NDLI: Front-end non-linear distortion and array beamforming

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2015 IEEE Radio and Wireless Symposium (RWS)

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Front-end non-linear distortion and array beamforming

Content Provider	IEEE Xplore Digital Library
Author	Rabinkin, D. Song, W.
Copyright Year	2015
Description	Author affiliation: MIT Lincoln Lab., Lexington, MA, USA (Rabinkin, D.; Song, W.)
Abstract	Nonlinear distortion in RF front-end electronics can limit processing gain of digitized signals. Sensor array processing imparts spatial selectivity in capturing desired weak signals in the presence of interfering sources and spatially distributed noise. In this paper we examine the impact of non-linear distortion associated with realizable array systems on array beamforming algorithm performance that is referenced to perfectly linear systems. We show that for unfavorable system configurations nonlinear distortion can limit the gain that an array may impart in capturing weak signals, and can deny an array look directions that its ideal counterpart would otherwise capture. We use these results to motivate digital-domain non-linearity equalization.
Starting Page	35
Ending Page	37
File Size	213506
Page Count	3
File Format	PDF
ISBN	9781479955077
DOI	10.1109/RWS.2015.7129730
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Arrays Nonlinear distortion Interference Receivers Noise Delays Non-linear equalization Non-linear distortion Array processing
Content Type	Text
Resource Type	Article

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