Research on Standalone BeiDou Radio Frequency Minimum Performance Test for Mobile Communication Terminals

2019 ◽  
Author(s):  
Zhang Qinjuan ◽  
Dai Xun ◽  
Chen Xiaochen
Keyword(s):  
Radio Frequency ◽  
Mobile Communication ◽  
Performance Test ◽  
Minimum Performance

scholarly journals Temporal variation of exposure from radio-frequency electromagnetic fields around mobile communication base stations

2021 ◽  
Vol 12 ◽  
pp. e00724
Author(s):  
Abel B. Olorunsola ◽  
Omolayo M. Ikumapayi ◽  
Bankole I. Oladapo ◽  
Adeleke O. Alimi ◽  
Adeyinka O.M. Adeoye
Keyword(s):  
Radio Frequency ◽  
Temporal Variation ◽  
Electromagnetic Fields ◽  
Mobile Communication ◽  
Base Stations

scholarly journals An Internet of Things System Based on Device-to-Device Communication Technology and Radio-Frequency Identification

2018 ◽  
Vol 14 (10) ◽  
pp. 210
Author(s):  
Cheng Huang ◽  
Yongbo Lv
Keyword(s):  
Internet Of Things ◽  
Radio Frequency ◽  
Communication Technology ◽  
Mobile Communication ◽  
Radio Frequency Identification ◽  
Device To Device ◽  
Research Findings ◽  
Frequency Identification ◽  
Application Potential ◽  
Short Time

<span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: DE; mso-ansi-language: EN-US; mso-bidi-language: AR-SA;">This paper aims to build a mobile communication system suitable for different application scenarios of the Internet of Things (IoT). For this purpose, an IoT system was developed based on device-to-device (D2D) communication technology and radio-frequency identification (RFID). The D2D-RFID-based IoT system combines the merits of mobile communication (e.g. 4G) and the RFID. The analysis shows that the proposed system boasts good mobility, stable transmission, short time delay, fixed IP, and no need of a central server. The research findings have a great application potential in different IoT scenarios.</span>

Design of Radio Frequency Link in Automatic Test System for Multimode Mobile Communication Base Station

2015 ◽  
Vol 25 (14) ◽  
pp. 1540032
Author(s):  
Weipeng Zhang
Keyword(s):  
Radio Frequency ◽  
Mobile Communication ◽  
Test System ◽  
Base Station ◽  
Base Stations ◽  
Automatic Test ◽  
Automatic Test System ◽  
Link Functions ◽  
Noise Filter ◽  
General Module

A modularized design for the radio frequency (RF) link in automatic test system of multimode mobile communication base station is presented, considering also the characteristics of wireless communication indices and composition of signals of base stations. The test link is divided into general module, time division duplex (TDD) module, module of spurious noise filter, module of downlink intermodulation, module of uplink intermodulation and uplink block module. The composition of modules and link functions are defined, and the interfaces of the general module and the module of spurious noise filter are described. Finally, the estimated gain budget of the test link is presented. It is verified by experiments that the system is reliable and the test efficiency is improved.

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