title: PMD tolerant direct-detection polarization division multiplexed OFDM systems with MIMO processing.
abstract: This work proposes a novel direct-detection polarization division multiplexed OFDM scheme without the need of dynamic polarization control at a polarization-diverse receiver, and the proposed scheme is robust against polarization mode dispersion. Setting the frequency difference between two polarization-orthogonal reference carriers as one subcarrier spacing, possible signal fading can be avoided, and the corresponding interference from adjacent subcarriers is eliminated by a novel MIMO algorithm. The penalty caused by high channel matrix condition number can be decreased by inserting empty tones among subcarriers, and the polarization-dependent OSNR penalty at the BER of 10⁻³ is <3.6 dB with an empty tone inserted every 8 subcarriers. Moreover, the numerical results demonstrate the 16 × 10³-ps/nm chromatic dispersion and the 300-ps differential group delay will not induce additional penalty.
authors.affiliation: Department of Photonics, National Sun Yat-sen University, Kaohsiung, Taiwan. ccwei@mail.nsysu.edu.tw
authors.forename: Chia-Chien
authors.initials: CC
authors.lastname: Wei
authors.forename: Chun-Ting
authors.initials: CT
authors.lastname: Lin
authors.forename: Chih-Yun
authors.initials: CY
authors.lastname: Wang
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D013685:Telecommunications / Q000295:instrumentation*