Institutional Repository
Technical University of Crete
Technical University of Crete
EN
|
EL
| URI: | http://purl.tuc.gr/dl/dias/5E3CE2FD-EE9F-417A-BB2A-55E00BF58145 | ||
| Year | 2021 | ||
| Type of Item | Diploma Work | ||
| License |
|
||
| Bibliographic Citation | Emmanouil Logothetis, "Efficient WLAN link simulations by means of EESM", Diploma Work, School of Electrical and Computer Engineering, Technical University of Crete, Chania, Greece, 2021 https://doi.org/10.26233/heallink.tuc.90666 | ||
| Appears in Collections |
The widespread use of wireless local area networks (WLANs) in recent years and the continued need of higher transmission data rates resulted in the fast growth of WLAN systems. The simulation complexity of such systems however is huge. In this thesis, we focus on the IEEE 802.11n standard, which is based on high-throughput (HT) orthogonal frequency-division multiplexing (OFDM), and provide low time-complexity simulations by means of the exponential effective SNR mapping (EESM) method. The EESM method is a fundamental tool for evaluating and studying next generation OFDM-based wireless systems. It maps the set of different SNR values per subcarrier into a single effective flat-fading SNR, at which the system has the same performance. The EESM method is implemented for SISO, SIMO 1x2, and MIMO 2x2 configurations, in conjunction with the IEEE TGn Model-B frequency-selective channel. The simulator is based on the Matlab WLAN Toolbox. Full link simulations are performed to obtain the BER vs post-processing SNR curves for 20MHz channels, which are compared to the curves obtained through the EESM method. Extensive simulations indicate that the low-complexity EESM-based link simulations provide reliable BER vs post-processing SNR estimates. The latter makes EESM acceptable for abstraction in system level simulation to improve time efficiency.
Copyright © DIAS 2013
