四创科技有限公司;福州大学先进制造学院;
提出了一种结合脉冲位置索引调制(Pulse Position Modulation, PPM)和置换索引调制的差分混沌移位键控(Permutation Index Differential Chaos Shift Keying, PI-DCSK)调制系统(PPM-PI-DCSK)来提升数据传输速率，同时结合了多输入多输出技术。在所提出的PPM-PI-DCSK系统中，比特流被分成若干块，被PPM和PI-DCSK联合调制后，通过不同的天线发射进行合并接收和解调。利用不同移位混沌信号间的弱相关性，该方案可以显著抑制发射天线间的干扰，恢复所需的信息并实现完整的分集增益，同时无需复杂信道估计。仿真结果表明，在误码率(Bit Error Rate, BER)为10-4时，两天线PPM-PI-DCSK方案优于两天线PI-DCSK,约5 dB。因此，该方案适用于无线电力、水利水务数据传输等短距离低复杂度的无线物联网场景。
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基本信息:
DOI：
中图分类号:TN911.3
引用信息:
[1]郑楚飞,朱自强,和青山.面向物联网传输的多天线混沌索引调制技术[J].无线电工程,2025,55(01):45-49.
基金信息:
国家自然科学基金面上项目(61871132)~~