Open AccessResearch and Implementation on OFDM Technology for Machine Communication
Author(s) -
Zhihao Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1486/4/042005
Subject(s) - orthogonal frequency division multiplexing , computer science , multiplexing , context (archaeology) , transmission (telecommunications) , frame (networking) , the internet , reduction (mathematics) , real time computing , electronic engineering , computer network , engineering , telecommunications , channel (broadcasting) , paleontology , geometry , mathematics , world wide web , biology
Machine communication provides the means of information interaction for Internet of Everything (IoE) and unattended operation, promoting the development on the related areas such as Internet of Things, automatic drive, robot, and unmanned aerial vehicle (UAV) which are on this basis. In machine communication on a large scale, mass user multiplexing will give rise to high peak-to-average ratio (PAR) of OFDM and redundant control information will lower the utilization efficiency of OFDM’s effective frequency. In the light of the problems above, OFDM optimization technique used in machine communication is put forward in this thesis. Under the circumstances of more user access currently, more complex application context, high PAR and low utilization efficiency, the thesis proposes computer emulating by OFDM and optimization of access mode. Additionally, OFDM optimization technique, applying partial transmit sequence and carrier to noise ratio (CTNR) to realize the redundant information control of short frame carrier, optimize PAR and enhance the transmission efficiency. Finally, simulation experiment and hardware design verify the feasibility of OFDM optimization technique in machine communication.