A Smart Pilot Assignment in Multi-Cell Massive MIMO Systems Using Virtual Modeling of Assigning Cost
| العنوان: | A Smart Pilot Assignment in Multi-Cell Massive MIMO Systems Using Virtual Modeling of Assigning Cost |
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| المؤلفون: | Hossein Zamiri-Jafarian, Morteza Khademi, Reza Ebrahimi |
| المصدر: | IEEE Transactions on Signal Processing. 69:2468-2480 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Computer science, MIMO, Duplex (telecommunications), 020206 networking & telecommunications, 02 engineering and technology, Interference (wave propagation), Security token, Computer engineering, Data exchange, Signal Processing, Telecommunications link, 0202 electrical engineering, electronic engineering, information engineering, Electrical and Electronic Engineering, Integer programming, Virtual channel, Computer Science::Information Theory |
| الوصف: | In this paper, a smart pilot sequence assignment method is proposed to minimize inter-cell interference generated in a massive multi-input multi-output (MIMO) system due to pilot contamination in uplink TDD (Time Division Duplex) mode. The proposed method employs a zero-one integer linear programming method as the assignment algorithm. The amount of intercell interference imposed on the target cell users is considered as assigning cost. The introduced assigning cost is composed of the steering vectors of the desired users in the target cell, and the sum of the channel correlation matrices of interference users in adjacent cells. By exploiting the virtual channel modeling technique, we develop a simple alternative approach to calculate the assigning cost, which has low complexity. We prove that the new assigning cost, called virtual assigning cost, is equal to the assigning cost defined based on the physical channel model. Moreover, we develop a token-based protocol to manage the coupling between cells in the whole multicellular network based on a distributed manner without the need for data exchange between the BSs. Simulation results demonstrate that the proposed low complex smart pilot sequence assignment method achieves a good performance, which is better than those of some other related works in multicellular design regarding normalized mean square error (NMSE) and achievable rate criteria. |
| تدمد: | 1941-0476 1053-587X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::007807976fbb5d7fd133e29ad84557f6Test https://doi.org/10.1109/tsp.2021.3070987Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........007807976fbb5d7fd133e29ad84557f6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19410476 1053587X |
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