Variational Bayesian Framework for Receiver Design in the Presence of Phase Noise in MIMO Systems

Provided by: Chalmers University of Technology
Topic: Mobility
Format: PDF
In this paper, the problem of receiver design for phase noise estimation and data detection in the presence of oscillator phase noise in a point-to-point Multiple-Input Multiple-Output (MIMO) system is addressed. First, the authors discuss some interesting and challenging aspects in receiver design for MIMO systems in the presence of Wiener phase noise. Then, using the Variational Bayesian (VB) framework, a joint iterative phase noise estimator and symbol detector are developed based on inverse Gibbs or variational free energy maximization. Further, the Symbol Error Probability (SEP) of the newly proposed iterative scheme is compared with the optimal Maximum Likelihood (ML) detector with perfect phase information for 16-Phase Shift Keying (PSK) and 16-Quadrature Amplitude Modulation (QAM) schemes.

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