset Estimation in IEEE 802.11ah

Vukan Ninkovic, Aleksandar Valka, Dejan Dumic, Dejan Vukobratovic
2021 IEEE Access  
Ninkovic et al.: Deep Learning Based Packet Detection and Carrier Frequency Offset Estimation in IEEE 802.11ah FIGURE 14.  ... 
doi:10.1109/access.2021.3096853 fatcat:hasdswe7djfpnh77gg4535axne

Deep Learning Based Packet Detection and Carrier Frequency Offset Estimation in IEEE 802.11ah [article]

Vukan Ninkovic, Aleksandar Valka, Dejan Dumic, Dejan Vukobratovic
2021 arXiv   pre-print
Wi-Fi systems based on the IEEE 802.11 standards are the most popular wireless interfaces that use Listen Before Talk (LBT) method for channel access. The distinctive feature of a majority of LBT-based systems is that the transmitters use preambles that precede the data to allow the receivers to perform packet detection and carrier frequency offset (CFO) estimation. Preambles usually contain repetitions of training symbols with good correlation properties, while conventional digital receivers
more » ... ply correlation-based methods for both packet detection and CFO estimation. However, in recent years, data-based machine learning methods are disrupting physical layer research. Promising results have been presented, in particular, in the domain of deep learning (DL)-based channel estimation. In this paper, we present a performance and complexity analysis of packet detection and CFO estimation using both the conventional and the DL-based approaches. The goal of the study is to investigate under which conditions the performance of the DL-based methods approach or even surpass the conventional methods, but also, under which conditions their performance is inferior. Focusing on the emerging IEEE 802.11ah standard, our investigation uses both the standard-based simulated environment, and a real-world testbed based on Software Defined Radios.
arXiv:2004.11716v2 fatcat:xf5k27hddfgwpgqjkt3dhtauoe