scholarly journals DEVELOPMENT OF DIRECTIONALCHANNEL SOUNDER USING USRPAND GNU RADIO

2017 ◽  
Vol 7 (1) ◽  
pp. 69-79
Author(s):  
Tianyang Min ◽  
Kentaro Saito ◽  
Jun-ichi Takada
Keyword(s):  
Measurement System ◽  
Low Cost ◽  
Software Radio ◽  
Mimo Channel ◽  
Channel Measurements ◽  
Gnu Radio ◽  
Transmission Performance ◽  
Propagation Channel ◽  
Channel Sounder ◽  
Mimo Transmission

MIMO channel sounding is essential for evaluating the MIMO transmission performance in real propagation environments. In this paper, we have developed a versatile channel sounder by using the GNU Radio and Universal Software Radio Peripheral (USRP) platform and the virtual antenna array method. The developed channel sounder is low cost and can be utilized flexibly for measurements in the UHF band. The performance of the developed channel sounder was validated through a T-junction cable connected test and an indoor channel measurement. The result showed that the performance quite agreed with the measurement of a VNA-based measurement system. The developed channel sounder is expected to be utilized for various kinds of propagation channel measurements.

scholarly journals Device-Free Indoor Location Estimation System Using Commodity Wireless LANs

2021 ◽  
Author(s):  
Yuan Zhou ◽  
Minseok Kim ◽  
Hideaki Momose ◽  
Satoru Yasukawa
Keyword(s):  
Low Cost ◽  
Wireless Lans ◽  
Estimation Method ◽  
Location Estimation ◽  
Mimo Channel ◽  
Indoor Location ◽  
Channel Sounder ◽  
Position Detection ◽  
Estimation System ◽  
Device Free

In recent years, since the propagation channel characteristics have been effectively used for applications such as motion sensing, position detection, etc. A great deal of attention is attracted to channel sounding methods easy to utilize using low-cost devices. This paper presents a device-free indoor location estimation method using spatio-temporal features of radio propagation channels using the 2.4-GHz band 3-by-3 MIMO channel sounder developed using commodity wireless LANs. The measurement results demonstrated a reasonable performance of the proposed method with small number of antennas.

Versatile Radio Channel Sounder for Double Directional and Multi-link MIMO Channel Measurements at 11 GHz

2014 ◽  
Vol E97.C (10) ◽  
pp. 994-1004 ◽  
Author(s):  
Yohei KONISHI ◽  
Yuyuan CHANG ◽  
Minseok KIM ◽  
Jun-ichi TAKADA
Keyword(s):  
Radio Channel ◽  
Mimo Channel ◽  
Channel Measurements ◽  
Channel Sounder

scholarly journals Industrial wireless channel measurements in a 2.4 GHz ISM radio band using a low-cost SDR-based channel sounder

2020 ◽  
Vol 9 (1) ◽  
pp. E1-1-E1-25
Author(s):  
Grzegorz Korzeniewski ◽  
◽  
Roberto Carrasco Álvarez ◽  
Keyword(s):  
Software Defined Radio ◽  
Communication Systems ◽  
Multipath Propagation ◽  
Low Cost ◽  
Wireless Channel ◽  
Channel Measurements ◽  
Channel Sounding ◽  
Channel Sounder ◽  
Radio Band ◽  
Mathematical Foundations

Industrial wireless channel is a challenge for the design of communication systems, due to non-Line-of-Sight transmission, caused by the presence of many highly reflective obstacles, and machines in operation, which are a source of the increased noise level. The main effect, which must be analyzed, is multipath propagation. In this article, a low-cost sounding system is proposed, based on Software Defined Radio (SDR) equipment, with the intention of making sounding devices more accessible to a larger group of researchers. Likewise, the mathematical foundations and the software/hardware implementation of the wireless channel sounding system are presented, and the solutions to mitigate the synchronization issues and SDR limitations are also introduced. The performance of the proposed sounder is validated through a measurement campaign in an industrial workshop, considering the 2.4 GHz Industrial, Scientific, Medical (ISM) band. Channel sounding measurements corroborate the accuracy of the results, which converge with the channel mathematical models proposed for several industrial environments and reported in the state-of-the-art literature. In this sense, the proposed channel sounder can be used to investigate the wireless propagation environments.

Parallel Channel Sounder for MIMO Channel Measurements

2018 ◽  
Vol 25 (5) ◽  
pp. 16-22 ◽  
Author(s):  
Yang Yang ◽  
Yunsong Gui ◽  
Haowen Wang ◽  
Wuxiong Zhang ◽  
Yang Li ◽  
...  
Keyword(s):  
Mimo Channel ◽  
Channel Measurements ◽  
Parallel Channel ◽  
Channel Sounder

scholarly journals Propagation Channel Measurements in the mm- and Sub-mm Wave Range for Different Indoor Communication Scenarios

2021 ◽  
Vol 42 (4) ◽  
pp. 357-370
Author(s):  
M. A. Salhi ◽  
T. Kleine-Ostmann ◽  
T. Schrader
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Wireless Communication Systems ◽  
Electromagnetic Spectrum ◽  
Channel Measurements ◽  
Frequency Range ◽  
Propagation Channel ◽  
Data Rates ◽  
Indoor Wireless ◽  
Wave Range

AbstractIncreasing data rates in wireless communications are accompanied with the need for new unoccupied and unregulated bandwidth in the electromagnetic spectrum. Higher carrier frequencies in the lower THz frequency range might offer the solution for future indoor wireless communication systems with data rates of 100 Gbit/s and beyond that cannot be located elsewhere. In this review, we discuss propagation channel measurements in an extremely broad frequency range from 50 to 325 GHz in selected indoor communication scenarios including kiosk downloading, office room communication, living rooms, and typical industrial environments.

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