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Preclipping experiment for subcarrier-multiplexed AM/64QAM optical transmission

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2 Author(s)
Tsushima, H. ; Hitachi Ltd., Totsuka ; Kitamura, K.

Bit-error-rate degradation of the 64QAM signal due to clipping distortion caused by overmodulation at the laser diode is compensated for by preclipping for subcarrier-multiplexed AM; 64QAM optical transmission. The worst composite distortions of CSO<-60 dBc and CTB<-65 dBc have been achieved in the 40-channel AM signal band. It has also been confirmed that preclipping is more effective than Reed-Solomon (204, 188) error correction against clipping distortion

Published in:

Electronics Letters  (Volume:31 ,  Issue: 21 )

Date of Publication:

12 Oct 1995

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