title: Blind equalization for dual-polarization two-subcarrier coherent QPSK-OFDM signals.
abstract: Dual-polarization two-subcarrier coherent optical orthogonal frequency division multiplexing (CO-OFDM) transmission and reception is successfully demonstrated with blind equalization. A two-subcarrier quadrature phase shift keyed OFDM (QPSK-OFDM) signal can be equalized as a 9-ary quadrature amplitude modulation signal in the time domain with the cascaded multimodulus algorithm equalization method. The nonlinear effect resistance and transmission distance can be enhanced compared with the traditional CO-OFDM transmission system based on frequency equalization with training sequence.
authors.forename: Fan
authors.initials: F
authors.lastname: Li
authors.forename: Junwen
authors.initials: J
authors.lastname: Zhang
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yu
authors.forename: Xinying
authors.initials: X
authors.lastname: Li