Yang, Zheng and Ding, Zhiguo and Fan, Pingzhi and Ma, Zheng (2016) Outage performance for dynamic power allocation in hybrid non-orthogonal multiple access systems. IEEE Communications Letters, 20 (8). pp. 1695-1698. ISSN 1089-7798
Abstract
In this letter, we propose a novel dynamic power allocation scheme for hybrid non-orthogonal multiple access (DH-NOMA). The exact expressions for the outage probabilities and their asymptotic approximations at high signal-to-noise ratio are derived in DH-NOMA systems. Both Monte Carlo simulations and analytical results are used to compare the proposed scheme with the existing works, such as NOMA based on fixed power allocation (F-NOMA) and cognitive radio inspired NOMA (CR-NOMA). The provided results demonstrate that the DH-NOMA scheme can always achieve better outage performance than the traditional orthogonal multiple access, and achieve a more balanced tradeoff between the two user individual rates than F-NOMA and CR-NOMA.