Title :
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
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;
Conference_Titel :
High Frequency Postgraduate Student Colloquium, 1999
Conference_Location :
Leeds
Print_ISBN :
0-7803-5577-6
DOI :
10.1109/HFPSC.1999.809271
