面向上行OFDMA系统的无线资源分配算法

Juncai Shi, A. Hu
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引用次数: 7

摘要

研究了上行OFDMA系统的无线资源分配方案,提出了一种基于系统吞吐量最大化和用户服务质量(QoS)约束的上行OFDMA系统无线资源分配算法。URRA算法由两部分组成。第一部分根据上行通道状态信息(UCSI)、QoS约束和数据缓冲区信息,为每个用户动态引入优先级参数,然后根据优先级参数分配资源以满足用户的QoS约束。URRA算法的第二部分将剩余的子载波分配给吞吐量增量最大的用户。仿真结果表明,与现有算法相比,URRA算法不仅在QoS约束下提高了系统吞吐量性能,而且显著降低了计算复杂度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Radio Resource Allocation Algorithm for the Uplink OFDMA System
This paper investigates the radio resource allocation scheme for the uplink OFDMA systems and a new uplink-based radio resource allocation (URRA) algorithm is proposed based on the maximization of system throughput and the quality of service (QoS) constraints of the users. The URRA algorithm is composed of two parts. The first part introduces a dynamically priority parameter for each user according to the uplink channel state information (UCSI), the QoS constraints and data buffer information, and then allocates resources to meet the user's QoS constraints based on the priority parameters. The second part of the URRA algorithm allocates the remaining subcarriers to the users who have the most increment of throughput. Simulation results show that the URRA algorithm not only increases the system throughput performance subject to the QoS constraints, but also significantly reduces the computational complexity compared with the existing algorithm.
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