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On the nonlinear distortion of QPSK‐based digital modulation signals in microwave MESFET amplifiers
Author(s) -
Huang ChienChang
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/1098-2760(20010205)28:3<212::aid-mop19>3.0.co;2-3
Subject(s) - volterra series , mesfet , amplifier , electronic engineering , phase shift keying , nonlinear distortion , modulation (music) , microwave , distortion (music) , predistortion , engineering , electrical engineering , nonlinear system , computer science , physics , channel (broadcasting) , bit error rate , telecommunications , acoustics , voltage , transistor , cmos , quantum mechanics , field effect transistor
QPSK‐based digital modulation signal impairments in microwave MESFET amplifiers are analyzed by using the Volterra series method under weakly nonlinear conditions. The signal quality expressions, including the error vector magnitude (EVM), the adjacent channel power ratio (ACPR), and the eye diagram for a π/4‐DQPSK system, are evaluated. This information is quite important for amplifier design and system integration in digital wireless communications. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 28: 212–214, 2001.