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Communication Dans Un Congrès Année : 2018

Iterative Equalization Based on Expectation Propagation: a Frequency Domain Approach.

Résumé

A novel single-carrier frequency domain equalization (SC-FDE) scheme is proposed, by extending recent developments in iterative receivers that use expectation propagation (EP), a message passing formalism for approximate Bayesian inference. Applying EP on the family of white multivariate Gaussian distributions allows deriving double-loop frequency domain receivers with single-tap equalizers. This structure enables low computational complexity implementation via Fast-Fourier transforms (FFT). Self-iterations between the equalizer and the demapper and global turbo iterations with the channel decoder provide numerous combinations for the performance and complexity trade-off. Numerical results show that the proposed structure outperforms alternative single-tap FDEs and that its achievable rates reach the channel symmetric information rate.
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Dates et versions

hal-03636685 , version 1 (11-04-2022)

Identifiants

  • HAL Id : hal-03636685 , version 1
  • OATAO : 22437

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Serdar Sahin, Antonio Cipriano, Charly Poulliat, Marie-Laure Boucheret. Iterative Equalization Based on Expectation Propagation: a Frequency Domain Approach.. 26th European Signal and Image Processing Conference (EUSIPCO 2018), Sep 2018, Rome, Italy. pp.932-936. ⟨hal-03636685⟩
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