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  • Received: Dec. 6, 2019

    Accepted: Mar. 1, 2020

    Posted: May. 12, 2020

    Published Online: May. 15, 2020

    The Author Email: Zhitong Huang (hzt@bupt.edu.cn)

    DOI: 10.3788/COL202018.060602

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    Zhengxi Chen, Zhitong Huang, Yuefeng Ji. Matching theory based user-grouping for indoor non-orthogonal multiple access visible light communication heterogeneous networks[J]. Chinese Optics Letters, 2020, 18(6): 060602

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Chinese Optics Letters, Vol. 18, Issue 6, 060602 (2020)

Matching theory based user-grouping for indoor non-orthogonal multiple access visible light communication heterogeneous networks

Zhengxi Chen, Zhitong Huang*, and Yuefeng Ji

Author Affiliations

  • State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Abstract

This Letter proposes a model of indoor visible light communication (VLC) heterogeneous networks entirely based on LEDs with different specifications and applies non-orthogonal multiple access (NOMA) to it because of the narrow modulation bandwidth of LEDs. Moreover, a user-grouping scheme that is based on matching theory is proposed to improve the network achievable sum rate. Simulation results indicate that when each NOMA cluster contains 6 users, the proposed scheme has a 49.54% sum-rate enhancement compared with the traditional user-grouping scheme. As the number of users in each NOMA cluster increases, the proposed scheme performs better at the cost of computational complexity.

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