ICACT20210231 Question.1
Questioner: 201821562016@smail.xtu.edu.cn 2021-02-07 |
ICACT20210231 Answer.1
Answer by Auhor 201821562016@smail.xtu.edu.cn 2021-02-07
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| When the positioning device is moving fast, the mobile signal switching is very frequent. How to make real-time opportunity signal selection in this state? |
Firstly, the software radio equipment with low performance and single channel in this paper is replaced with high performance and multi-channel software radio equipment, which can increase the receiving frequency points of mobile communication signals and reduce the time of signal acquisition and resolution.
Secondly, the mobile communication signal acquisition, analysis and signal selection algorithm is designed by high-performance programming language, and part of the signal processing code is completed on the GPU. |
ICACT20210231 Question.2
Questioner: 201821562016@smail.xtu.edu.cn 2021-02-07 |
ICACT20210231 Answer.2
Answer by Auhor 201821562016@smail.xtu.edu.cn 2021-02-07
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| Is there any room for improvement in the comprehensive evaluation selection algorithm proposed in this paper? What are the improvement measures? |
Although than the current comprehensive evaluation selection algorithm clustering algorithm and sub-optimal algorithm performance is better, but you can see from the measured data, still have a large room to improve performance, and the team part data yet to extract and estimated correctly, such as non line-of-sight, time information, direction and height, the next step should be to explore the parameter selection, and to the opportunity to signal further research opportunities signal positioning parameter extraction, and will be given the opportunity to signal selection of such indicators, easy to improve the positioning accuracy. |
ICACT20210231 Question.3
Questioner: 201821562016@smail.xtu.edu.cn 2021-02-07 |
ICACT20210231 Answer.3
Answer by Auhor 201821562016@smail.xtu.edu.cn 2021-02-07
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| What is the application scenario and value of mobile communication signal selection based on comprehensive evaluation selection algorithm? |
In urban environments complete based on software radio mobile communication signal selection and receive and use the signal after selection can reduce the load operation of the equipments, reducing the time of reception, and can realize navigation and positioning function, based on mobile communication signal after signal selection and its position precision can improve further. |
ICACT20210231 Question.4
Questioner: liuxinwei96@outlook.com 2021-02-10 오후 12:17:06 |
ICACT20210231 Answer.4
Answer by Auhor 201821562016@smail.xtu.edu.cn 2021-02-10 오후 12:17:06
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| How was data obtained for conducting this study？ |
The measured data is obtained by obtaining in advance the base station information transmitting mobile communication signals (2G, 4G) in a certain area of the complex urban environment (university campus), including the longitude and latitude information of the base station and the frequency point of the base station transmitting signals.
The software radio equipment is used for signal acquisition and analysis, and the acquisition method is actual road test.
Then, the comprehensive selection algorithm proposed in this paper is implemented using C ++ programming language to select the best signal.
Use the RSS of the selected signal and the latitude and longitude coordinates of the transmitted signal for positioning. |
ICACT20210231 Question.5
Questioner: kenta-suzuki@atr.jp 2021-02-10 오후 12:21:36 |
ICACT20210231 Answer.5
Answer by Auhor 201821562016@smail.xtu.edu.cn 2021-02-10 오후 12:21:36
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| Thank you for your interesting presentation. I'm Kenta Suzuki from ATR.
When calculate the RSSI in Slide-8, is it not necessary to consider the transmission power control of LTE base station?
|
It should be considered that in the process of measurement data collection, the team has obtained data information of the LTE base station in the test area in advance, which includes the transmitting power of the base station signal. |
ICACT20210231 Question.6
Questioner: kiwi7580@gmail.com 2021-02-10 오후 12:22:57 |
ICACT20210231 Answer.6
Answer by Auhor 201821562016@smail.xtu.edu.cn 2021-02-10 오후 12:22:57
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| How can you get the data for implementating the proposed method? |
The measured data is obtained by obtaining in advance the base station information transmitting mobile communication signals (2G, 4G) in a certain area of the complex urban environment (university campus), including the longitude and latitude information of the base station and the frequency point of the base station transmitting signals.
The software radio equipment is used for signal acquisition and analysis, and the acquisition method is actual road test.
Then, the comprehensive selection algorithm proposed in this paper is implemented using C ++ programming language to select the best signal.
Use the RSS of the selected signal and the latitude and longitude coordinates of the transmitted signal for positioning. |
