Multi-Access Spreading over Time: MAST

Multi-Access Spreading over Time: MAST
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随着时间的推移多路访问传播:MAST

DOI:
10.1145/3345768.3355927
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发表时间:
2019
期刊:
Proceedings of the 22nd International ACM Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
影响因子:
--
通讯作者:
M. Fidler
M. Fidler
中科院分区:
--
文献类型:
--
作者:
S. Akın;M. Fidler

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在本文中,我们考虑具有多个发射机的多址通信信道,这些发射机随机进入一个信道并将它们的数据发送到一个接收机。发送器不同步,接收器不向发送器发送任何反馈。我们提出了一种媒体接入控制(MAC)协议,称为随时间扩展的多址接入协议(MAST)。在该协议中,为了减轻用户干扰的影响,每个发射机在比其编码和调制的分组大小大得多的时间帧上扩展其接入。为了执行该操作,发射机从集合中选择扩展矩阵,这是所有发射机和接收机都知道的。我们解析地得到了用户干扰条件下的分组译码概率,并通过仿真验证了我们的结果。最后比较了该协议和Zig-ZAG协议的误码率性能,结果表明,在相同的扩频条件下,无论在低信噪比还是高信噪比条件下,MAST都优于Zig-ZAG协议。
In this paper, we consider a multi-access communication channel with many transmitters that randomly enter a channel and send their data to a receiver. The transmitters are not synchronized and the receiver does not send any feedback to the transmitters. We propose a Medium Access Control (MAC) protocol, which we call Multi-Access Spreading over Time (MAST). In this protocol, in order to mitigate the effects of user interference, each transmitter spreads its access over a time frame that is much larger than its encoded and modulated packet size. In order to perform this operation, the transmitters choose a spreading matrix from a set, which is known by all the transmitters and the receiver. We obtain the packet decoding probability analytically under user interference conditions, and substantiate our results with simulations. We finally compare the symbol-error probability performance of our protocol with the one of the Zig-zag protocol, and show that MAST outperforms the Zig-zag protocol under the same spreading conditions in both low and high signal-to-noise ratio regimes.
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