Abstract
The wavelength division multiplexing radio over fiber (WDM-RoF) system is designed to provide broadband and high throughput services, but sensitive to the nonlinear distortion. This paper studies the nonlinear model with rate equations and multiple dimension behavior, and the corresponding digital linearization algorithms. The multi dimension parallel Hammer-stain (MD-PH) algorithm considers not only the nonlinearity of each path but also the intermodulation and interchannel crosstalk, which provides better performance than crosstalk memory polynomial (CO-MPM) algorithm. By means of VPI photonics design suite, a 4-WDM-RoF system and corresponding algorithms are verified. The simulation results demonstrate that the MD-PH algorithm outperforms the CO-MPM one in terms of the adjacent channel power ratio (ACPR) and the normalized mean square error (NMSE).
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