Maximizing End-to-End Throughput of Interference-Limited Multihop Networks

Maximizing End-to-End Throughput of Interference-Limited Multihop Networks
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最大限度地提高干扰受限多跳网络的端到端吞吐量

DOI:
10.1109/tvt.2017.2772856
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发表时间:
2018-06
影响因子:
6.8
通讯作者:
Hu DL
Hu DL
中科院分区:
计算机科学2区
文献类型:
--
作者:
Hu Dali;Fan Pingzhi;Hu Dali;wu Jingxian;Hu DL

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本文研究了干扰受限环境下多跳网络的优化设计问题。我们的目标是确定最佳的操作参数,可以最大限度地提高网络中的多跳链路的端到端的吞吐量。最佳的设计是相对于两个参数,跳数,和信号干扰比(SIR)成功传输的阈值。在固定的总发射功率下,更多的跳数意味着每跳的距离更短,但也意味着每跳的功率更少和延迟更长。较高的SIR阈值可以通过采用高阶调制来实现较高的吞吐量,但代价是较高的中断概率。我们捕获这些权衡关系,推导出的吞吐量,这是表示为一个显式函数的系统参数。通过理论分析表明,吞吐量随跳数或SIR门限呈准凹性,并通过解析和仿真得到了使吞吐量最大化的最优设计参数。
The optimum designs of multihop networks operating in an interference-limited environment are studied in this paper. The objective is to identify the optimum operation parameters that can maximize the end-to-end throughput of a multihop link in the network. The optimum designs are performed with respect to two parameters, the number of hops, and the signal-to-interference ratio (SIR) threshold for successful transmission. Under a fixed total transmission power, more hops means shorter distance for each hop, but also less power per hop and longer delays. A higher SIR threshold can achieve a higher throughput by employing high-order modulations, but at the cost of a higher outage probability. We capture these tradeoff relationships by deriving the throughput, which is expressed as an explicit function of a number of system parameters. It is shown through theoretical analysis that the throughput is quasi-concave in the number of hops or the SIR threshold, and the optimum design parameters that can maximize the throughput are obtained analytically and verified through simulations.
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