正交频分多址系统中一种面向多业务应用的自适应资源分配算法

朱晓荣; 罗小琴; 朱洪波

doi:10.11999/JEIT141158

正交频分多址系统中一种面向多业务应用的自适应资源分配算法

doi: 10.11999/JEIT141158

2.
(南京邮电大学通信与信息工程学院南京 210003)

基金项目:

国家自然科学基金(61372125)，国家973计划项目(2013CB329104)和东南大学移动通信国家重点实验室开放研究基金(2013D01)资助课题

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出版历程
- 收稿日期: 2014-09-04
- 修回日期: 2014-11-18
- 刊出日期: 2015-06-19

Adaptive Resource Allocation Scheduling Algorithm for Multi-service Application in OFDMA System

2.
(College of Telecommunications &

摘要

摘要: 针对正交频分多址(OFDMA)系统下行链路多业务自适应调度的问题，该文首先以最大化系统吞吐量为优化目标、每种业务的服务质量(QoS)保证为约束条件，建立了一种通用的多业务自适应资源分配模型。为解决此优化问题，提出了一种具体的自适应资源调度算法。该算法对实时业务按照用户选择最好的信道的原则分配尽可能少的资源以保证其QoS，对非实时业务把尽可能多的剩余资源按照信道选择最好的用户的原则进行分配，充分利用信道资源，提升系统容量。仿真结果表明，该算法保证了下行OFDMA系统吞吐量的同时，在实时业务的延时和丢包率等方面有一定的优越性。
- 无线通信 /
- 资源分配 /
- 调度 /
- 有效容量 /
- 正交频分多址
Abstract: Aimed at the problem of downlink multiservice adaptive scheduling in Orthogonal Frequency-Division Multiple Access (OFDMA) system, a universal model for multiservice adaptive resource allocation is built, which is to maximize system throughput, under the constraints of Quality of Service (QoS) guarantees. In order to resolve this optimization problem, a multiservice adaptive resource scheduling algorithm is proposed. In this algorithm, the real-time service is allocated as little resource as possible to guarantee its QoS by the user choosing the best channel whereas the non-real time service is allocated the residual resource by the channel choosing the best user to increase the system capacity. The simulation results show that the proposed algorithm can guarantee the throughputs of the downlink OFDMA systems and meanwhile have some advantages in aspects of delay and packet dropping rate of real-time services.
- Wireless communication /
- Resource allocation /
- Scheduling /
- Effective capacity /
- OFDMA

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参考文献(14)

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