Performance Improvement of Time-Sensitive Fronthaul Networks in 5G Cloud-RANs Using Reinforcement Learning-Based Scheduling Scheme

With the development of the fifth generation (5G) wireless networks, the dense, heterogeneous and irregular network architecture puts forward higher requirements for inter-cell interference coordination (ICIC) technology. How to combine the existing technology to suppress inter-cell interference has become a focus worthy of research. This paper proposes a novel ICIC scheme that combines three-dimensional (3D) multi-level soft frequency reuse (ML-SFR) and coordinated multi-point (CoMP) transmission technology. Based on the scheme, a model of ML-SFR and CoMP is built for different scenarios. Finally, the information rates of users at the cell edge and the entire cell are analyzed through simulation, respectively. The results show that the proposed scheme is superior to the traditional anti-interference technology in suppressing inter-cell interference. The proposed scheme can effectively improve the transmission performance of the 5G wireless networks.

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A Novel ICIC Scheme Combining 3D ML-SFR and CoMP

In the uplink channel of the 3GPP long term evolution (LTE) and LTEAdvanced (LTE-A) systems, signal carrier frequency-division multiplexing access (SC-FDMA) transmission scheme is employed instead of orthogonal frequency-division multiplexing (OFDM) to reduce the peak-to-average power ratio (PAPR). However, compared to OFDM, SC-FDMA has lower channel throughput, since it suffers from inter-symbol interference (ISI). Multi-rate equalizer (MRE) is a novel low complexity and non-linear equalizer which can increase the channel throughput. The basic idea of the MRE is that it first decomposes the single ISI channel into two parallel sub-channels by employing multi-rate signal processing and successive interference cancellation (SIC). Then, this decomposition procedure can be executed recursively to further increase the number of sub-channels. The ISI decreases as the number of sub-channels increases. Meanwhile, since the MRE does not require pre-coding, it does not increase PAPR. The practical implementation of the MRE is not straightforward. An algorithm, which can recursively call each function block in the MRE and execute the entire decomposition processes is required. In this thesis, an algorithm is developed based on the construction pattern of the MRE to enable its realization. An LTE standard-compliant turbo code is simulated to evaluate the practical performance gains of the MRE concept. MATLAB is selected as the simulation environment. According to the simulation results, the channel throughput can be increased by employing the MRE together with LTE turbo code indeed. One time-invariant and one timevarying channel model are employed. Three kinds of MRE with binary modulation are considered. Those are the MRE with two, four and eight subchannels. The increase in throughput is at least 25% and can reach 80% in highly frequency selective scenarios.

Performance of multi-rate equalizer with lte standard turbo code

In the construction and development of modern society, the distribution network as an effective connection of power supply equipment and electricity customers of the power transmission system, during the production and operation of whether the safety and reliability, directly affect the power supply equipment and electricity equipment efficiency and quality. Therefore, how to build a centralized management system of big data is an important research topic put forward by electric power enterprises under the background of the comprehensive development of work, and also an effective means for enterprises to achieve scientific management and improve work efficiency. On the basis of understanding the production and operation status of distribution network, this paper focuses on the structure and application effects of power centralized management system based on Spark, according to the study status of Chinese big data management and power enterprise information integrated management. The final experimental results show that the overall system design can further improve the throughput of the system and provide users with high-quality service functions.

Analysis of centralized control system for safety production and operation of distribution network

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A Novel ICIC Scheme Combining 3D ML-SFR and CoMP

Performance of multi-rate equalizer with lte standard turbo code

Analysis of centralized control system for safety production and operation of distribution network