Abstract
This paper analyzes the performances of indoor optical wireless data transmissions based on unipolar orthogonal frequency division multiplexing (OFDM). In particular, it is shown that using frequency-domain pre-equalization can provide benefits in terms of the reduction in the required optical transmit power for a given desired bit error rate (BER) from uncoded transmissions. Known for its power efficiency, asymmetrically clipped optical OFDM (ACO-OFDM) is considered as a unipolar modulation scheme for intensity modulation with direct detection (IM/DD). In addition, flip-OFDM is also considered as an alternative unipolar modulation scheme which is known to be as power efficient as ACO-OFDM. For both ACO-OFDM and flip-OFDM, analytical and simulation results show that using pre-equalization can save up to 2 dB of transmit optical power for a typical indoor optical wireless transmission scenario with the bit rate of 10 Mbps and the BER target of 10-5.
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.
