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Performance analysis on the nonlinear distortion in OFCDM downlink system using clipped multilevel-PSK  

안치훈 (연세대학교 전기전자공학과)
최영관 (연세대학교 전기전자공학과)
장승훈 (연세대학교 전기전자공학과)
김동구 (연세대학교 전기전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.40, no.11, 2003 , pp. 17-26 More about this Journal
Abstract
To reduce the nonlinear distortion of high power amplifier(HPA) in down link OFCDM system to employ time domain spreading, we apply technology which transmits MPSK(Multilevel-PSK) signal after clipping on multilevel input signal of IFFT subcarrier. In case that the nonlinear distortion of HPA is considered in AWGN channel, performacne of clipping OFCDM system using extended m sequence is over 2.2㏈ better than that of OFCDM system using extended m sequence when the number of user is 8 and 16. In case that the nonlinear distortion of HPA is considered in quasi-static channel, performacne of clipping OFCDM system using extended m code is over 2㏈ better than that of OFCDM system using extended m sequence when the number of user is 8 and 16.
Keywords
OFDM; OFCDM; clipping; MPSK symbol; nonlinear distortion;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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