A Low-complexity Noise Reduction Scheme for Target Detection in the 2D Integrated Sensing And Communication System
Conference article in proceedings
2023 IEEE International Conference on Communications Workshops, IEEE International Conference on Communications Workshops
AbstractThis paper deals with low-complexity noise reduction for linear frequency modulated continuous-wave (FMCW) signals in the multiple input multiple output integrated sensing and communication system. The conventional low-rank filter, which significantly reduces the noise, becomes impractical for two-dimensional (2D) arrays because of the huge computational burden caused by the 2D eigen value decomposition (EVD). To address the computational issue, first a low-complexity filter with two separated one-dimensional low-rank filters is proposed so that the high-complexity EVD can be avoided. Furthermore, a discrete cosine transform-based filter is proposed to achieve an efficient denoising performance without the need for accurate estimations of sample covariance matrix. The simulation results illustrate that: i) our scheme improves the denoising performance with a low complexity and it is practically feasible; ii) decreasing the rank leads to a higher output signal to noise ratio of the target, which further results in a better detection probability.
Funding Information: This work is supported by the Fundamental Research Funds for the Central Universities 2022JBXT001, 2022JBQY004, and the State Key Laboratory of Rail Traffic Control and Safety (Contract: No.RCS2022ZT015 ), NSFC under Grant 62271043, and Beijing Natural Science Foundation L221009. Publisher Copyright: © 2023 IEEE.
integrated sensing and communication (ISAC), millimeter wave (mmWave), Noise reduction, target detection
Zhu , L , Liu , Y , He , D , Vorobyov , S A & Zhong , Z 2023 , A Low-complexity Noise Reduction Scheme for Target Detection in the 2D Integrated Sensing And Communication System . in 2023 IEEE International Conference on Communications Workshops : Sustainable Communications for Renaissance, ICC Workshops 2023 . IEEE International Conference on Communications Workshops , IEEE , pp. 909-914 , IEEE International Conference on Communications Workshops , Rome , Italy , 28/05/2023 . https://doi.org/10.1109/ICCWorkshops57953.2023.10283759