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Nonlinearity estimation and spectral regrowth prediction of power amplifiers using correlation techniques

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4 Author(s)
M. Y. Li ; California Univ., San Diego, La Jolla, CA, USA ; I. Galton ; L. E. Larson ; P. M. Asbeck

Nonlinearity estimation and spectral regrowth prediction are crucial to power amplifier linearization. The correlation techniques shown here can estimate amplifier nonlinearity and predict out-of-band power spectrum. Cross-correlation is performed between the output envelope and a test sequence generated from the input signal and can be carried out in background during amplifier operations. The proposed method is applicable to multi-channel DS-CDMA systems and IS-95 forward-link CDMA signals are employed as an example.

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The 2005 IEEE Annual Conference Wireless and Micrwave Technology, 2005.

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