Novel Scalable MIMO Channel Sounding Technique and Measurement Accuracy Evaluation With Transceiver Impairments

2012 ◽  
Vol 61 (12) ◽  
pp. 3185-3197 ◽  
Author(s):  
Minseok Kim ◽  
Jun-ichi Takada ◽  
Yohei Konishi
Keyword(s):  
Measurement Accuracy ◽  
Mimo Channel ◽  
Accuracy Evaluation ◽  
Channel Sounding

Cooperative measurement accuracy evaluation method and software

2021 ◽  
Author(s):  
Yu Ren ◽  
Feng Zhang ◽  
Fangfang Liu ◽  
Xiaolei Hu ◽  
Changyu Long ◽  
...  
Keyword(s):  
Measurement Accuracy ◽  
Evaluation Method ◽  
Accuracy Evaluation

scholarly journals JOINT DELAY AND AZIMUTH ESTIMATION OF COHERENT WAVES FOR MILLIMETER-WAVE BAND CHANNEL SOUNDING

2020 ◽  
Vol 10 (1) ◽  
pp. 1-8
Author(s):  
Kentaro Saito ◽  
Ahmad Salaam Mirfananda ◽  
Jun-ichi Takada ◽  
Mitsuki Nakamura ◽  
Wataru Yamada ◽  
...  
Keyword(s):  
Parameter Estimation ◽  
Millimeter Wave ◽  
Mobile Communication ◽  
Channel Modeling ◽  
Cloud Services ◽  
Mimo Channel ◽  
Estimation Accuracy ◽  
Wave Band ◽  
Channel Sounding ◽  
Millimeter Wave Band

The user traffic in the mobile communication area has rapidly increased owing to the widespread of smartphones and various cloud services. To handle the increasing traffic, in the fifth-generation mobile communication system (5G), the millimeter-wave multiple-input and multiple-output (MIMO) communication technology is under development. Because the MIMO transmission performance heavily depends on the radio propagation characteristics, various MIMO channel measurements are needed for the performance evaluation and system design. The accurate and efficient parameter estimation algorithm which estimates the propagation delays and angle of arrivals (AoA) of radio waves is also indispensable for the purpose. In this paper, we extended the joint delay and azimuth estimation (JADE) method based on multiple signal classification (MUSIC) algorithm. In our proposal, the drawback of the MUSIC that the performance degrades for the estimation of coherent waves was solved by applying the smoothing technique in the frequency domain. It also makes the antenna calibration simpler. We implemented the proposed algorithm for the channel sounding system in the 66 GHz band, which is one of the candidate frequency bands for the International Mobile Telecommunications (IMT) system and evaluated the effectiveness through the experiment in an anechoic chamber. The result showed that our proposed method can de-correlate the signal components of coherent waves, and improved the parameter estimation accuracy significantly. The root means square error (RMSE) of the propagation delay estimation was improved from 2.7 ns to 0.9 ns, and the RMSE of the AoA estimation was improved from 20.3 deg. to 7.2 deg. The results are expected to be utilized for the millimeter wave band MIMO channel modeling.

Experimental characteristics and measurement accuracy evaluation of space cryogenic absolute radiometric primary benchmark

2021 ◽  
Vol 29 (1) ◽  
pp. 10-20
Author(s):  
Xiao-long YI ◽  
◽  
Wei FANG ◽  
Yan-dong LIN ◽  
Yu-peng WANG ◽  
...  
Keyword(s):  
Measurement Accuracy ◽  
Accuracy Evaluation

MU-MIMO channel emulator with automatic channel sounding feedback for IEEE 802.11ac

2016 ◽  
Author(s):  
Tran Thi Thao Nguyen ◽  
Leonardo Lanante ◽  
Yuhei Nagao ◽  
Masayuki Kurosaki ◽  
Hiroshi Ochi
Keyword(s):  
Mimo Channel ◽  
Channel Sounding ◽  
Channel Emulator ◽  
Ieee 802.11Ac

Multi-User MIMO Channel Emulator with Automatic Channel Sounding Feedback

2016 ◽  
Vol E99.A (11) ◽  
pp. 1918-1927 ◽  
Author(s):  
Tran Thi Thao NGUYEN ◽  
Leonardo LANANTE ◽  
Yuhei NAGAO ◽  
Hiroshi OCHI
Keyword(s):  
Mimo Channel ◽  
Channel Sounding ◽  
Channel Emulator
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