Direct-Detection PDM-OFDM RoF System for 60-GHz 2×2 MIMO Wireless Transmission Without Polarization Tracking.

Autor: Huang, Hou-Tzu, Sun, Chung-Shin, Lin, Chun-Ting, Wei, Chia-Chien, Zeng, Wei-Siang, Chang, Hsi-Yu, Shih, Boris, Ng'oma, Anthony
Zdroj: Journal of Lightwave Technology; 9/1/2018, Vol. 36 Issue 17, p3739-3745, 7p
Abstrakt: This work experimentally demonstrates a 60-GHz direct-detection polarization division multiplexing and orthogonal frequency division multiplexing (PDM-OFDM) system that does not require polarization tracking. The frequency offset of un-modulated optical carriers and a novel training symbol design enable the estimation of optical polarization mixing and wireless multi-input-multi-output (MIMO) channels for signal demodulation. We also adopted an empty subcarrier to mediate noise enhancement. Simulation and experiment results both demonstrate the feasibility of this approach. With pre-compensation, we achieved a BER of 1 × 10−3 under all polarization states over 10-km fiber and 3-m wireless MIMO transmission. The maximal allowable transmission data rate of up to 52 Gb at the worst case of states of polarization can be achieved. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index