Title :
Preclipping AM/QAM hybrid lightwave systems with bandstop filtering
Author :
Pan, Qi ; Green, Roger J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bradford Univ., UK
Abstract :
A novel approach using bandstop filtering and preclipping is presented that can greatly reduce the BER degradation due to clipping noise in AM/QAM hybrid lightwave systems. It is shown that the recurrence of the signal tips by the lowpass filter of previous preclipping systems can be largely suppressed, resulting in much lower actual clipping noise.
Keywords :
amplitude modulation; band-stop filters; error correction codes; optical fibre communication; optical fibre filters; optical noise; quadrature amplitude modulation; visual communication; BER degradation; bandstop filtering; lower actual clipping noise; lowpass filter; preclipping AM/QAM hybrid lightwave systems; signal tips; Bit error rate; Degradation; Digital filters; Diode lasers; Filtering; Low pass filters; Noise reduction; Optical filters; Optical modulation; Quadrature amplitude modulation;
Journal_Title :
Photonics Technology Letters, IEEE
