MCMC sampling for joint estimation of phase distortions and transmitted symbols in OFDM systems - IMT - Institut Mines-Télécom Access content directly
Journal Articles Digital Signal Processing Year : 2011

MCMC sampling for joint estimation of phase distortions and transmitted symbols in OFDM systems

Yves Delignon
  • Function : Author

Abstract

In this paper, we address the challenging problem of the OFDM reception in the presence of phase distortions. Phase noise and carrier frequency offset seriously degrade the performances of OFDM systems by destroying orthogonality of the subcarriers. Based on a Markov Chain Monte Carlo sampling mechanization, our approach consists in jointly estimating the phase noise, the frequency offset and the transmitted symbols. The proposed algorithm is implemented in the time domain in order to benefit from the redundancy information induced by the cyclic prefix and from the time correlation of the OFDM signal owing to the presence of virtual and/or pilot subcarriers. The algorithm's efficiency is enhanced by incorporating the Rao-Blackwellization technique as well as various sampling improvement strategies. Simulation results, provided in terms of bit error rate (BER) and mean square error (MSE), clearly illustrate the efficiency and the robustness of the proposed estimator.
Fichier principal
Vignette du fichier
Paper_DSP2010.pdf (182.1 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-00566491 , version 1 (16-02-2011)

Identifiers

Cite

François Septier, Yves Delignon. MCMC sampling for joint estimation of phase distortions and transmitted symbols in OFDM systems. Digital Signal Processing, 2011, 21 (2), pp.341-353. ⟨10.1016/j.dsp.2010.10.003⟩. ⟨hal-00566491⟩
167 View
315 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More