Theoretical Analysis on Bit Error Rate of Visible-Light Variable N-Parallel Code-Shift-Keying

Keisuke OSAWA  Hiromasa HABUCHI  Yusuke KOZAWA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E101-A   No.12   pp.2352-2358
Publication Date: 2018/12/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E101.A.2352
Type of Manuscript: Special Section PAPER (Special Section on Signal Design and Its Applications in Communications)
Category: Communication Theory and Signals
lighting constrained visible-light communications,  light emitting diode,  code-shift-keying,  modified prime sequence code,  dimming control,  

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Lighting constrained visible-light communications are expected as indoor communications of next generation. In lighting constrained visible-light communications, lighting devices are used not only for illuminating rooms but also for optical wireless communications. For lighting constrained visible-light communications, we have been proposed a variable N-parallel code-shift-keying (VN-CSK) using a modified prime sequence code (MPSC). The VN-CSK system using MPSC has not only a suppression function for reducing co-channel interference from neighboring lighting devices, but also a function for keeping constant data transmission regardless of dimming control. In this paper, the bit error rate (BER) of the VN-CSK system using MPSC is derived under an indoor visible-light communication channel by theoretical analysis. Moreover, we evaluate the BER performance for the brightness level (dimming control stage).