Abstract
In this paper, we present an iterative approach for the cancellation of phase errors induced by local oscillators in anOfdm receiver as well as the distortion resulting from nonlinear amplifiers. We investigate the influence of several parameters on the system performances, such as the modulation scheme, the number of carriers and the clipping ratio. Simulation results prove the effectiveness of the proposed algorithm for the cancellation of phase errors and non-linear distortion. We show that an error floor occurs for high values of the phase noise or the clipping ratio. This effect can be alleviated using an appropriate channel coding scheme, in conjunction with our iterative algorithm, for the correction of residual errors. We also show that the proposed algorithm complexity is nearly a linear function of the number of sub-carriers.
Résumé
L’étude présentée dans cet article a pour but d’introduire une nouvelle approche itérative pour la correction des erreurs de phase dues aux oscillateurs locaux dans les récepteursOfdm, ainsi que de la distorsion induite par les amplificateurs non linéaires. Nous observons l’influence d’un certain nombre de paramètres sur les performances globales du système, en particulier le type de modulation adopté, le nombre de sous-porteuses orthogonales et le rapport de saturation. Les résultats de simulation présentés montrent l’efficacité de l’algorithme proposé pour l’annulation des erreurs de phase et de la distorsion non linéaire. Dans le cas d’un bruit de phase ou d’une distorsion importante, on démontre que l’utilisation de notre algorithme en association avec un schéma de codage canal approprié permet de s’affranchir du problème de saturation par la correction des erreurs résiduelles. Nous montrons également que la complexité de l’algorithme proposé est une fonction quasi-linéaire du nombre de sous-porteuses.
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References
IEEE Standard 802.11a-1999, part 11 : WirelessLan Medium Access Control and Physical Layer Specifications.
Etsi, Digital Video Broadcasting (Dvb): Framing Structure, Channel Coding and Modulation for Digital Terrestrial Television, EN 300 744, V. 1.4.1, January 2001.
Etsi, Radio broadcasting systems: Digital Audio Broadcasting (Dab) to Mobile, Portable and Fixed Receivers,En 300 401, V. 1.3.2, September 2000.
Bahai (A.),Saltberg (B.), Multi-Carrier Digital Communications: Theory and Applications ofOfdm,Kluwer Academic, 1999.
Lawrey (E.),Kikkert (C. J.), Peak to Average Power Ratio Reduction ofOfdm Signals using Peak Reduction Carriers,Fifth International Symposium on Signal Processing and its Applications, pp. 737–740, 1999.
Armada (A.), Understanding the Effects of Phase Noise in Orthogonal Frequency Division Multiplexing (Ofdm),IEEE Transactions on Broadcasting,47, 2, pp. 153–159, June 2001.
Robertson (P.),Kaiser (S.), Analysis of the Effects of Phase-Noise in Orthogonal Frequency Division Multiplex (Ofdm) Systems,IEEE International Conference on Communications, pp. 1652–1657, 1995.
Petrovic (D.),Rave (W.),Fettweis (G.), Phase Noise Suppression inOfdm Including Intercarrier Interference,International Ofdm Workshop, pp. 219–224, 2003.
Gholami (M.),Nader-Esfahani (S.),Eftekhar (A.), A New Method of Phase Noise Compensation in OFDM,IEEE International Conference on Communications, pp. 3443–3446, 2003.
Tellado (J.), HOO (L.), Cioffi (J.), Maximum-Likelihood Detection of Nonlinearly Distorted Multicarrier Symbols by Iterative Decoding,IEEE Transactions on Communications,51, 2, pp. 218–228, February 2003.
Chen (H.), Haimovich (A.), Iterative Estimation and Cancellation of Clipping Noise forOfdm Signals,IEEE Communication Letters,7, 7, pp. 305–307, July 2003.
Costa (E.), Pupolin (S.), M-qam-ofdm System Performance in the Presence of a Nonlinear Amplifier and Phase Noise,IEEE Transactions on Communications,50, 3, pp. 462–472, March 2002.
Anishchenko (V.S.),Vadivasova (T.E).,Okrokvertskhov (G.A.),Strelkova (G.I.), Correlation Analysis of Dynamical Chaos,Elseiver, Physica A 325, pp. 199–212, 2003.
Proakis (J. G.), Digital Communications,McGraw-Hill Editions, 2001.
Declercq (D.), Giannakis (G. B.), Recovering ClippedOfdm Symbols with Bayesian Inference,International Conference on Acoustics, Speech, and Signal Processing,1, pp. 157–160, 2000.
Proakis (D.),Manolakis (D.), Digital Signal Processing: Principles, Algorithms and Applications,Prentice Hall, 1996.
Jedrzejewski (F), Introduction aux Méthodes Numériques,Springer-Verlag, Paris, 2001.
Farah (J.),Arndt (M.),Lienard (J.), Performance Evaluation of different channel coding schemes for time-varying multi-path channels inUmts/tdd,Globecom Conference, pp. 1235–1240, 2001.
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Marx, F., Farah, J. & Francis, C. Iterative correction of phase noise and nonlinear distortion in orthogonal frequency division multiplexing (OFDM) systems. Ann. Télécommun. 60, 1197–1218 (2005). https://doi.org/10.1007/BF03219843
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DOI: https://doi.org/10.1007/BF03219843
Key words
- Ofdm
- Phase modulation noise
- Non linear distortion
- Iteration
- Algorithm complexity
- Error correction
- Error correcting code