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Hierarchical colour-shift-keying aided layered video streaming for the visible light downlink

Hierarchical colour-shift-keying aided layered video streaming for the visible light downlink
Hierarchical colour-shift-keying aided layered video streaming for the visible light downlink
Colour-shift keying (CSK) constitutes an important modulation scheme conceived for the visible light communications (VLC). The signal constellation of CSK relies on three different-color light sources invoked for information transmission. The CSK constellation has been optimized for minimizing the bit error rate, but no effort has been invested in investigating the feasibility of CSK aided unequal error protection (UEP) schemes conceived for video sources. Hence, in this treatise, we conceive a hierarchical CSK (HCSK) modulation scheme based on the traditional CSK, which is capable of generating interdependent layers of signals having different error probability, which can be readily reconfigured by changing its parameters. Furthermore, we conceived an HCSK design example for transmitting scalable video sources with the aid of a recursive systematic convolutional (RSC) code. An optimization method is conceived for enhancing the UEP and for improving the quality of the received video. Our simulation results show that the proposed optimized-UEP 16-HCSK-RSC system outperforms the traditional equal error protection scheme by ~ 1.7 dB of optical SNR at a peak signal-to-noise ratio of 37 dB, while optical SNR savings of up to 6.5 dB are attained at a lower PSNR of 36 dB.
3127-3152
Zhu, Chuan
68faec7d-dfe8-42a6-ab1d-4ea51ce050b4
Huo, Yongkai
12ef7050-42c0-4660-9776-66ce675fb1ab
Jiang, Junyi
0a4e01a5-c9d1-4031-8a31-5d6d8e63fa06
Sun, Hua
2e2bad09-8ba9-4d9b-afa8-2a6a290eeaa2
Dong, Chen
dac9f067-33fb-47a2-b789-b3d131d8d866
Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhu, Chuan
68faec7d-dfe8-42a6-ab1d-4ea51ce050b4
Huo, Yongkai
12ef7050-42c0-4660-9776-66ce675fb1ab
Jiang, Junyi
0a4e01a5-c9d1-4031-8a31-5d6d8e63fa06
Sun, Hua
2e2bad09-8ba9-4d9b-afa8-2a6a290eeaa2
Dong, Chen
dac9f067-33fb-47a2-b789-b3d131d8d866
Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zhu, Chuan, Huo, Yongkai, Jiang, Junyi, Sun, Hua, Dong, Chen, Zhang, Rong and Hanzo, Lajos (2016) Hierarchical colour-shift-keying aided layered video streaming for the visible light downlink. IEEE Access, 4, 3127-3152. (doi:10.1109/ACCESS.2016.2574978).

Record type: Article

Abstract

Colour-shift keying (CSK) constitutes an important modulation scheme conceived for the visible light communications (VLC). The signal constellation of CSK relies on three different-color light sources invoked for information transmission. The CSK constellation has been optimized for minimizing the bit error rate, but no effort has been invested in investigating the feasibility of CSK aided unequal error protection (UEP) schemes conceived for video sources. Hence, in this treatise, we conceive a hierarchical CSK (HCSK) modulation scheme based on the traditional CSK, which is capable of generating interdependent layers of signals having different error probability, which can be readily reconfigured by changing its parameters. Furthermore, we conceived an HCSK design example for transmitting scalable video sources with the aid of a recursive systematic convolutional (RSC) code. An optimization method is conceived for enhancing the UEP and for improving the quality of the received video. Our simulation results show that the proposed optimized-UEP 16-HCSK-RSC system outperforms the traditional equal error protection scheme by ~ 1.7 dB of optical SNR at a peak signal-to-noise ratio of 37 dB, while optical SNR savings of up to 6.5 dB are attained at a lower PSNR of 36 dB.

Text Optimal_SVC_TCM_HMCSK_2col.pdf - Accepted Manuscript
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Submitted date: January 2016
Accepted/In Press date: 18 May 2016
e-pub ahead of print date: 1 June 2016
Published date: 7 July 2016
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 387102
URI: https://eprints.soton.ac.uk/id/eprint/387102
PURE UUID: 4d130b91-44cc-4acc-84cd-b0f9ddf69e64
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 09 Feb 2016 14:22
Last modified: 09 Jan 2018 18:15

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Contributors

Author: Chuan Zhu
Author: Yongkai Huo
Author: Junyi Jiang
Author: Hua Sun
Author: Chen Dong
Author: Rong Zhang
Author: Lajos Hanzo ORCID iD

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