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MAJoRCom: A Dual-Function Radar Communication System Using Index Modulation
IEEE Transactions on Signal Processing ( IF 5.4 ) Pub Date : 2020-01-01 , DOI: 10.1109/tsp.2020.2994394
Tianyao Huang , Nir Shlezinger , Xingyu Xu , Yimin Liu , Yonina C. Eldar

Dual-function radar communication (DFRC) systems implement both sensing and communication using the same hardware. Such schemes are often more efficient in terms of size, power, and cost, over using distinct radar and communication systems. Since these functionalities share resources such as spectrum, power, and antennas, DFRC methods typically entail some degradation in both radar and communication performance. In this work we propose a DFRC scheme based on the carrier agile phased array radar (CAESAR), which combines frequency and spatial agility. The proposed DFRC system, referred to as multi-carrier agile joint radar communication (MAJoRCom), exploits the inherent spatial and spectral randomness of CAESAR to convey digital messages in the form of index modulation. The resulting communication scheme naturally coexists with the radar functionality, and thus does not come at the cost of reduced radar performance. We analyze the performance of MAJoRCom, quantifying its achievable bit rate. In addition, we develop a low complexity decoder and a codebook design approach, which simplify the recovery of the communicated bits. Our numerical results demonstrate that MAJoRCom is capable of achieving a bit rate which is comparable to utilizing independent communication modules without affecting the radar performance, and that our proposed low-complexity decoder allows the receiver to reliably recover the transmitted symbols with an affordable computational burden.

中文翻译:

MAJoRCom:使用索引调制的双功能雷达通信系统

双功能雷达通信 (DFRC) 系统使用相同的硬件实现传感和通信。与使用不同的雷达和通信系统相比,此类方案在尺寸、功率和成本方面通常更有效。由于这些功能共享频谱、功率和天线等资源,DFRC 方法通常会导致雷达和通信性能有所下降。在这项工作中,我们提出了一种基于载波捷变相控阵雷达 (CAESAR) 的 DFRC 方案,它结合了频率和空间捷变。所提出的DFRC系统,称为多载波捷变联合雷达通信(MAJoRCom),利用CAESAR固有的空间和频谱随机性以索引调制的形式传送数字信息。由此产生的通信方案自然与雷达功能共存,因此不会以降低雷达性能为代价。我们分析了 MAJoRCom 的性能,量化了其可实现的比特率。此外,我们开发了一种低复杂度解码器和一种码本设计方法,可简化通信位的恢复。我们的数值结果表明,MAJoRCom 能够在不影响雷达性能的情况下实现与使用独立通信模块相当的比特率,并且我们提出的低复杂度解码器允许接收器以负担得起的计算负担可靠地恢复传输的符号。我们开发了一种低复杂度的解码器和一种码本设计方法,可以简化通信比特的恢复。我们的数值结果表明,MAJoRCom 能够在不影响雷达性能的情况下实现与使用独立通信模块相当的比特率,并且我们提出的低复杂度解码器允许接收器以负担得起的计算负担可靠地恢复传输的符号。我们开发了一种低复杂度的解码器和一种码本设计方法,可以简化通信比特的恢复。我们的数值结果表明,MAJoRCom 能够在不影响雷达性能的情况下实现与使用独立通信模块相当的比特率,并且我们提出的低复杂度解码器允许接收器以负担得起的计算负担可靠地恢复传输的符号。
更新日期:2020-01-01
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