Highly dynamic or semi-static: Resource allocation for high-speed mobile terminals in 4G

2013 ◽  
Author(s):  
Lusheng Wang ◽  
Fuxing Wang ◽  
Linghan Du
Keyword(s):  
Resource Allocation ◽  
High Speed ◽  
Mobile Terminals ◽  
Static Resource

scholarly journals Fog Computing-Assisted Energy-Efficient Resource Allocation for High-Mobility MIMO-OFDMA Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Lingyun Lu ◽  
Tian Wang ◽  
Wei Ni ◽  
Kai Li ◽  
Bo Gao
Keyword(s):  
Resource Allocation ◽  
Energy Efficient ◽  
High Speed ◽  
Optimization Problem ◽  
Fog Computing ◽  
High Mobility ◽  
High Speed Train ◽  
Efficient Resource ◽  
Energy Efficient Resource Allocation ◽  
System Configurations

This paper presents a suboptimal approach for resource allocation of massive MIMO-OFDMA systems for high-speed train (HST) applications. An optimization problem is formulated to alleviate the severe Doppler effect and maximize the energy efficiency (EE) of the system. We propose to decouple the problem between the allocations of antennas, subcarriers, and transmit powers and solve the problem by carrying out the allocations separately and iteratively in an alternating manner. Fast convergence can be achieved for the proposed approach within only several iterations. Simulation results show that the proposed algorithm is superior to existing techniques in terms of system EE and throughput in different system configurations of HST applications.

Resource Allocation for Multiple Base Stations OFDM Systems under High-Speed Scenarios

2021 ◽  
Author(s):  
Shuang Lil ◽  
Zhicheng Dong ◽  
Qing Wang ◽  
Weixi Zhou ◽  
Wei Xiao
Keyword(s):  
Resource Allocation ◽  
High Speed ◽  
Base Stations ◽  
Ofdm Systems

Train-mounted Broadband Monopole Antenna for 5G Communication

2021 ◽  
Vol 36 (7) ◽  
pp. 879-884
Author(s):  
Hao Li ◽  
Lu Xu ◽  
Feng Qian ◽  
Yong Zhou
Keyword(s):  
Mobile Communication ◽  
Communication Systems ◽  
High Speed ◽  
High Gain ◽  
Monopole Antenna ◽  
Mobile Terminals ◽  
High Speed Railway ◽  
Public Transport System ◽  
Fifth Generation ◽  
5G Mobile Communication

As a convenient and efficient public transport system, high speed railway (HSR) was rapidly deployed in China. Since the fifth generation (5G) mobile communication system is commercially applied, it is necessary for mobile terminals antennas to cover multiple operating bands to be compatible with various communication systems. Here a HSR-mounted broadband and high-gain monopole antenna is proposed. By using the meander technology and introducing the tapered structure, the proposed antenna operates over a bandwidth of 694-960 MHz and 1350-5975 MHz (VSWR<1.8), which covers both 2G-5G mobile communication and WiFi frequency bands. The dimensions of the proposed antenna are 400 mm × 330 mm × 78 mm. The measured average gain is 6.11 dBi over the entire bandwidth.

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