Exploiting RLL codes in visible light communication

Lu, Xuanxuan; Li, Tiffany Jing

doi:10.1109/iccchina.2016.7636890

Cited by 6 publications

(8 citation statements)

References 11 publications

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“…standard or at the least highly suggested, among others are [21,39,40]. However, in the case proposed, we consider the trellis-coded modulation (TCM) in conjunction with the corresponding MLSD on the receiver is being able to perform the same function.…”

Section: Design Of Signal Processmentioning

confidence: 99%

“…This has led to convolutional coding, which has been studied on several points for VLC. It has been employed to enhance OOK-based system in [21], and in [11] trellis-coded modulation was proposed in hybrid with color keying (CSK). Trellis-or Viterbi-based coding is also found in researches on fiber optic [22][23][24] and free space optic [25], specifically for signal detection.…”

Section: Introductionmentioning

confidence: 99%

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Performance of signal detection with trellis code for downlink non-orthogonal multiple access visible light communication

2022

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This paper examines the implementation of multi-level amplitude modulation enforced by trellis coding in a downlink non-orthogonal multiple access channel for visible light communication (VLC). The non-orthogonal transmission is applied using superposition coding and successive interference cancellation with the support of a trellis decoder. The VLC is addressed by a channel model according to Lambert. Two levels of maximum likelihood signal detection are observed and compared, each for corresponding 4 and 8 trellis-coded modulation (TCM). The power ratio allotment is examined to investigate the system performance in the bit error rate. The simulation showed that a threshold of power ratio is needed to ensure good performance of signal detection. Further simulation with successive detection had shown effective results for up to three users.

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Section: Design Of Signal Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance of signal detection with trellis code for downlink non-orthogonal multiple access visible light communication

2022

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“…However, both BMC and Miller do not provide perfect 50% dimming at the output for individual input bit. Authors in [9] have proposed the concept of super-symbol to evaluate the dimming percentage, rather than at the individual bit level. They have shown that if the super-symbol size is arbitrarily large, one can achieve perfect dimming of 50%.…”

Section: Rll Codes: Past Workmentioning

confidence: 99%

“…Other FEC codes proposed in literature include Reed-Muller (RM) codes [4], rate-compatible convolutional code [5], turbo codes [6], low density parity check (LDPC) codes [7], and polar codes [8]. A joint iterative decoding scheme using serial concatenation of FEC-RLL coding is also presented in [9]. LDPC with constant weight codes (CWC) [10], polar codes…”

Section: Introductionmentioning

confidence: 99%

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On Low Complexity RLL Code for Visible Light Communication

Jain,

Banerjee

2019

Preprint

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Run length limited (RLL) codes are used in visible light communication (VLC) to avoid flicker and to support different dimming ranges such that communication is not affected by the variation in light intensity. In this paper, we propose a low complexity split phase code as RLL code in serial concatenation with the convolutional code as a forward error correcting code (FEC) for VLC. The split phase code can be represented by a twostate trellis-like code which can provide an iterative gain in FEC-RLL serial concatenation. We also use the extrinsic information transfer (EXIT) chart to explain the iterative decoding behavior of the proposed serial concatenated scheme. Furthermore, we use puncturing and compensation symbols to support various dimming range in VLC.

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