تقرير
Design and Implementation of Low Complexity Reconfigurable Filtered-OFDM based LDACS
| العنوان: | Design and Implementation of Low Complexity Reconfigurable Filtered-OFDM based LDACS |
|---|---|
| المؤلفون: | Agrawal, N., Ambede, A., Darak, S. J., Vinod, A. P., Madhukumar, A. S. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Electrical Engineering and Systems Science - Signal Processing |
| الوصف: | L-band Digital Aeronautical Communication System (LDACS) aims to exploit vacant spectrum in L-band via spectrum sharing, and orthogonal frequency division multiplexing (OFDM) is the currently accepted LDACS waveform. Recently, various works dealing with improving the spectrum utilization of LDACS via filtering/windowing are being explored. In this direction, we propose an improved and low complexity reconfigurable filtered OFDM (LRef-OFDM) based LDACS using novel interpolation and masking based multi-stage digital filter. The proposed filter is designed to meet the stringent non-uniform spectral attenuation requirements of LDACS standard. It offers significantly lower complexity as well as higher transmission bandwidth than state-of-the-art approaches. We also integrate the proposed filter in our end-to-end LDACS testbed realized using Zynq System on Chip and analyze the performance in the presence of $L$-band legacy user interference as well as LDACS specific wireless channels. Via extensive experimental results, we demonstrate the superiority of the proposed LRef-OFDM over OFDM and Filtered-OFDM based LDACS in terms of power spectral density, bit error rate, implementation complexity, and group delay parameters. Comment: Paper with Appendix |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2009.10109 |
| رقم الأكسشن: | edsarx.2009.10109 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |