UD-MIMO: Uplink Distributed MIMO for Wireless LANs
UD-MIMO: Uplink Distributed MIMO for Wireless LANs
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DOI：
10.1109/secon52354.2021.9491622
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发表时间：
2021-07
期刊：
影响因子：
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通讯作者：
Hossein Pirayesh;Pedram Kheirkhah Sangdeh;Qiben Yan;Huacheng Zeng
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文献类型：
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作者：
Hossein Pirayesh;Pedram Kheirkhah Sangdeh;Qiben Yan;Huacheng Zeng
无线区域网络（WLAN）是我们社会中电信基础设施的关键组成部分，而已经生产了许多解决方案来改善其下行链接的吞吐量，而增强其上行链接的技术仍然有限。由于大多数设备的硬件限制，细粒度间的同步。在没有细粒度的节点间同步的情况下，多输入和数字输出方案（称为UD-MIMO）启用并发上行链路传输。从异步用户使用UD-MIMO。 UD-MIMO在无线测试床上的原型，并证明了其与商业现成的Atheros 802.11客户端设备的兼容性（带有修改的Linux驱动程序）。与避免干扰方法相比，MIMO提供3.4倍的吞吐量。
Wireless local area networks (WLANs) are a key component of the telecommunications infrastructure in our society. While many solutions have been produced to improve their downlink throughput, the techniques for enhancing their uplink throughput remain limited. The stagnation can be attributed to the lack of fine-grained inter-node synchronization due to the hardware limitation of most devices. In this paper, we present an uplink distributed multiple-input-and-multiple-output scheme (termed UD-MIMO) for WLANs to enable concurrent uplink transmission in the absence of fine-grained inter-node synchronization. The enabling technique behind UD-MIMO is a practical solution to decoding uplink packets from asynchronous users. UD-MIMO makes it possible for WLANs to significantly improve their uplink throughput while not requiring tight internode synchronization. We have built a prototype of UD-MIMO on a wireless testbed and demonstrate its compatibility with commercial off-the-shelf Atheros 802.11 client devices (with modified Linux driver). Our experimental results show that, for a WLAN with 8 APs in a conference room, UD-MIMO offers 3.4× throughput compared to interference-avoidance approach.