Performance Analysis of OTFS Signal with Different Pulse Shapes for JCR Systems

Olivia Zacharia, V. M
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引用次数: 3

Abstract

The integration of radars and communication systems has become inevitable due to the need for sharing the radar spectrum with communication systems as the communication spectrum is being congested due to the increased number of connected devices. The recently evolved orthogonal time frequency space (OTFS) modulation scheme was found to be very efficient in designing a joint communication and radar (JCR) waveform. We propose a circular-prolate pulse shape (CPPS) for the OTFS modulation scheme and perform a comparative analysis of various existing pulse shapes for OTFS in terms of bit error rate (BER) and out-of-band (OoB) power radiation. We then investigate the application of the proposed pulse shape in an OTFS based JCR system by providing simulation results for a linear minimum mean square error (LMMSE) communication data receiver and both generalized likelihood ratio test detector (GLRT) and matched filter detector for target parameter estimation. Results show that the proposed CPPS OTFS has the least OoB compared to the other pulse shapes while being able to provide a BER performance similar to that of the existing pulse shapes like the discrete prolate spheroidal pulse shape (DPSPS) and the circular Dirichlet pulse shape (CDPS).
JCR系统中不同脉冲形状OTFS信号的性能分析
由于连接设备数量的增加,通信频谱日益拥挤,因此需要与通信系统共享雷达频谱,因此雷达和通信系统的融合成为必然。最近发展的正交时频空间(OTFS)调制方案在设计联合通信和雷达(JCR)波形方面非常有效。我们提出了一种用于OTFS调制方案的圆长脉冲形状(CPPS),并从误码率(BER)和带外(OoB)功率辐射的角度对OTFS的各种现有脉冲形状进行了比较分析。然后,我们通过提供线性最小均方误差(LMMSE)通信数据接收器和用于目标参数估计的广义似然比检验检测器(GLRT)和匹配滤波检测器的仿真结果,研究了所提出的脉冲形状在基于OTFS的JCR系统中的应用。结果表明,与其他脉冲形状相比,所提出的CPPS OTFS具有最小的OoB,同时能够提供与现有脉冲形状(如离散延长球体脉冲形状(DPSPS)和圆形狄利克雷脉冲形状(CDPS))相似的误码率性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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