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提出了一种认知单载波频分复用接入(SC-FDMA)系统中的上行资源分配策略,通过定义新的边际效用函数,进行联合的资源块与功率分配.仿真结果表明,相比于已有上行资源分配策略,所提算法一方面可以以轻微的网络吞吐率损失为代价,实现资源块连续性分配,并很好地保护用户最小传输速率约束;另一方面,也可以有效规避对主网络的干扰,保证主网络正常通信.
An uplink resource allocation strategy in cognitive single-carrier frequency division multiple access (SC-FDMA) system is proposed, and a new marginal utility function is defined to perform joint resource block and power allocation. The simulation results show that, In the existing uplink resource allocation strategy, the proposed algorithm not only achieves resource block continuity allocation at the expense of slight loss of network throughput on the one hand, but also protects the user minimum transmission rate constraint well; on the other hand, it can also effectively avoid The main network interference, to ensure the normal communication of the main network.