Patent
Large-scale MIMO underwater acoustic communication method and system
Gao Xiqi,Wenqian Wu,Sun Chen +2 more
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TLDR
In this paper, a large-scale multiple-input multiple-output (MIMO) underwater acoustic communication system was proposed, where the low-dimension precoding design based on deterministic equivalence is suitable for the situation that the transmitting end or the receiving end is provided with the large scale array.Abstract:
The invention provides a large-scale multiple-input multiple-output (MIMO) underwater acoustic communication method and a large-scale MIMO underwater acoustic communication system. A transmitting endor a receiving end is provided with a large-scale transducer array, and the transmitting end carries out the low-complexity precoding matrix design through the statistical channel information of a beam domain and the sparse characteristics of an underwater acoustic channel, wherein the low-dimension precoding design based on deterministic equivalence is suitable for the situation that the transmitting end or the receiving end is provided with the large-scale array. Particularly, when the transmitting end is configured with dozens of transmitting transducers, a precoding matrix can be obtainedthrough beam domain power distribution. And when both the transmitting end and the receiving end are provided with dozens of transducers, the optimal beam domain power distribution can be realized through a classical water injection algorithm. According to the method provided by the invention, the spectral efficiency and the power efficiency of underwater acoustic communication can be remarkably improved, so that the transmission rate and the transmission distance are greatly improved, and meanwhile, the problem that the related precoding design is complex is solved.read more
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