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Learning-to-Learn the Wave Angle Estimation
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AI
DOI：10.1109/TCOMM.2024.3381726.png)
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Abstract
En 中文
A precise incident wave angle estimation in aerial communication is a key enabler in sixth-generation wireless communication network. With this goal, a generic 3-dimensional (3D) channel model is analyzed for air-to-air (A2A) networks under antenna misalignment, radio frequency impairments and polarization loss. The unique aspects of each aerial node are highlighted and the few-shot learning as a model agnostic meta-learning (MAML) classifier is proposed for learning-to-learn (L2L) incident wave angle estimation by utilizing the received signal strength (RSS). Additionally, a more computationally efficient technique, first order model agnostic meta-learning (FOMAML) is implemented. It has been observed that the proposed approach reaches up to 85% training accuracy and 75.4% evaluation accuracy with MAML. Regarding this, a convergence rate and accuracy trade-off have been established for several cases of MAML and FOMAML. For different L2L models trained with limited data, heuristic accuracy performance is determined by an upper bound of the probability of confidence.
Keywords:
Antennas
Estimation
Autonomous aerial vehicles
Metalearning
Three-dimensional displays
Channel models
Channel estimation
3-dimensional (3D) channel modeling
meta-learning
localization
aerial communication
model generalization
Journal
IF:
8.3
Papers:
1.2W
Citations:
3.6W