Academic Journal
Multi-Static Target Detection and Power Allocation for Integrated Sensing and Communication in Cell-Free Massive Mimo
| العنوان: | Multi-Static Target Detection and Power Allocation for Integrated Sensing and Communication in Cell-Free Massive Mimo |
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| المؤلفون: | Cavdar, C., Bjornson, E., Sung, K.W., Behdad, Z., Demir, O.T. |
| بيانات النشر: | Institute of Electrical and Electronics Engineers Inc. |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | C-RAN, cell-free massive MIMO, Integrated sensing and communication (ISAC), multi-static sensing, power allocation, Clutter (information theory), Energy efficiency, MIMO systems, Radar cross section, Signal to noise ratio, Spectrum efficiency, Cell-free, Cell-free massive multiple-input multiple-output, Integrated sensing, Integrated sensing and communication, Multiple inputs, Multiple outputs, Multistatics, Power allocations, Benchmarking |
| الوصف: | This paper studies an integrated sensing and communication (ISAC) system within a centralized cell-free massive MIMO (multiple-input multiple-output) network for target detection. ISAC transmit access points serve the user equipments in the downlink and optionally steer a beam toward the target in a multi-static sensing framework. A maximum a posteriori ratio test detector is developed for target detection in the presence of clutter, so-called target-free signals. Additionally, sensing spectral efficiency (SE) is introduced as a key metric, capturing the impact of resource utilization in ISAC. A power allocation algorithm is proposed to maximize the sensing signal-to-interference-plus-noise ratio while ensuring minimum communication requirements. Two ISAC configurations are studied: utilizing existing communication beams for sensing and using additional sensing beams. The proposed algorithm;#x2019;s efficiency is investigated in realistic and idealistic scenarios, corresponding to the presence and absence of the target-free channels, respectively. Despite performance degradation in the presence of target-free channels, the proposed algorithm outperforms the interference-unaware benchmark, leveraging clutter statistics. Comparisons with a fully communication-centric algorithm reveal superior performance in both cluttered and clutter-free environments. The incorporation of an extra sensing beam enhances detection performance for lower radar cross-section variances. Moreover, the results demonstrate the effectiveness of the integrated operation of sensing and communication compared to an orthogonal resource-sharing approach. Authors |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | IEEE Transactions on Wireless Communications; Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı; https://doi.org/10.1109/TWC.2024.3383209; https://hdl.handle.net/20.500.11851/11553; WOS:001312963400035 |
| DOI: | 10.1109/TWC.2024.3383209 |
| الاتاحة: | https://hdl.handle.net/20.500.11851/11553 https://doi.org/10.1109/TWC.2024.3383209 |
| Rights: | open |
| رقم الانضمام: | edsbas.DBC83516 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1109/TWC.2024.3383209 |
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