采用非相干格拉斯曼（Grassmannian）信令的低检测概率通信
Low Probability of Detection Communication Using Noncoherent Grassmannian Signaling
AI总结：
该研究提出基于DSSS和格拉斯曼信令的非相干LPD通信系统，利用格拉斯曼星座的类噪声特性提升隐蔽性，仿真验证其在低SNR下BER性能优异且检测概率更低，为隐蔽通信提供了实用安全的新方案。
摘要：
本文提出了一种基于直接序列扩频（DSSS）和格拉斯曼（Grassmannian）信令的非相干低检测概率（LPD）通信系统。格拉斯曼星座因呈现类噪声分布而提升了隐蔽性。仿真结果表明，与采用QPSK或QAM调制格式且需要导频进行信道估计的相干方案相比，格拉斯曼信令在低信噪比（SNR）区间下具有具备竞争力的误码率（BER），且在非预期接收端的检测概率更低。研究结果表明，非相干格拉斯曼信令凭借更优的隐蔽性和性能，在LPD通信中具备实用性与安全增益。
英文摘要：
This paper proposes a noncoherent low probability of detection (LPD) communication system based on direct sequence spread spectrum (DSSS) and Grassmannian signaling. Grassmannian constellations enhance covertness because they tend to follow a noise-like distribution. Simulations showed that Grassmannian signaling provides competitive bit error rates (BER) at low signal-to-noise ratio (SNR) regimes with low probability of detection at the unintended receiver compared to coherent schemes that use QPSK or QAM modulation formats and need pilots to perform channel estimation. The results suggest the practicality and security benefits of noncoherent Grassmannian signaling for LPD communications due to their improved covertness and performance.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
