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

Zhengxi Chen; Zhitong Huang; Yuefeng Ji

doi:10.3788/COL202018.060602

Journals >Chinese Optics Letters >Volume 18 >Issue 6 >Page 060602 > Article

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

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DOI: 10.3788/COL202018.060602 Cite this Article Set citation alerts

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 Copy Citation Text

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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.

Keywords

matching theory non-orthogonal multiple access user grouping visible light communication