Title :
Digital nonlinearities compensation based on forward distortion information acquisition in channelized RF photonic links
Author :
Xiaojun Xie ; Yitang Dai ; Kun Xu ; Jian Niu ; Li Yan ; Ruixin Wang ; Yuefeng Ji ; Jintong Lin
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
A novel technique to suppress nonlinearities, including third-order intermodulation (IMD3) distortion and channel cross modulation (XM) distortion, in a channelized RF photonic link based on post digital signal processing and forward distortion information acquisition is proposed and demonstrated. The IMD3 and XM nonlinearity compensation function is obtained theoretically. Furthermore, we demonstrate the linearization technique using a polarization modulator. In experiment, the XM distortion and IMD3 distortion are suppressed simultaneously with about 25 dB and 19 dB, respectively.
Keywords :
compensation; intermodulation distortion; linearisation techniques; microwave photonics; optical distortion; optical modulation; polarisation; IMD3 distortion; XM distortion; channel cross modulation; channelized RF photonic link; digital nonlinearities compensation; forward distortion information acquisition; linearization technique; microwave photonics; nonlinearities suppression; polarization modulator; post digital signal processing; third-order intermodulation distortion; Amplitude modulation; Nonlinear distortion; Optical distortion; Photonics; Radio frequency; analog optical links; channelization; digital signal processing; microwave photonics; polarization modulator;
Conference_Titel :
Microwave Photonics (MWP), 2012 International Topical Meeting on
Conference_Location :
Noordwijk
Print_ISBN :
978-1-4673-2863-0
DOI :
10.1109/MWP.2012.6474061
