论文标题
索引调制的圆形旋转呼叫，用于双功能雷达和通信系统
Index-Modulated Circularly-Shifted Chirps for Dual-Function Radar & Communication Systems
论文作者
论文摘要
在这项研究中，我们分析了基于圆形迁移（CSC）的索引调制（IM），以进行双功能雷达与通信（DFRC）系统。我们开发一个考虑多个散射的最大似然（ML）范围估计器。为了提高传输波形和估计准确性的相关性能，我们提出了索引分离（IS），该索引分离将CSC分开。从理论上讲，我们表明在某些条件下分离可能很大而不会失去光谱效率（SE）。我们的数值结果表明，在某些情况下，基于ML的ML和线性最小均方根误差（LMMSE）可以提供大约3 dB的信噪比（SNR）的增益，而在某些情况下可以基本上提高估计准确性，而不会导致通信接收器的任何位误差比（BER）降解。
In this study, we analyze index modulation (IM) based on circularly-shifted chirps (CSCs) for dual-function radar & communication (DFRC) systems. We develop a maximum likelihood (ML) range estimator that considers multiple scatters. To improve the correlation properties of the transmitted waveform and estimation accuracy, we propose index separation (IS) which separates the CSCs apart in time. We theoretically show that the separation can be large under certain conditions without losing the spectral efficiency (SE). Our numerical results show that the IS combined ML and linear minimum mean square error (LMMSE)-based estimators can provide approximately 3 dB signal-to-noise ratio (SNR) gain in some cases while improving estimation accuracy substantially without causing any bit-error ratio (BER) degradation at the communication receiver.
