P
Per Ola Börjesson
Researcher at Lund University
Publications - 101
Citations - 6929
Per Ola Börjesson is an academic researcher from Lund University. The author has contributed to research in topics: Orthogonal frequency-division multiplexing & Communication channel. The author has an hindex of 24, co-authored 101 publications receiving 6744 citations. Previous affiliations of Per Ola Börjesson include Luleå University of Technology.
Papers
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Journal ArticleDOI
ML estimation of time and frequency offset in OFDM systems
TL;DR: In this paper, the joint maximum likelihood (ML) symbol-time and carrier-frequency offset estimator is presented for orthogonal frequency-division multiplexing (OFDM) systems.
Proceedings ArticleDOI
On channel estimation in OFDM systems
TL;DR: The authors present the MMSE and LS estimators and a method for modifications compromising between complexity and performance and the symbol error rate for a 18-QAM system is presented by means of simulation results.
Journal ArticleDOI
A time and frequency synchronization scheme for multiuser OFDM
J.-J. van de Beek,Per Ola Börjesson,Marie-Laure Boucheret,Daniel Landström,J.M. Arenas,Per Ödling,Christer Östberg,Matthias Wahlqvist,Sarah Kate Wilson +8 more
TL;DR: Performance results of an orthogonal frequency division multiplexing (OFDM)-based radio interface based on the universal mobile telecommunication system (UMTS) parameters are shown.
Journal ArticleDOI
Analysis of DFT-Based Channel Estimators for OFDM
TL;DR: The analysis of three low-complexity channel estimators, based on the discrete Fourier transform (DFT), for orthogonal frequency-division multiplexing (OFDM) systems shows that this type of estimators may experience an irreducible error floor at high SNRs.
Journal ArticleDOI
Simple Approximations of the Error Function Q(x) for Communications Applications
Per Ola Börjesson,C.-E. Sundberg +1 more
TL;DR: A class of functions are given, where the choice of two parameters result in good upper bounds, lower bounds and approximations on Q(x), suitable for programmable pocket calculators.