Abstract
In Visible Light Communications (VLC) with multiple transmitters sending information to multiple receivers simultaneously, the optical signals interfere due to the diffused light. The result is an Intensity-Modulation/Direct-Detection (IM/DD) Interference Channel (IC), whose capacity has not been investigated. The challenge in studying the capacity of the IM/DD IC is due to its non-negative inputs with mean optical power constraints on the one hand, and interference on the other hand. In this paper the capacity of the IM/DD IC is studied. Capacity inner and outer bounds are derived and evaluated. The inner bounds are based on treating interference as noise (TIN) and the Han-Kobayashi (HK) scheme. The outer bound is based on a Z-channel bound. The bounds are shown to coincide asymptotically at high signal-to-noise ratio (SNR) in the strong interference regime, leading to the characterization of the strong interference capacity at high SNR. The bounds are also compared numerically in the weak interference regime.
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.
