A discussion of the effects of amplifier back-off on OFDM

Author

Dixon, B.J. ; Pollard, R.D. ; Iexekiel, S.

Author_Institution

Sch. of Electron. & Electr. Eng., Leeds Univ., UK

fYear

1999

fDate

1999

Firstpage

14

Lastpage

19

Abstract

There has been increased interest in high data rate indoor communications systems using orthogonal frequency division multiplexing (OFDM). This paper details both simulation and experimental results, regarding the sensitivity of such signals to amplifier nonlinearities. In particular the relationship between BER degradation and required amplifier back-off for a given 1 dB compression and IP₃ intercept point is investigated. The sensitivity of the system is shown for a full BER curve, ranging down to a BER of approximately 10^-4

Keywords

HF amplifiers; OFDM modulation; UHF amplifiers; VHF amplifiers; error statistics; indoor radio; sensitivity analysis; 0.01 to 400 MHz; BER degradation; IP₃ intercept point; OFDM; amplifier back-off; amplifier nonlinearities; compression; high data rate indoor communications; orthogonal frequency division multiplexing; sensitivity; Bandwidth; Bit error rate; Degradation; Delay; Fading; Fluctuations; Microwave photonics; OFDM; Phase distortion; Power amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

High Frequency Postgraduate Student Colloquium, 1999

Conference_Location

Leeds

Print_ISBN

0-7803-5577-6

Type

conf

DOI

10.1109/HFPSC.1999.809271

Filename

809271