A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous Network
In this paper, the precoders capable of maximizing the weighted sum rate (WSR) for multicell scenarios under power budget constraint conditions per cell were considered based on the MIMO system performance. This rate is strongly affected by intracellular interference, so we recommend using coordinat...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2022/8378526 |
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| author | Mohammad Reza Pouryeganeh Azim Fard Mohammad Bagher Tavakoli |
| author_facet | Mohammad Reza Pouryeganeh Azim Fard Mohammad Bagher Tavakoli |
| author_sort | Mohammad Reza Pouryeganeh |
| collection | DOAJ |
| description | In this paper, the precoders capable of maximizing the weighted sum rate (WSR) for multicell scenarios under power budget constraint conditions per cell were considered based on the MIMO system performance. This rate is strongly affected by intracellular interference, so we recommend using coordinated beam forming (CBF). If the number of user equipment provided per cell is small enough to the number of transmit antennas, simple linear beamformers, such as matched filter (MF), achieve higher performance rates. In general cases, two algorithms meet the best performance in terms of the total achievable rate; these are KG (Kim Giannakis) and WSMSE (Weighted Sum Minimum Squared Error) algorithms. In the KG method, the objective function of the sum rate is suggested to be divided into two functions, one function for the desired user rate and the other for the sum rate of the remaining users. In the WSMSE algorithm, maximizing the sum rate is solved by redefining it as the problem of minimizing the MSE (Mean Square Error) function. These functions are convex and nonconvex functions, respectively. In the proposed method, the WSMSEs were modified to reduce the complexity and calculations to provide optimal performance in beamforming. |
| format | Article |
| id | doaj-art-9839a679b8d949b68d350107e0d98146 |
| institution | Kabale University |
| issn | 1687-5877 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-9839a679b8d949b68d350107e0d981462025-08-20T03:37:22ZengWileyInternational Journal of Antennas and Propagation1687-58772022-01-01202210.1155/2022/8378526A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous NetworkMohammad Reza Pouryeganeh0Azim Fard1Mohammad Bagher Tavakoli2Department of Electrical EngineeringDepartment of Electrical EngineeringDepartment of Electrical EngineeringIn this paper, the precoders capable of maximizing the weighted sum rate (WSR) for multicell scenarios under power budget constraint conditions per cell were considered based on the MIMO system performance. This rate is strongly affected by intracellular interference, so we recommend using coordinated beam forming (CBF). If the number of user equipment provided per cell is small enough to the number of transmit antennas, simple linear beamformers, such as matched filter (MF), achieve higher performance rates. In general cases, two algorithms meet the best performance in terms of the total achievable rate; these are KG (Kim Giannakis) and WSMSE (Weighted Sum Minimum Squared Error) algorithms. In the KG method, the objective function of the sum rate is suggested to be divided into two functions, one function for the desired user rate and the other for the sum rate of the remaining users. In the WSMSE algorithm, maximizing the sum rate is solved by redefining it as the problem of minimizing the MSE (Mean Square Error) function. These functions are convex and nonconvex functions, respectively. In the proposed method, the WSMSEs were modified to reduce the complexity and calculations to provide optimal performance in beamforming.http://dx.doi.org/10.1155/2022/8378526 |
| spellingShingle | Mohammad Reza Pouryeganeh Azim Fard Mohammad Bagher Tavakoli A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous Network International Journal of Antennas and Propagation |
| title | A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous Network |
| title_full | A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous Network |
| title_fullStr | A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous Network |
| title_full_unstemmed | A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous Network |
| title_short | A Novel Design of Hybrid Precoder in Multicell, Multiuser Heterogeneous Network |
| title_sort | novel design of hybrid precoder in multicell multiuser heterogeneous network |
| url | http://dx.doi.org/10.1155/2022/8378526 |
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