Dirty Paper Coding for Waveform Synthesis in Integrated Sensing and Communications: A Broadcast Channel Approach
Dirty Paper Coding for Waveform Synthesis in Integrated Sensing and Communications: A Broadcast Channel Approach
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DOI：
10.1109/icc45855.2022.9839206
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发表时间：
2022-05
期刊：
影响因子：
--
通讯作者：
Husheng Li
中科院分区：
文献类型：
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作者：
Husheng Li
在集成的传感和通信（ISAC）中，这两个功能均使用相同的频谱，波形和硬件紧密整合。在通信中，ISAC和广播频道之间确定了类比，因为尽管通信和传感之间的功能重叠，但ISAC发射器广播信号既是通信接收器和传感的信号。尽管通信信号也可以用于传感，但通信的固有随机性会损害传感的可靠性。因此，为了提高感应性能，添加了专用和确定性的传感波形。为了删除专用传感波形对通信接收器的干扰，采用了肮脏的纸质编码，这利用了对干扰取消的预编码。同时，确定了通信与传感之间的权衡。数值结果用于证明拟议的ISAC计划和性能权衡。
In integrated sensing and communications (ISAC), both functions are tightly integrated using the same spectrum, waveform and hardware. Analogy is identified between ISAC and broadcast channel in communications, since ISAC transmitter broadcasts signals for both communication receivers and sensing, despite the functional overlap between communications and sensing. Although the communication signal can also be used for sensing, the intrinsic randomness of communications impairs the reliability of sensing. Therefore, a dedicated and deterministic sensing waveform is added, in order to improve the sensing performance. To remove the interference of the dedicated sensing waveform to communication receivers, dirty paper coding is employed, which exploits precoding for interference cancellation. Meanwhile, the trade-off between communications and sensing is identified. Numerical results are used to demonstrate the proposed ISAC scheme and the performance trade-off.