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VDES系统中π/4-OQPSK调制方式仿真研究

Journal of Shenyang Ligong University(2018)

Cited 2|Views5
Abstract
随着船舶自动识别系统(AIS)交换能力及链路负载与用户数量之间矛盾的日益凸显,甚高频数据交换系统(VDES)未来必将替代AIS系统.以VDES为研究背景,在对其工作机理及关键技术分析的基础上,针对该系统中的调制解调技术进行了深入研究,并以π/4-OQPSK调制方式为研究对象,对其通信过程进行仿真分析.仿真结果表明:在无信道干扰且信噪比15 dB时系统误码性能在10-4以下;在莱斯信道下,当信噪比大于30 dB时,系统误码性能在10-3以下.
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