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

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

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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Wireless and Microwave Technology, 2005. WAMICON 2005. The 2005 IEEE Annual Conference

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