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首页> 外文期刊>Journal of network and computer applications >A best block exploring algorithm for two-dimensional downlink burst construction in IEEE 802.16 networks
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A best block exploring algorithm for two-dimensional downlink burst construction in IEEE 802.16 networks

机译：IEEE 802.16网络中二维下行链路突发构建的最佳块探索算法

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摘要

Various burst construction algorithms for Orthogonal Frequency Division Multiple Access (OFDMA) were proposed. However, these algorithms did not consider the downlink burst characteristics that are specified in IEEE 802.16 standard. This work therefore presents the Best Block-Oriented (BBO) algorithm. BBO not only complies with the downlink burst characteristics, but also addresses three further issues that are important to obtain high throughput: BBO reduces external fragment by shrinking a burst to fit into the available bandwidth area if the available area is otherwise insufficient to accommodate it; BBO shrinks the burst area to minimize internal fragment if the requested bandwidth has been satisfied; to find the subchannels that have good channel quality, BBO evaluates the channel quality of subchannels and constructs the burst in the subchannels that provide the highest throughput. Simulation results show that BBO yields 1.2-9 times the throughput that has been achieved using previous algorithms under a heavy load.
机译：提出了用于正交频分多址（OFDMA）的各种突发构造算法。但是，这些算法未考虑IEEE 802.16标准中指定的下行链路突发特性。因此，这项工作提出了最佳面向块（BBO）的算法。 BBO不仅符合下行链路突发特性，而且还解决了三个对于获得高吞吐量至关重要的问题：BBO通过缩小突发以适合可用带宽区域来减少外部碎片（如果可用区域不足以容纳它）；如果满足了请求的带宽，BBO会缩小突发区域，以最大程度地减少内部碎片；为了找到具有良好信道质量的子信道，BBO会评估子信道的信道质量，并在提供最高吞吐量的子信道中构建突发。仿真结果表明，BBO产生的吞吐量是在重载下使用以前算法所获得的吞吐量的1.2-9倍。

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  • 来源
    《Journal of network and computer applications》 |2012年第6期|p.2092-2104|共13页
  • 作者

    Yuan-Cheng Lai; Yen-Hung Chen;

  • 作者单位

    Department of Information Management, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Rd., Taipei 106, Taiwan;

    Department of Information Management, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Rd., Taipei 106, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    IEEE 802.16; burst construction; downlink; OFDMA;

    机译：IEEE 802.16;爆破施工;下行链路OFDMA;

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