Enhanced Projection-Type Receivers in Uplink ISAC Systems
Yu Z, Ren H, Pan C, Zhou G, Wang J (2025)
Publication Type: Conference contribution
Publication year: 2025
Journal
Publisher: Institute of Electrical and Electronics Engineers Inc.
Pages Range: 4517-4522
Conference Proceedings Title: IEEE International Conference on Communications
Event location: Montreal, QC
ISBN: 9798331505219
DOI: 10.1109/ICC52391.2025.11160919
Abstract
Projection-type receivers have recently emerged as a promising approach for uplink integrated sensing and communications (ISAC) systems, facilitating simultaneous uplink signal detection and target sensing. However, the signal detection problem within projection-type receivers faces challenges due to the high dimensionality and rank-deficiency of the equivalent channel matrix. To address this rank-deficiency issue, we introduce two novel variations to reconfigure the equivalent channel matrix: the Projection-Tikhonov (PT) receiver and the Projection-Orthogonal Multiple Access (P-OMA) transceiver. The PT receiver is specifically designed to mitigate the impact of rank-deficiency through regularization, while the P-OMA transceiver utilizes the independent columns of the equivalent channel matrix to transmit a reduced number of communication symbols. For signal detection with the reconfigured channel matrix, we demonstrate that while the linear decoding algorithm can be effectively computed for various projection-type receivers, it yields poor performance. Given the high dimensionality of the equivalent channel matrix, we propose an efficient iterative algorithm based on the extreme point pursuit (EXPP) framework, using a low-complexity linear detector as the initial point. Finally, simulation results validate the effectiveness of the proposed design.
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APA:
Yu, Z., Ren, H., Pan, C., Zhou, G., & Wang, J. (2025). Enhanced Projection-Type Receivers in Uplink ISAC Systems. In Matthew Valenti, David Reed, Melissa Torres (Eds.), IEEE International Conference on Communications (pp. 4517-4522). Montreal, QC, CA: Institute of Electrical and Electronics Engineers Inc..
MLA:
Yu, Zhiyuan, et al. "Enhanced Projection-Type Receivers in Uplink ISAC Systems." Proceedings of the 2025 IEEE International Conference on Communications, ICC 2025, Montreal, QC Ed. Matthew Valenti, David Reed, Melissa Torres, Institute of Electrical and Electronics Engineers Inc., 2025. 4517-4522.
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