DocumentCode :
862344
Title :
Impulsive noise suppression in OFDM-based communication systems
Author :
Zhidkov, Sergey V.
Author_Institution :
Syst. R&D Center, Samsung Electron., Giheung, South Korea
Volume :
49
Issue :
4
fYear :
2003
Firstpage :
944
Lastpage :
948
Abstract :
Orthogonal frequency division multiplexing (OFDM) is a technique used for terrestrial digital video broadcasting (DVB-T) and many other modern applications. The longer OFDM symbol duration provides an advantage in a presence of weak impulsive noise, because impulsive noise energy is spread among simultaneously transmitted OFDM sub-carriers. However, it has been recently recognized that this advantage turns into a disadvantage if the impulsive noise energy exceeds certain threshold. In this paper the algorithm for impulsive noise suppression in OFDM receivers is proposed and investigated. Whereas traditional methods for impulsive noise suppression are implemented in a time domain before OFDM demodulation, proposed algorithm compensates impulsive noise in a frequency domain after OFDM demodulation and channel equalization. The method is applied to DVB-T and its performance is studied by means of simulation.
Keywords :
OFDM modulation; digital video broadcasting; impulse noise; interference suppression; television interference; television receivers; OFDM-based communication systems; channel equalization; frequency domain; impulsive noise suppression; orthogonal frequency division multiplexing; terrestrial digital video broadcasting; weak impulsive noise; AWGN; Additive white noise; Demodulation; Digital audio broadcasting; Digital video broadcasting; Gaussian noise; Interference; Iterative algorithms; OFDM modulation; Signal processing algorithms;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/TCE.2003.1261179
Filename :
1261179
Link To Document :
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