Achievement of Low Power, High Speed, and Long Distance with Complex TFI Signal for AF Relay Transmissions
Project/Area Number |
15K18065
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Communication/Network engineering
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Research Institution | Yamaguchi University |
Principal Investigator |
IDA Yuta 山口大学, 大学院創成科学研究科, 助教 (20711229)
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Project Period (FY) |
2015-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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Keywords | 直交周波数分割多重 / 4時間窓TFI / 通信路推定 / リレー・協調通信 / 無線通信方式 / OFDM / リレー伝送 / チャネル推定 / AF / TFI |
Outline of Final Research Achievements |
In this research, we have proposed the channel estimation (CE) for amplify-and-forward (AF) relay transmissions. Before now, time frequency interferometry (TFI) has been proposed and achieves the CE with a small number of pilot signals by averaging the two time windows. Therefore, in the case of the time windows length for (maximum delay)×(number of hops), CE for AF relay transmission is achieved. However, TFI degrades the accuracy of CE in multi-hop environments. Therefore, we propose the TFI with complex signal and achieves the averaging for the four time windows. And then, the proposed TFI improves the accuracy of CE in multi-hop environments.
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Report
(4 results)
Research Products
(14 results)
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[Presentation] Performance Evaluation for AF Relay TFI-OFDM Systems2015
Author(s)
Yuta Ida, Kota Imafuku, Takahiro Matsumoto, Shinya Matsufuji
Organizer
2015 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2015)
Place of Presentation
Nusa Dua - Bali, Indonesia
Year and Date
2015-11-09
Related Report
Int'l Joint Research
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