Space-division multiple access for CDMA multiuser underwater acoustic communications
Space-division multiple access for CDMA multiuser underwater acoustic communications
复制标题
CDMA 多用户水声通信的空分多址
DOI：
10.1109/jsee.2015.00129
复制
发表时间：
2015-12-01
影响因子：
2.1
通讯作者：
Zhou, Huanling
中科院分区：
文献类型：
--
作者：
Yin, Jingwei;Du, Pengyu;Zhou, Huanling
时间反转镜(TRM)可以利用水声信道的物理特性，在多用户水声通信中聚焦目标用户。主动平均声强(AASI)检测器可以同时估计同一频段用户的所有方位，从而通过矢量组合实现定向通信。提出了一种基于TRM和AASI检测器相结合的空分多址(SDMA)技术，可以显著提高码分多址(CDMA)水声通信系统的容量。仿真和湖试结果表明，该7用户水声多用户系统能够实现低误码通信。
Time reversal mirror (TRM) can use the physical characteristics of the underwater acoustic (UWA) channel to focus on the desired user in multi-user UWA communication. The active average sound intensity (AASI) detector can estimate all azimuths of users with the same frequency band at the same time in order to achieve directional communication by vector combination. Space-division multiple access (SDMA) based on TRM combined with the AASI detector is proposed in this paper, which can make the capacity of the code division multiple access (CDMA) UWA system significantly increase. The simulation and lake test results show that the 7-user UWA multi-user system can achieve low bit error communication.