Power optimisation of simultaneously transmitted communication and radar waveforms from a common array

• Main Authors: Xiang Liu, Huaiying Tan, Tianyao Huang, Yimin Liu, Jie Zhou
• Format: Article
• Language: English
• Published: Wiley 2019-08-01
• Series: The Journal of Engineering
• Subjects: optimisation; CW radar; radar signal processing; radar applications; hardware-saving solution; competitive spectrum environments; array probing signal; synthesised communication; radar waveforms; given array transmitting power; no-waveform-error constraint; unit-modular-array-probing-signal constraint; alternating direction method; synthesised waveforms; power optimisation; simultaneously transmitted communication; common array; communication waveforms
• Online Access: https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0223

Synthesising radar and communication waveforms in different directions using a common array is a hardware-saving solution for the coexistence of communication and radar in competitive spectrum environments. Here, the authors establish the problem of designing array probing signal to maximise power of the synthesised communication and radar waveforms, given array transmitting power, under no-waveform-error constraint and unit-modular-array-probing-signal constraint. Alternating direction method of multipliers (ADMM) is used to solve this problem. The results of numerical experiments show that, by solving this problem with ADMM, error of the synthesised waveforms can be completely eliminated, and the power of synthesised waveforms is almost optimal.