Multi-criteria ranking based greedy algorithm for physical resource block allocation in multi-carrier wireless communication systems

Multi-criteria ranking based greedy algorithm for physical resource block allocation in multi-carrier wireless communication systems
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多载波无线通信系统中基于多准则排序的贪心算法物理资源块分配

DOI:
10.1016/j.sigpro.2012.04.020
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发表时间:
2012
期刊:
影响因子:
4.4
通讯作者:
Nwamadi O
Nwamadi O
中科院分区:
工程技术2区
文献类型:
--
作者:
Nwamadi O

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针对多载波无线通信系统中物理资源块(PRB)分配问题,提出了一种基于多准则排序的贪婪(MCRG)算法。MCRG算法不仅在吞吐量和中断概率方面优于以前的基于单准则排序的贪婪算法,而且无论使用信道频率响应(CFR)或误码率(BER)还是吞吐量优化工具,都提供了接近最优的性能。特别地,当MCRG算法用于优化CFR效用时,整体计算复杂度保持在非常低的水平,而不牺牲性能。为了进一步降低整体计算复杂度,选择性比率被包括在MCRG算法中,其中贪婪PRB分配仅应用于具有较低多标准排名的用户的选择。
A computationally efficient algorithm, referred to as the multi-criteria ranking based greedy (MCRG) algorithm, is proposed for physical resource block (PRB) allocation in multi-carrier wireless communications systems, where the users' utilities are ranked with multiple criteria. The MCRG algorithm not only outperforms the previous single criterion ranking based greedy algorithm in terms of throughput and outage probability, but also provides a near optimal performance, irrespective of whether the channel frequency response (CFR) or bit error rate (BER) or throughput optimisation utilities are used. In particular, when the MCRG algorithm is used to optimise the CFR utility, the overall computational complexity is kept at a very low level, without sacrificing the performance. To further reduce the overall computational complexity, a selectivity ratio is included in the MCRG algorithm, where greedy PRB allocation is applied only to a selection of users with lower multi-criteria ranking.
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