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Channel Estimation Using Superimposed Training for Coherent Optical OFDM Systems
Channel Estimation Superimposed Training Optical OFDM Systems
2013/12/2
We demonstrate by simulation that the superimposed training based channel estimation scheme can achieve similar performance as compared with conventional schemes, without any loss in bandwidth. An ite...
Characterization and Monitoring of Laser Linewidths in Coherent Optical OFDM Systems
Fiber optics communications Modulation
2011/5/26
We demonstrate monitoring of digitally-generated laser linewidths for 107-Gb/s coherent optical OFDM systems. Unique characteristics of time-domain phase-error variance are exploited to extract laser ...
Experimental Study of Polarization-Switched-QPSK Subcarrier Modulation and Iterative Demapping on Optical OFDM Systems
multiplex achieved OCIS codes
2011/5/21
We demonstrate application of polarization-switched-QPSK subcarrier modulation together with soft-FEC LDPC coding and iterative demapping on OFDM lab system. 4.5dB OSNR-sensitivity improvement versus ...
Reducing Cyclic Prefix Overhead in Optical OFDM Systems
Reducing Cyclic Prefix Overhead Optical OFDM Systems
2009/7/14
Simulations show that by pre-compensating for dispersion, using bands transmitted with timing offsets and a single-band receiver, the cyclic prefix to be reduced in optical OFDM systems without compro...