A measurement based evaluation of feedback-less MTC using FBMC-OQAM
A measurement based evaluation of feedback-less MTC using FBMC-OQAM
复制标题
使用 FBMC-OQAM 对无反馈 MTC 进行基于测量的评估
DOI：
10.1109/iswcs.2016.7600964
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
J. Peissig
中科院分区：
文献类型：
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作者：
Maxim Penner;Martin Fuhrwerk;J. Peissig
大规模机器类型通信（MTC）是当前和未来蜂窝移动的通信系统（如5G）的主要挑战之一。为了克服低数据速率和长占空比的机器型设备（MTD）的控制开销问题，我们提出了一种无反馈的通信方案与纯ALOHA信道接入方案。理论分析的用户容量的纯ALOHA已进行的假设下，每个冲突的两个或两个以上的数据包，使所有的数据包不可解码。在这篇文章中，我们研究了滤波器组多载波偏移QAM子载波调制（FBMC-OQAM）假设的准确性。因此，测量了2个分组碰撞的影响，并分析了不同的信号干扰比（SIR）和分组长度值的影响。基于这些结果，一个N用户的场景模型的开发和验证的测量。对于所研究的场景，测量结果表明，实际的纯ALOHA信道接入方案的容量比理论预测高出约75%，这使得该方案成为5G中大规模MTC的有前途的方法。
Massive Machine-Type Communication (MTC) is one of the main challenges for current and future cellular mobile communication systems as 5G. To overcome the controlling overhead issue of Machine-Type Devices (MTD) with low data rates and long duty cycles, we propose a feedback-less communication scheme with a pure ALOHA channel access scheme. Theoretical analysis of the user capacity of pure ALOHA have been conducted under the assumption that each collision of two or more packets renders all packets undecodable. In this contribution, we investigate the accuracy of this assumption for a Filter Bank Multi Carrier with Offset-QAM subcarrier modulation (FBMC-OQAM) system. Therefore, the effects of a 2 packet collision are measured and the influence of different Signal-to-Interference Ratio (SIR) and packet length values are analyzed. Based on these results, a model for an N-user scenario is developed and validated by measurements. For the investigated scenario the measurement results show, that the capacity of a practical pure ALOHA channel access scheme is up to ≈ 75% higher than theoretically predicted, which renders this scheme a promising approach for massive MTC in 5G.