Title :
Memory polynomial based adaptive predistortion for Radio over Fiber systems
Author :
Cao, Gang ; Xu, Tiefeng ; Liu, Taijun ; Ye, Yan ; Lin, Hao ; Luo, Xiaojun ; Li, Liang
Author_Institution :
Coll. of Inf. Sci. & Eng., Ningbo Univ., Ningbo, China
Abstract :
In this paper, a measurement apparatus based Radio-over-Fiber system prototype, including a Vector Signal Generator (VSG), a semiconductor laser, a photodetector and a spectrum analyzer, is build to study the nonlinear effects of the RoF system, which is widely regarded as a promising technique for microcell applications of the future wireless networks. The memory polynomial nonlinear model is utilized to compensate the nonlinearities in the RoF system. A three carrier Wideband Code Division Multiple Access(WCDMA) signal is applied to this test platform. The experimental results illustrate that the predistorter can improve the Adjacent Channel Power Ratio (ACPR) more than 10-dB.
Keywords :
code division multiple access; microcellular radio; optical communication equipment; photodetectors; radio-over-fibre; semiconductor lasers; signal generators; spectral analysers; wireless channels; RoF system; Vector Signal Generator; WCDMA signal; adjacent channel power ratio; memory polynomial based adaptive predistortion; memory polynomial nonlinear model; microcell applications; photodetector; predistorter; radio over fiber system; semiconductor laser; spectrum analyzer; wideband code division multiple access; wireless networks; Fiber nonlinear optics; Optical fiber networks; Optical fibers; Polynomials; Predistortion; Wireless communication;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230047
