Investigation of Blanking Nonlinearity in OFDM Systems

Author

Epple, Ulrich ; Shibli, Kamel ; Schnell, Michael

Author_Institution

Inst. of Commun. & Navig., German Aerosp. Center (DLR), Wessling, Germany

fYear

2011

fDate

5-9 June 2011

Firstpage

1

Lastpage

5

Abstract

In this paper, we analyze the influence of a blanking nonlinearity onto OFDM systems in detail. We will derive closed-form expressions for the signal degradation and the interference, which is introduced by the blanking nonlinearity. The theoretical results will be validated by simulations, which illustrate the detrimental blanking influence in a descriptive way. In addition it will be shown how the results affect an OFDM receiver and how the receiver can be adapted to the blanking nonlinearity. Simulation results confirm a gain of 3 dB at BER=1·10^-3 for a 16QAM transmission, when adapting the receiver accordingly.

Keywords

OFDM modulation; error statistics; quadrature amplitude modulation; radio receivers; radiofrequency interference; BER; OFDM receiver; OFDM system nonlinearity; QAM transmission; blanking nonlinearity; closed form expression; detrimental blanking; signal degradation; signal interference; Bit error rate; Blanking; Interference; OFDM; Receivers; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (ICC), 2011 IEEE International Conference on

Conference_Location

Kyoto

ISSN

1550-3607

Print_ISBN

978-1-61284-232-5

Electronic_ISBN

1550-3607

Type

conf

DOI

10.1109/icc.2011.5962893

Filename

5962893