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Empirical modelling and analysis of phase noise in OFDM systems
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Empirical modelling and analysis of phase noise in OFDM systems
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Journal Article
Empirical modelling and analysis of phase noise in OFDM systems
2024
Overview
Based on empirical data of an orthogonal frequency division multiplexing system in realistic environments of next‐generation cellular networks, a new analytical model of phase noise and numerical characteristics of the common phase error and intercarrier interference are derived. Applying an asymptotic theory of probability, analytical expressions are present to approximate the mean vector and the covariance matrix of the intercarrier interference. The approximation expression of the covariance matrix is accurate enough and only has three parameters. When applied to estimate original symbols based on additive white Gaussian noise channel, a Gibbs sampler performs better than the current estimation algorithm following Weiner process phase noise. Based on empirical data of an orthogonal frequency division multiplexing system, a new analytical model of phase noise and numerical characteristics of the common phase error and intercarrier interference are derived. When applied to estimate original symbols based on AWGN channel, the proposed algorithm based on the model performs better than the current algorithm for phase noise.
Publisher
Wiley
Subject
