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Using precoding technique to reduce the BER penalty of an M-QAM channel in hybrid AM-VSB/M-QAM subcarrier multiplexed lightwave systems

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3 Author(s)
Pi-Yang Chiang ; Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Cherng-Chui Hsiao ; Way, W.I.

We propose and verify through computer simulations the use of a precoding technique to eliminate the nonlinear distortions in an M-QAM channel, which is transported along with multiple AM-VSB channels by a laser diode. We show that the precoding technique can completely remove the clipping-induced bit-error-rate (BER) floor at a cost of a 3-dB signal-to-noise ratio reduction.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 8 )