Asynchronous multiuser underwater acoustic communications (L).
Asynchronous multiuser underwater acoustic communications (L).
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DOI：
10.1121/1.4726029
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发表时间：
2012-07
期刊：
影响因子：
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通讯作者：
Steve E. Cho;Heechun Song;W. Hodgkiss
中科院分区：
文献类型：
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作者：
Steve E. Cho;Heechun Song;W. Hodgkiss
提出了一种无需使用码分多址或反馈信道即可支持多址水下通信的异步多用户系统。空间上分离的用户所经历的丰富的多径信道将足以确保在基站分离冲突的分组。迭代接收机将以块方式采用自适应时间反转处理、匹配跟踪和连续干扰消除的组合，以实现多用户可分离性。在KAM11实验期间收集的数据被用来说明系统在动态、时变环境中的能力。
An asynchronous multiuser system is proposed to support multiple-access underwater communications without the use of code-division multiple-access or a feedback channel. The rich multipath channels experienced by spatially separated users will be sufficient to ensure separation of collided packets at the base station. The iterative receiver will employ a combination of adaptive time-reversal processing, matching pursuit, and successive interference cancellation in a block-wise fashion to achieve multiuser separability. Data collected during the KAM11 experiment are used to illustrate the system's capability in a dynamic, time-varying environment.