Maritime wireless sensor networks are considered to be the primary means of monitoring methods in the marine environment. The transmission between sensor node and sink node in maritime wireless sensor networks is usually unreliable due to the harsh propagation environment. To extend the transmission range or to enhance the transmission reliability between sensor nodes and sink node, we propose a macrodiversity reception scheme in the sink node equipped with distributed multiple hard-decision receivers. Multiple receivers are divided into several clusters and placed at different locations to receive different signal copies suffering from different fadings. Furthermore, a cascaded combining strategy based on hard-decision information is used to reduce the overall complexity of receiving side. The experimental results in the ocean scenarios show that the macrodiversity reception scheme with two antenna clusters has a transmission gain of 3–4 dB compared with the single antenna reception when the package loss rate is ${10}^{-2}$ . The study casts a new method for reliable transmission in maritime wireless sensor networks using commercial transceivers which can only output hard-decision results.

中文翻译：

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用于海事无线传感器网络的具有分布式硬决策接收器的宏分集接收。

海上无线传感器网络被认为是海洋环境中监测方法的主要手段。由于恶劣的传播环境，水上无线传感器网络中传感器节点和宿节点之间的传输通常是不可靠的。为了扩展传输范围或提高传感器节点与宿节点之间的传输可靠性，我们提出了在具有分布式多个硬决策接收机的宿节点中的宏分集接收方案。多个接收器分为几个簇，并放置在不同的位置，以接收遭受不同衰落影响的不同信号副本。此外，基于硬决策信息的级联组合策略用于降低接收方的整体复杂度。 ${10}^{-2}$ 。该研究为使用商用收发器的海上无线传感器网络中的可靠传输提供了一种新方法，该方法只能输出硬判决结果。