搜索结果: 1-5 共查到“光学系统设计 O-OFDM Systems”相关记录5条 . 查询时间(0.125 秒)
Significant Overhead Reduction of Multi-band Tb/s Coherent Optical OFDM Systems
Multi-band Tb/s Coherent Optical OFDM Systems Overhead Reduction
2015/5/15
The timing and optical laser phase of individual bands in multi-band OFDM are correlated. We significantly reduce the OFDM overhead through using FFT window synchronization for channel estimation and ...
Subcarrier selection mitigates the need for suppression of one sideband at the transmitter side for Intensity Modulation/Direct Detection OFDM systems caused by group velocity dispersion of the fiber ...
Fiber Nonlinearity Mitigation by PAPR Reduction in Coherent Optical OFDM Systems via Active Constellation Extension
Fiber Nonlinearity PAPR Optical OFDM Systems Active Constellation Extension
2015/8/4
We consider Active Constellation Extension to reduce the PAPR in CO-OFDM systems. We find that the nonlinearity threshold is improved by 1.5 dB at a reach of 400 km SSMF fiber.
Improved Frequency Offset Correction in Coherent Optical OFDM Systems
Frequency Offset Correction Optical OFDM Systems
2015/7/30
We extended a pilot symbol frequency offset estimation scheme and applied it in combination with a pilot subcarrier compensator. Optimum system sensitivity was found up to few 100MHz frequency offset.
Measurement of Non Linear Thresholds in O-OFDM Systems with Respect to Data Pattern and Peak Power to Average Ratio
O-OFDM Systems Respect Peak Power Average Ratio
2015/7/30
We investigated the non linear threshold of a coherent O-OFDM system. An improvement for NLT of about 2.5dB was demonstrated either by reducing the data pattern length or clipping of the OFDM signal.