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http://dx.doi.org/10.7840/kics.2015.40.9.1699

Uplink Frequency Offset Compensation Scheme for High-Speed Moving Terminals  

Choi, Sung-woo (Electronics and Telecommunications Research Institute, Chungnam National University Department of Information and communication)
Kim, Ilgyu (Electronics and Telecommunications Research Institute)
Ahn, Jae Min (Chungnam National University Department of Information and communication)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.40, no.9, 2015 , pp. 1699-1709 More about this Journal
Abstract
Moving terminals like high-speed-train undergo high Doppler frequency shift, and this leads to carrier frequency offsets that have to be compensated to avoid degradation of communication performance. In multiple access mechanism like OFDMA, base-stations need complex hardware to compensate the uplink frequency offset. In this paper, we propose a method, which can reduce burden of the base-station and makes frequency offset estimation and compensation simple. This method contains transmitting new synchronization signal, estimating frequency offsets in base-station, transmitting feedback information to terminal, and compensating the offset in uplink transmission. Simulation results show the proposed method operates well in high Doppler frequency shift conditions of 500 km/h which is the requirements of 5G mobile communication.
Keywords
frequency offset compensation; Doppler frequency; millimeter wave communication;
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Times Cited By KSCI : 3  (Citation Analysis)
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