Non-Orthogonal Multiple Access (NOMA) has been proposed as a new radio access technique for cellular networks as an alternative to OMA (Orthogonal Multiple Access) in which the users of a group (pairs or triples of users in a group are considered in this paper) are allowed to use the wireless channel simultaneously. In this paper, for downlink single-input single-output SISO-NOMA, a heuristic power allocation algorithm within a group is first proposed which attempts to ensure that the users of a group benefit from simultaneous transmission equally in terms of achievable throughput. Moreover, a user group scheduling algorithm is proposed for downlink NOMA systems by which a user group is to be dynamically selected for transmission while satisfying long term temporal fairness among the individual contending users. The effectiveness of the proposed power allocation method along with the temporal fair scheduling algorithm for downlink NOMA is validated with simulations and the performance impact of the transmit power and the coverage radius of the base station as well as the number of users are thoroughly studied.

非正交多址接入（NOMA）已被提出作为蜂窝网络的一种新的无线接入技术，作为OMA（正交多址接入）的替代方案，其中考虑了一个组的用户（一个组中的用户对或三对用户）。纸张）允许同时使用无线通道。在本文中，对于下行链路单输入单输出SISO-NOMA，首先提出了一种在组内的启发式功率分配算法，该算法试图确保组的用户就可实现的吞吐量而言平等地受益于同时传输。此外，提出了用于下行链路NOMA系统的用户组调度算法，通过该算法可以动态地选择用户组进行传输，同时满足各个竞争用户之间的长期时间公平性。