TY - GEN
T1 - Power Allocation Techniques for Non-orthogonal Multiple Access Based MIMO Visible Light Communication Systems
AU - Ibrahim, Hesham Sadat
AU - Abaza, Mohamed
AU - Mansour, Ali
AU - Alfalou, Ayman
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - Visible light communication (VLC) is a promising solution for indoor wireless connectivity but its capacity is hindered owing to the light-emitting diodes (LEDs) bandwidth limitation. In this paper, a non-orthogonal multiple access (NOMA) scheme is applied with a multiple-input multiple-output (MIMO) technique for enhancing the achievable rate of VLC systems. As the NOMA performance is extremely affected by the power allocation technique, we evaluate, in an indoor 2x2 MIMO-VLC system based on the NOMA scheme, the performance of three efficient and low-complexity power allocation schemes: fixed power allocation (FPA), gain ratio power allocation (GRPA), normalized gain difference power allocation (NGDPA). According to the results we obtained, the system's best achievable rate was achieved using the FPA with a power allocation factor of 0.9. Moreover, the superiority of FPA over NGDPA and GRPA is clearly highlighted through our simulation results in a two-user case scenario with a sum rate enhancement of 3.7% and 18.7%, respectively.
AB - Visible light communication (VLC) is a promising solution for indoor wireless connectivity but its capacity is hindered owing to the light-emitting diodes (LEDs) bandwidth limitation. In this paper, a non-orthogonal multiple access (NOMA) scheme is applied with a multiple-input multiple-output (MIMO) technique for enhancing the achievable rate of VLC systems. As the NOMA performance is extremely affected by the power allocation technique, we evaluate, in an indoor 2x2 MIMO-VLC system based on the NOMA scheme, the performance of three efficient and low-complexity power allocation schemes: fixed power allocation (FPA), gain ratio power allocation (GRPA), normalized gain difference power allocation (NGDPA). According to the results we obtained, the system's best achievable rate was achieved using the FPA with a power allocation factor of 0.9. Moreover, the superiority of FPA over NGDPA and GRPA is clearly highlighted through our simulation results in a two-user case scenario with a sum rate enhancement of 3.7% and 18.7%, respectively.
KW - multiple-input multiple-output (MIMO)
KW - non-orthogonal multiple access (NOMA)
KW - power allocation techniques
KW - visible light communication (VLC).
UR - https://www.scopus.com/pages/publications/85174696558
U2 - 10.1109/ICSIP57908.2023.10270852
DO - 10.1109/ICSIP57908.2023.10270852
M3 - Conference contribution
AN - SCOPUS:85174696558
T3 - 2023 8th International Conference on Signal and Image Processing, ICSIP 2023
SP - 930
EP - 934
BT - 2023 8th International Conference on Signal and Image Processing, ICSIP 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Signal and Image Processing, ICSIP 2023
Y2 - 8 July 2023 through 10 July 2023
ER -