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Mode division multiplexed(MDM) in few mode fibers has gained attraction due to its potential to achieve ultrahigh capacity beyond the nonlinear Shannon limit of the single mode fiber. However, it cannot be ignored that the effect of crosstalk, mode coupling and differential mode group delay on optical signals exists in transmission and equalizing these impairments are required in the digital signal...
We propose a new method to reduce peak to average power ratio (PAPR) in CO-OFDM system by applying chicken swarm optimization (CSO) algorithm to optimize the initial phase of the subcarriers. Stimulation result shows that PAPR of CSO optimized signal is reduced by 5.5dB and 1.5dB compared with that of original signal and particle swarm optimization (PSO) optimized signal and BER performance is improved.
Self-Phase Modulation (SPM) can not be ignored in single light source OFDM system, so it is necessary to overcome the influence of SPM. A joint equalization solution to optical OFDM system based on orthogonal wavelet transform is proposed in this paper. In this method, block pilots are periodically inserted into the frame of OFDM signals. At receiver, the phase rotations of pilots are extracted to...
We analyzed the performance of DFE in PMD-limited 40 GB/s Optical links by using Matlab/Simulink. We also provided a description of the equalizer circuit design, and described the results of circuit simulations; it is found that a DFE consisting of a 3-tap FFE and a 2-tap FBE could compensate PMD.
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