Virtual MIMO Transmissions for Underwater Acoustic Communications with Moving Platforms
Virtual MIMO Transmissions for Underwater Acoustic Communications with Moving Platforms
复制标题
用于移动平台水下声学通信的虚拟 MIMO 传输
DOI：
10.1145/3366486.3366532
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Pan, Miao
中科院分区：
文献类型：
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作者：
Fu, Qiang;Song, Aijun;Tao, Qiuyang;Zhang, Fumin;Pan, Miao
与多个自主水下航行器（auv）的水声通信至关重要，因为它支持海洋中的协调团队任务。auv作为紧凑的移动平台，计算资源和物理空间有限，因此阻碍了多天线传输等频谱高效声学通信策略的采用。例如，在AUV上只安装一个发射器。当特派团涉及多辆车辆时，分配有限的通信资源也是一个关键问题。在这里，我们提出了一种虚拟多输入/多输出（MIMO）策略，用于与多个auv通信。虚拟MIMO策略从auv的子集中选择发射机组成虚拟发射阵列。目标是提高上行链路的频谱效率，上行链路指的是从auv到系泊通信基站的传输连接。采用用户选择算法确定数据传输的活动AUV子集，以保证访问时隙的公平性。结合自适应调制，进一步提高了吞吐量。用户选择和调制选择是由通信范围的预测数据速率决定的，而不是信道状态信息，从而避免了高昂的开销。在计算机仿真中，使用了车辆特定任务轨迹、BELLHOP模拟声通信信道和时间反转通信接收机，对水下虚拟MIMO方案的性能进行了测试。仿真结果表明，该算法在5个auv场景下具有较高的总体吞吐量。此外，在最大化总体吞吐量的同时，还考虑了时隙分配的公平性。
Underwater acoustic communications with multiple autonomous underwater vehicles (AUVs) is critically important because it supports the coordinated team mission in the ocean. AUVs, as compact mobile platforms, have limited computing resources and physical space, thus impeding the adoption of spectrally-efficient acoustic communication strategies including multi-antennas transmissions. For example, only a single transmitter is installed on an AUV. Allocation of limited communication resources is also a critical issue when multiple vehicles are involved in the mission. Here, we propose a virtual multiple-input/multiple-output (MIMO) strategy for communications with multiple AUVs. The virtual MIMO strategy selects the transmitters from a subset of AUVs to form a virtual transmit array. The objective is to increase spectral efficiency for the uplink, referring to the transmission connection from the AUVs to moored communication base stations. A user selection algorithm is used to determine the active AUV subset for data transmissions, to ensure the fairness in access to the time slots. Adaptive modulation is combined to improve the throughput further. The user selection and modulation choice are decided by predicted data rates derived from the communication range rather than the channel state information, thus avoiding the high overhead. The performance of the underwater virtual MIMO scheme has been examined in computer simulations, where the vehicle-specific mission tracks, simulated acoustic communication channels from BELLHOP, and time reversal communication receivers were used. The simulation results showed that the proposed algorithm achieved a high overall throughput in a scenario with five AUVs. Further, the assignment fairness of time slots was considered while maximizing the overall throughput.
使用自主水下航行器对水质和水深进行高空间分辨率测绘
DOI：
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发表时间：
2015
期刊：
影响因子：
--
作者：
V. Pampalone;B. Milici
通讯作者：
B. Milici
基于模型的自适应行为框架，用于海洋机器人的最佳声学通信和传感
影响因子：
4.1
作者：
Toby Schneider;H. Schmidt
通讯作者：
H. Schmidt