A computationally efficient simulation chain for OFDM-based wireless systems

A computationally efficient simulation chain for OFDM-based wireless systems

We present a method for modeling OFDM transmission over time- and frequency-selective fading channels using finite-state hidden Markov models. The proposed approach has improved fading autocorrelation accuracy compared to previous related models. Also, we present a way of producing log likelihood ra...

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Bibliographische Detailangaben
Hauptverfasser: Poikonen, Jussi, Ojaniemi, Jaakko, Nybom, Kristian, Gomez-Barquero, David, Jokela, Tero
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Channel modeling and simulation
Computational modeling
Correlation
Hidden Markov models
LDPC coding
Markov processes
OFDM
performance evaluation
Rayleigh channels
wireless communication
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Beschreibung
Zusammenfassung:We present a method for modeling OFDM transmission over time- and frequency-selective fading channels using finite-state hidden Markov models. The proposed approach has improved fading autocorrelation accuracy compared to previous related models. Also, we present a way of producing log likelihood ratio values as output of the finite-state model for any signal constellation. As a case study, we configure the proposed model according to the second generation terrestrial digital video broadcast system operating over a typical urban mobile channel.
ISSN:2155-5044
2155-5052
DOI:10.1109/BMSB.2011.5954893