Improving an OFDM reception using an adaptive Nyquist windowing

Author

Muschallik, Claus

Author_Institution

Adv. RF-Lab. VRF, Thomson Multimedia, Villingen, Germany

Volume

42

Issue

3

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

259

Lastpage

269

Abstract

This paper explains how a windowing of the OFDM-signal in the time domain contributes to its improved reception. The windowing uses the part of the guard interval that is not disturbed by multipath reception. The length of the window adapts to the transmission conditions. This window may be realized with a raised cosine or other kind of function that fulfils the Nyquist criterion. An easy way to implement the windowing while keeping the FFT complexity low is also shown. The impact of windowing for discrete sine spurious, white noise, phase noise and frequency deviations is also given. OFDM is of interest in terrestrial broadcasting

Keywords

Nyquist criterion; adaptive signal processing; fast Fourier transforms; frequency division multiplexing; phase noise; radio broadcasting; radio receivers; radiofrequency interference; time-domain analysis; white noise; FFT complexity; Nyquist criterion; OFDM reception; adaptive Nyquist windowing; discrete sine spurious noise; frequency deviations; guard interval; multipath reception; phase noise; raised cosine; time domain; transmission conditions; white noise; Broadcasting; Delay; Filter bank; Frequency domain analysis; Intersymbol interference; Noise robustness; OFDM modulation; Phase noise; Pulse modulation; White noise;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.536046

Filename

536046