NDLI: On the effects of memoryless nonlinearities on M-QAM and DQPSK OFDM signals

Content Provider	IEEE Xplore Digital Library
Author	Chorti, A. Brookes, M.
Copyright Year	1963
Abstract	In the design of RF up-conversion and down-conversion communication links, an issue of special interest is presented by the nonlinear characteristic of analog devices. In this paper, we deal with the effect of memoryless nonlinear distortion on orthogonal frequency-division multiplexing (OFDM) transceivers. We tackle the issue of calculation of the number of intermodulation products with methods from combinatorics theory and derive closed-form expressions for the signal-to-noise ratio (SNR). We deal with third-order nonlinearities alone though the methodology used can be extended to cover higher order nonlinear phenomena. We then proceed to deriving SNR expressions in the presence of a high adjacent channel of the same service and predict the generation of in-band tonal interference. Finally, we generalize to the case of a multichannel OFDM transceiver. In each case, bit-error-rate estimations for differential quadrature phase-shift keying and symbol-error-rate estimations for M-quadrature amplitude-modulation constellations are presented and a mapping between circuit characteristics and OFDM performance is outlined
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	3301
Ending Page	3315
Page Count	15
File Size	896504
File Format	PDF
ISSN	00189480
Volume Number	54
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Transceivers Amplitude estimation Phase estimation Radio frequency Nonlinear distortion Frequency division multiplexing Combinatorial mathematics Closed-form solution Signal to noise ratio symbol error rate (SER) Adjacent channel bit error rate (BER) combinatorics digital audio broadcasting (DAB) digital video broadcasting (DVB) discrete multitone (DMT) intermodulation multicarrier system nonlinearity orthogonal frequency-division multiplexing (OFDM) RF circuits signal-to-noise ratio (SNR)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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