A computationally efficient simulation chain for OFDM-based wireless systems

Author

Poikonen, Jussi ; Ojaniemi, Jaakko ; Nybom, Kristian ; Gómez-Barquero, David ; Jokela, Tero

Author_Institution

Aalto Univ., Aalto, Finland

fYear

2011

fDate

8-10 June 2011

Firstpage

1

Lastpage

6

Abstract

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.

Keywords

OFDM modulation; fading channels; hidden Markov models; simulation; video signal processing; OFDM; computationally efficient simulation chain; finite-state hidden Markov models; frequency-selective fading channels; log likelihood ratio values; signal constellation; time-selective fading channels; urban mobile channel; video broadcast system; wireless systems; Computational modeling; Correlation; Hidden Markov models; Markov processes; OFDM; Rayleigh channels; Channel modeling and simulation; LDPC coding; performance evaluation; wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Multimedia Systems and Broadcasting (BMSB), 2011 IEEE International Symposium on

Conference_Location

Nuremberg

ISSN

2155-5044

Print_ISBN

978-1-61284-121-2

Electronic_ISBN

2155-5044

Type

conf

DOI

10.1109/BMSB.2011.5954893

Filename

5954893