Chinese Optics Letters, 2020, 18 (6): 060602, Published Online: May. 15, 2020
Matching theory based user-grouping for indoor non-orthogonal multiple access visible light communication heterogeneous networks Download: 673次
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.
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.