The effects of nonlinear power amplifiers on the performance of a HiperLAN/2 system

N.A. Moseley; Roelof Schiphorst; Cornelis H. Slump

doi:10.1049/ic:20050387

The effects of nonlinear power amplifiers on the performance of a HiperLAN/2 system

N.A. Moseley
, Roelof Schiphorst
, Cornelis H. Slump

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Real-world power amplifiers (PAs) are weakly nonlinear. The nonlinear behavior causes subcarrier intermodulation in OFDM based transmitters. This paper shows the results of simulations performed on a software HiperLAN/2 system with a nonlinear power amplifier model. We show that HiperLAN/2 is much less sensitive to nonlinearities of the PA when BPSK or QPSK modulated sub-carriers are used compared to QAM16 or QAM64 modulated sub-carriers. Both QAM16 and QAM64 require a PA backoff amount of at least 5 dB while BPSK and QPSK don't require any backoff. This means that BPSK or QPSK modulated OFDM is more power efficient.

Original language	Undefined
Title of host publication	The 2nd IEE/EURASIP Conference on DSPenabledRadio
Place of Publication	Southampton
Publisher	IEE
Pages	17
Number of pages	6
ISBN (Print)	0-86341-560-1
DOIs	https://doi.org/10.1049/ic:20050387
Publication status	Published - 19 Aug 2005
Event	The 2nd IEE/EURASIP Conference on DSPenabledRadio - Southampton, UK Duration: 19 Sept 2005 → 20 Sept 2005

Publication series

Name
Publisher	IEE

Conference

Conference	The 2nd IEE/EURASIP Conference on DSPenabledRadio
Period	19/09/05 → 20/09/05
Other	19-20 Sep. 2005

Keywords

EWI-12022
IR-53728
METIS-226915

Access to Document

10.1049/ic:20050387

moseley05effects

http://eprints.eemcs.utwente.nl/secure2/12022/01/01575350.pdf

Cite this

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title = "The effects of nonlinear power amplifiers on the performance of a HiperLAN/2 system",

abstract = "Real-world power amplifiers (PAs) are weakly nonlinear. The nonlinear behavior causes subcarrier intermodulation in OFDM based transmitters. This paper shows the results of simulations performed on a software HiperLAN/2 system with a nonlinear power amplifier model. We show that HiperLAN/2 is much less sensitive to nonlinearities of the PA when BPSK or QPSK modulated sub-carriers are used compared to QAM16 or QAM64 modulated sub-carriers. Both QAM16 and QAM64 require a PA backoff amount of at least 5 dB while BPSK and QPSK don't require any backoff. This means that BPSK or QPSK modulated OFDM is more power efficient.",

keywords = "EWI-12022, IR-53728, METIS-226915",

author = "N.A. Moseley and Roelof Schiphorst and Slump, \{Cornelis H.\}",

year = "2005",

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doi = "10.1049/ic:20050387",

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booktitle = "The 2nd IEE/EURASIP Conference on DSPenabledRadio",

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note = "The 2nd IEE/EURASIP Conference on DSPenabledRadio ; Conference date: 19-09-2005 Through 20-09-2005",

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AU - Moseley, N.A.

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Y1 - 2005/8/19

N2 - Real-world power amplifiers (PAs) are weakly nonlinear. The nonlinear behavior causes subcarrier intermodulation in OFDM based transmitters. This paper shows the results of simulations performed on a software HiperLAN/2 system with a nonlinear power amplifier model. We show that HiperLAN/2 is much less sensitive to nonlinearities of the PA when BPSK or QPSK modulated sub-carriers are used compared to QAM16 or QAM64 modulated sub-carriers. Both QAM16 and QAM64 require a PA backoff amount of at least 5 dB while BPSK and QPSK don't require any backoff. This means that BPSK or QPSK modulated OFDM is more power efficient.

AB - Real-world power amplifiers (PAs) are weakly nonlinear. The nonlinear behavior causes subcarrier intermodulation in OFDM based transmitters. This paper shows the results of simulations performed on a software HiperLAN/2 system with a nonlinear power amplifier model. We show that HiperLAN/2 is much less sensitive to nonlinearities of the PA when BPSK or QPSK modulated sub-carriers are used compared to QAM16 or QAM64 modulated sub-carriers. Both QAM16 and QAM64 require a PA backoff amount of at least 5 dB while BPSK and QPSK don't require any backoff. This means that BPSK or QPSK modulated OFDM is more power efficient.

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KW - IR-53728

KW - METIS-226915

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BT - The 2nd IEE/EURASIP Conference on DSPenabledRadio

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