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Intensity modulation and direct detection (IM/DD) is the most commonly applied scheme in optical wireless communication systems. There is no exact channel capacity expression for optical wireless communication systems in IM/DD additive white Gaussian noise (AWGN) channels, but capacity bounds exist. In this letter, channel capacity for optical wireless communications in the IM/DD AWGN channel is analyzed...
This paper presents a novel position based access scheme for indoor optical wireless communication systems. In this scheme, we apply the Intensity Modulation-Direct Detection (IM/DD) with Quadrature Phase Shift Keying (QPSK) modulation. The I (in-phase) and Q (Quadrature) signal are transmitted separately in Additive White Gaussian Noise (AWGN) channel. The probability of error is analyzed with consideration...
The concatenation of marker and Reed-Solomon codes in order to correct insertion/ deletion errors in differential pulse-position modulation (DPPM) over optical wireless communications is presented. The concatenated code decoding algorithms with hard-decision and soft-decision detection are presented. The performance of the hard-decision coded DPPM system is evaluated over both nondispersive and dispersive...
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