In this paper, we investigate the subcarriers combination selection and the subcarriers activation of OFDM-IM system. Firstly, we propose an algorithm to solve the problem of subcarriers combination selection based on the transmission rate and diversity gain. Secondly, we ropose a more concise algorithm to solve the problem of power allocation and carrier combination activation probability under this combination to improve system capacity. Finally, we verify the robustness of the algorithm and the superiority of the system scheme in the block error rate (BLER) and system capacity by numerical results.
Bibliographical noteKAUST Repository Item: Exported on 2021-01-06
Acknowledgements: This work was supported in part by the NSF of China #61661005 and # 61761007 and # 61761006, and the NSF of Guangxi # 2018GXNSFAA138079 and # 2017GXNSFAA198276.