Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (5): 1512-1517.doi: 10.12305/j.issn.1001-506X.2023.05.28

• Communications and Networks • Previous Articles    

Hybrid beamforming algorithm in mmWave integrated sensing and communication

Xiaohui LI, Huanyang LI, Siting LYU, Mingli SHI   

  1. School of Teleommunications Engineering, Xidian University, Xi'an 710071, China
  • Received:2022-01-21 Online:2023-04-21 Published:2023-04-28
  • Contact: Huanyang LI

Abstract:

In order to solve the problem of high complexity of hybrid beamforming matrix in millimeter-wave (mmWave) integrated sensing and communication (ISAC) system, a low complexity algorithm is proposed to balance the performance of communication and radar perception. Firstly, an auxiliary matrix is introduced to ensure the consistency of full-digital beamforming matrix dimensions between communication and radar, and a solution method is designed to improve the tradeoff performance. Based on the above results, the analog and digital beamforming matrices are designed under constant modulus and power constraints to minimize the weighted sum of Euclidean distance between the analog and digital beamforming matrices and the communication and radar all-digital beamforming matrices. For the established optimization problem, a weighting-orthogonal matching pursuit (W-OMP) algorithm is proposed to solve it. Simulation analysis shows that the proposed algorithm can effectively generate beams towards to the detection targets while maintaining the communication performance.

Key words: integrated sensing and communication (ISAC), hybrid beamforming, millimeter-wave (mmWave), othogonal matching pursuit (OMP), low complexity

CLC Number: 

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