Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge

Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge

Citation Author(s):
Seyed Ali
Hassani
KU Leuven
Xianjun
Jiao
IDLab, imec - Gent University
Ingrid
Moerman
IDLab, imec - Gent University
Sofie
Pollin
KU Leuven
Submitted by:
Seyed Ali Hassani
Last updated:
Mon, 03/30/2020 - 16:05
DOI:
10.21227/m9dg-pb95
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Collision detection (CD) is a key capability of carrier sense multiple access (CSMA) based medium access control (MAC) protocol. Applying CD, the transmitter can abort transmission immediately so that the power can be saved. This technique does not need the peer receiver to give feedback on whether there is a packet collision, and hence, the overall overhead is significantly low. The challenge, however, is to operate in transmit time and instantly detect the week colliding signal in the presence of strong self-interference (SI). Using this dataset, we investigate two CD methods and compares them regarding the detection performance and the false alarm rate. The first method trains a convolutional neural network (CNN) model which operates on raw baseband samples, without the need for pre-decoding. The second method treats the SI as a normal signal and estimates the signal to noise ratio (SNR): low SNR implies there is a collision because the pure SI is expected to have high SNR. Both models are evaluated by IEEE 802.15.4-like measured and simulated signals, available in the dataset. The results show that collisions up to 30 dB below the SI signal can be detected precisely within 20 us, while the proposed models can deliver an acceptably low false alarm rate < 1.5%.

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Instant collision detection (CD) can be achieved at the transmitter side more efficiently. To detect the collision, though, the device has to overcome the strong self-interference (SI) in such a way that it can listen to the channel in transmit time. This capability is feasible by in-band full-duplex (IBFD) technology, which allows two nodes to communicate concurrently over the same frequency channel. Recent works have shown the network-level benefits of using IBFD for collision detection, in the sense of power efficiency, throughput, and delay performance. By any means, the performance of these MAC protocols highly depends on the rapidity and precision of the CD method, although the collision detection in this context has still not been investigated thoroughly. By leveraging multiple hidden convolutional layers, modern machine learning techniques have confirmed their effectiveness in a wide range of applications, such as automatic image recognition, and network optimization. Motivated by its remarkable success in various fields as well as its real-time functionality, in this work we investigate whether a convolutional neural network (CNN) can be exploited to accelerate CD without sacrificing the detection accuracy. Meanwhile, we realize that the CD problem can be mapped to traditional SNR estimation problem. When there is a collision, the signal SNR will drop. Lots of domain knowledge are there with regard to signal demodulation and SNR estimation. On the contrary, CNN could be regarded as a kind of domain-specific knowledge less method. It will be interesting to see the performance comparison between the two methodologies. This kind of comparison will inspire the research community to study further about how should we combine the domain-specific knowledge (DSK) with CNN. Besides, to encourage future studies, we offer free access to the dataset and programs in IEEE DataPort, which allows researchers to reproduce our results out of the box or investigate different approaches.

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[1] Seyed Ali Hassani, Xianjun Jiao, Ingrid Moerman, Sofie Pollin, "Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge", IEEE Dataport, 2020. [Online]. Available: http://dx.doi.org/10.21227/m9dg-pb95. Accessed: Apr. 08, 2020.
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author = {Seyed Ali Hassani; Xianjun Jiao; Ingrid Moerman; Sofie Pollin },
publisher = {IEEE Dataport},
title = {Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge},
year = {2020} }
TY - DATA
T1 - Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge
AU - Seyed Ali Hassani; Xianjun Jiao; Ingrid Moerman; Sofie Pollin
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Seyed Ali Hassani, Xianjun Jiao, Ingrid Moerman, Sofie Pollin. (2020). Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge. IEEE Dataport. http://dx.doi.org/10.21227/m9dg-pb95
Seyed Ali Hassani, Xianjun Jiao, Ingrid Moerman, Sofie Pollin, 2020. Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge. Available at: http://dx.doi.org/10.21227/m9dg-pb95.
Seyed Ali Hassani, Xianjun Jiao, Ingrid Moerman, Sofie Pollin. (2020). "Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge." Web.
1. Seyed Ali Hassani, Xianjun Jiao, Ingrid Moerman, Sofie Pollin. Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge [Internet]. IEEE Dataport; 2020. Available from : http://dx.doi.org/10.21227/m9dg-pb95
Seyed Ali Hassani, Xianjun Jiao, Ingrid Moerman, Sofie Pollin. "Instantaneous Signal Collision Detection Using In-Band Full-Duplex: Machine Learning VS Domain-specific Knowledge." doi: 10.21227/m9dg-pb95