Optical Index-Coded Space Shift Keying (IC/SSK)

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2021

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Institute of Electrical and Electronics Engineers Inc

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In this letter, a new channel coding technique is proposed for optical spatial shift keying (SSK)-based visible light communications (VLC) systems by introducing redundancy in the spatial domain. The information is encoded by the redundant indices of the light emitting diodes (LEDs), assuming full channel state information (CSI) at the transmitter. The efficient construction of index-coding (IC) is presented with low computational complexity. Depending on the number of LEDs and the PDs as well as the amount of redundancy, it is concluded that IC/SSK achieves excellent coding gains at full rate and given target bit error rate (BER), as contrasted to the conventional channel coding in bit-domain, and yields superior BER performance in the presence of the VLC blockage channels as compared to the uncoded SSK systems.

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blockage channels, index-coding (IC), Optical wireless communications (OWC), space shift keying (SSK), visible light communications (VLC)

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