Abstract
Hybrid multichannel AM/QAM subcarrier multiplexed (SCM) lightwave systems are attractive for mixed analog/digital video-data transport over hybrid fiber/coax (HFC) networks. In this paper we show that significant bit-error-rate (BER) improvements can be obtained using AM/OFDM (orthogonal frequency division multiplexing) vis-a-vis AM/QAM, when corrupted by both clipping-impulse and Gaussian noise. It is shown that the clipping effect on the BER of an OFDM signal can be negligible for a large range of laser optical modulation depths, and therefore, virtually no limit is imposed on the channel capacity. It is further shown that OFDM introduces little effect on the analog AM channels, as opposed to use of QAM systems.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
