| 基于STBC的水声MIMO扩频通信系统仿真研究 |
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| 引用本文： | 李永,张歆.基于STBC的水声MIMO扩频通信系统仿真研究[J].电声技术,2009,33(10):49-51. |
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| 作者姓名： | 李永 张歆 |
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| 作者单位： | 西北工业大学航海学院,陕西,西安,710072 |
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| 摘 要： | 为改善水声扩频通信系统的传输距离与系统容量，将空时分组编码（STBC）技术引入水声通信，提出了一种基于STBC的水声多输入多输出（MIMO）扩频通信系统，给出了系统实现方案和性能仿真分析。仿真结果表明，通过引入两发射单接收的STBC，原系统可获得约3dB的发射分集增益和2倍于原系统的频带利用率，证实了该系统可在不牺牲有限系统带宽的情况下有效抑制多径衰落，显著改善通信系统容量和传输距离。
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| 关 键 词： | 空时分组编码 发射分集 水声通信 扩频通信 频率选择性衰落 |
Space-time Block Coding MIMO System for Underwater Acoustic Spread-spectrum Communication |
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| LI Yong,ZHANG Xin.Space-time Block Coding MIMO System for Underwater Acoustic Spread-spectrum Communication[J].Audio Engineering,2009,33(10):49-51. |
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| Authors: | LI Yong ZHANG Xin |
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| Affiliation: | LI Yong,ZHANG Xin(College of Marine Engineering,Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | To improve system capacity and transmission distance of underwater acoustic spread-spectrum communication system,the STBC(Space-Time Block Coding) technology is introduced into underwater acoustic communications and a new MIMO(Multiple-Input Multiple-Output) spread-spectrum system based on STBC is proposed.STBC is used to increase system capacity and improve system BER performance.The system solution is explained in detail and the performance simulation result is analyzed.The result shows that,through the i... |
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| Keywords: | STBC transmit diversity underwater acoustic communication spread-spectrum communication frequency selective fading |
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