Energy Efficiency Optimization of Massive MIMO Systems Based on the Particle Swarm Optimization Algorithm
Authors: Yang, J., Zhang, L., Zhu, C., Guo, X. and Zhang, J.
Journal: Wireless Communications and Mobile Computing
Volume: 2021
eISSN: 1530-8677
ISSN: 1530-8669
DOI: 10.1155/2021/6622830
Abstract:As one of the key technologies in the fifth generation of mobile communications, massive multi-input multioutput (MIMO) can improve system throughput and transmission reliability. However, if all antennas are used to transmit data, the same number of radiofrequency chains is required, which not only increases the cost of system but also reduces the energy efficiency (EE). To solve these problems, in this paper, we propose an EE optimization based on the particle swarm optimization (PSO) algorithm. First, we consider the base station (BS) antennas and terminal users and analyze their impact on EE in the uplink and downlink of a single-cell multiuser massive MIMO system. Second, a dynamic power consumption model is used under zero-forcing processing, and it obtains the expression of EE that is used as the fitness function of the PSO algorithm under perfect and imperfect channel state information (CSI) in single-cell scenarios and imperfect CSI in multicell scenarios. Finally, the optimal EE value is obtained by updating the global optimal positions of the particles. The simulation results show that compared with the traditional iterative algorithm and artificial bee colony algorithm, the proposed algorithm not only possesses the lowest complexity but also obtains the highest optimal value of EE under the single-cell perfect CSI scenario. In the single-cell and multicell scenarios with imperfect CSI, the proposed algorithm is capable of obtaining the same or slightly lower optimal EE value than that of the traditional iterative algorithm, but the running time is at most only 1/12 of that imposed by the iterative algorithm.
https://eprints.bournemouth.ac.uk/35866/
Source: Scopus
Energy Efficiency Optimization of Massive MIMO Systems Based on the Particle Swarm Optimization Algorithm
Authors: Yang, J., Zhang, L., Zhu, C., Guo, X. and Zhang, J.
Journal: WIRELESS COMMUNICATIONS & MOBILE COMPUTING
Volume: 2021
eISSN: 1530-8677
ISSN: 1530-8669
DOI: 10.1155/2021/6622830
https://eprints.bournemouth.ac.uk/35866/
Source: Web of Science (Lite)
Energy Efficiency Optimization of Massive MIMO Systems Based on the Particle Swarm Optimization Algorithm
Authors: Yang, J., Zhang, L., Zhu, C., Guo, X. and Zhang, J.
Journal: Wireless Communications and Mobile Computing
Publisher: Hindawi
ISSN: 1530-8669
https://eprints.bournemouth.ac.uk/35866/
Source: Manual
Energy Efficiency Optimization of Massive MIMO Systems Based on the Particle Swarm Optimization Algorithm
Authors: Yang, J., Zhang, L., Zhu, C., Guo, X. and Zhang, J.
Journal: Wireless Communications and Mobile Computing
ISSN: 1530-8669
Abstract:As one of the key technologies in the fifth generation of mobile communications, massive multi-input multi-output (MIMO) can improve system throughput and transmission reliability.
However, if all antennas are used to transmit data, the same number of radio-frequency chains is required, which not only increases the cost of system but also reduces the energy efficiency (EE). To solve these problems, in this paper, we propose an EE optimization based on the particle swarm optimization (PSO) algorithm. First, we consider the base station (BS) antennas and terminal users, and analyze their impact on EE in the uplink and downlink of a single-cell multiuser massive MIMO system. Second, a dynamic power consumption model is used under zero-forcing processing, and it obtains the expression of EE that is used as the fitness function of the PSO algorithm under perfect and imperfect channel state information (CSI) in single-cell scenarios and imperfect CSI in multicell scenarios. Finally, the optimal EE value is obtained by updating the global optimal positions of the particles. The simulation results show that compared with the traditional iterative algorithm and artificial bee colony algorithm, the proposed algorithm not only possesses the lowest complexity but also obtains the highest optimal value of EE under the single-cell perfect CSI scenario. In the single-cell and multicell scenarios with imperfect CSI, the proposed algorithm is capable of obtaining the same or slightly lower optimal EE value than that of the traditional iterative algorithm, but the running time is at most only 1/12 of that imposed by the iterative algorithm.
https://eprints.bournemouth.ac.uk/35866/
Source: BURO EPrints