BayesAoA: A Bayesian method for Computation Efficient Angle of Arrival Estimation

10/15/2021

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by   Akshay Sharma, et al.

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The angle of Arrival (AoA) estimation is of great interest in modern communication systems. Traditional maximum likelihood-based iterative algorithms are sensitive to initialization and cannot be used online. We propose a Bayesian method to find AoA that is insensitive towards initialization. The proposed method is less complex and needs fewer computing resources than traditional deep learning-based methods. It has a faster convergence than the brute-force methods. Further, a Hedge type solution is proposed that helps to deploy the method online to handle the situations where the channel noise and antenna configuration in the receiver change over time. The proposed method achieves 92% accuracy in a channel of noise variance 10^-6 with 19.3% of the brute-force method's computation.