Non-Circular Combined Expectation Propagation and Variational Bayes for Semi-Blind Channel Estimation in Cell-Free Systems
2025 International Conference on Computing, Networking and Communications (ICNC)（2025）
Key words
Cell-free System,Channel Estimation,Expectation Propagation,Semi-blind Channel Estimation,User Data,Access Points,Multiple-input Multiple-output Systems,Joint Estimation,Massive Multiple-input Multiple-output,Massive Multiple-input Multiple-output Systems,Quadrature Components,In-phase Components,Pilot Sequences,Average Constraint,Finite Alphabet,User Terminals,Covariance Matrix,Diagonal Matrix,Probability Density Function,Additive Noise,Block Diagonal Matrix,Posterior Mean,Posterior Beliefs,Feedback Messages,Joint Probability Density Function,Factor Graph,Gaussian Mixture Model,Block Diagonal,Data Symbols,Second-order Moments
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