On the reduction of the out-of-band radiation of OFDM-signals

OFDM is very suitable as a modulation scheme for future indoor mobile radio systems due to its simple realization and the resistance to interference caused by frequency-selective fading. Opposed to the various advantages of OFDM there is the disadvantage of a nonconstant envelope that, in the case o...

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Bibliographic Details
Published in1998 IEEE International Conference on Communications Vol. 3; pp. 1304 - 1308 vol.3
Main Authors Pauli, M., Kuchenbecker, P.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1998
Subjects
Bandwidth
Digital filters
Fading
Filtering
OFDM modulation
Phase modulation
Radio transmitters
Radiofrequency amplifiers
Shape
Telecommunication standards
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Summary:OFDM is very suitable as a modulation scheme for future indoor mobile radio systems due to its simple realization and the resistance to interference caused by frequency-selective fading. Opposed to the various advantages of OFDM there is the disadvantage of a nonconstant envelope that, in the case of a nonlinear characteristic of the transmitter amplifier, leads to undesirable out-of-band radiation. Results concerning the reduction of out-of-band radiation are presented which were achieved by a new method we call BERC (bandwidth efficient reduction of the crest factor). Furthermore, the performance of an algorithm to decrease the out-of-band radiation caused by the rectangular shape of the basic pulse is investigated.
ISBN:0780347889
9780780347885
DOI:10.1109/ICC.1998.683036